EP1178566A1 - Slot antenna for artillery ammunition - Google Patents

Slot antenna for artillery ammunition Download PDF

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Publication number
EP1178566A1
EP1178566A1 EP01118342A EP01118342A EP1178566A1 EP 1178566 A1 EP1178566 A1 EP 1178566A1 EP 01118342 A EP01118342 A EP 01118342A EP 01118342 A EP01118342 A EP 01118342A EP 1178566 A1 EP1178566 A1 EP 1178566A1
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EP
European Patent Office
Prior art keywords
antenna
slot
disc
annular space
antenna according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP01118342A
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German (de)
French (fr)
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EP1178566B1 (en
Inventor
Martin Hertel
Volker Koch
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Diehl BGT Defence GmbH and Co KG
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Diehl Munitionssysteme GmbH and Co KG
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Publication date
Priority claimed from DE20022480U external-priority patent/DE20022480U1/en
Application filed by Diehl Munitionssysteme GmbH and Co KG filed Critical Diehl Munitionssysteme GmbH and Co KG
Publication of EP1178566A1 publication Critical patent/EP1178566A1/en
Application granted granted Critical
Publication of EP1178566B1 publication Critical patent/EP1178566B1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/286—Adaptation for use in or on aircraft, missiles, satellites, or balloons substantially flush mounted with the skin of the craft
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F42—AMMUNITION; BLASTING
    • F42B—EXPLOSIVE CHARGES, e.g. FOR BLASTING, FIREWORKS, AMMUNITION
    • F42B30/00—Projectiles or missiles, not otherwise provided for, characterised by the ammunition class or type, e.g. by the launching apparatus or weapon used
    • F42B30/006—Mounting of sensors, antennas or target trackers on projectiles
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q1/00—Details of, or arrangements associated with, antennas
    • H01Q1/27—Adaptation for use in or on movable bodies
    • H01Q1/28—Adaptation for use in or on aircraft, missiles, satellites, or balloons
    • H01Q1/281—Nose antennas
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01Q—ANTENNAS, i.e. RADIO AERIALS
    • H01Q13/00—Waveguide horns or mouths; Slot antennas; Leaky-waveguide antennas; Equivalent structures causing radiation along the transmission path of a guided wave
    • H01Q13/10—Resonant slot antennas
    • H01Q13/12—Longitudinally slotted cylinder antennas; Equivalent structures

Definitions

  • the invention relates to an antenna according to the preamble of claim 1.
  • Such an antenna is for receiving satellite navigation information from US 6,098,547 A in the form of a transverse to the system axis in the front Field of an artillery detonator-held dielectric disc known coated on both sides with metal and for inductive adjustment of their resonance frequency with axially parallel, electrically conductive entrances between the two sides Metallizations is equipped.
  • the present invention lies in the knowledge of the circumstances described above based on the technical problem, one with regard to its mechanical and electrical properties for simple, even subsequent application High-frequency antenna suitable for rolling artillery ammunition in particular for satellite communications including navigation and telemetry to create in the L and S bands.
  • the slot antenna again integrated into the ammunition body ogive with its removable detonator and so can be easily applied to the ammunition afterwards.
  • the axial position of the antenna depends on the frequency-dependent Diameter and is therefore further for the reception of navigation satellites to the basis, for higher-frequency telemetry communication, on the other hand, to Tip of the detonator shifted towards.
  • the outer opening of the slot is radial directly behind a slot in the circumferential cone of the igniter.
  • An axially symmetrical toroidal antenna characteristic then extends along this, so that despite the rotation around the longitudinal axis of the ammunition always a segment of practically constant sensitivity across the half space the horizon without it being more complex in terms of circuitry and possibly electrically disruptive switching processes as in the case of the tracked Antenna characteristic according to EP 0 840 393 A2 is required.
  • the antenna is again designed as a disk-shaped but now extremely acceleration-resistant Sandwich structure made of metal turned parts with one to the taper axis concentric resonator annulus, which is a cylindrical reflector wall opposite with the radially circumferential emitter slot in the conical surface of the detonator opens.
  • the annulus is transverse in its center or symmetry plane divided to the longitudinal axis, around a ring disk made of electrical as bad as possible to be able to insert conductive material of increased dielectric constant independent of low dielectric losses and high tracking resistance characterized by frequency and temperature, like the fluorine-containing polymer PTFE (polytetrafluoroethylene) sold under trade names such as Teflon, Fluon or Hostaflon is on the market.
  • PTFE polytetrafluoroethylene
  • Ring disc By choosing the material and dimensions Ring disc can be specified according to the geometric dimensions of the Subsequent annulus an electrical resonance fine tuning without further ado on e.g. make a certain satellite frequency.
  • an electrical resonance fine tuning without further ado on e.g. make a certain satellite frequency.
  • the circumferential circumferential one Antenna slot filled dielectric namely through an outside on the Washer flange-like circumferential, radial to the surface of the igniter cone extending collar.
  • the antenna is connected via a two-wire, at least two axially located places of the inner edges of the slot connected Antenna cable.
  • the antenna is connected via a two-wire, at least two axially located places of the inner edges of the slot connected Antenna cable.
  • the invention provides an easily tunable, mechanically extreme loadable slot antenna for the detonator of artillery ammunition a sandwich structure, one between an upper and a lower one dimensionally stable profiled metallic cover washer axially enclosed, axially divided resonator annulus is equipped with a dielectric washer, which with a circumferential collar of the central cylindrical reflector wall radially opposite through an axial slot between the two hollow cylindrical Outer walls of the annulus through to the outer surface of the circumferentially slotted detonator jacket extends.
  • One of the two Cover disks are the inner edge of the antenna slot opening into the annular space by a tire that can be inserted into the forehead of the outer wall defined, at the circumferentially offset connection points through the dielectric washer and the axially opposite cover washer are contacted through to a circuit carrier disc, whereupon they by means of of a matching network merged in a single phase onto an antenna line are, whose second phase is directly connected to the adjacent cover plate is.
  • the head detonator 11 shown in FIG. 1 is intended for use by means of a not shown thread in front of the conically tapered front of a spin-stabilized or aerodynamically stabilized artillery ammunition screwed shut become. It is radially all around with a slightly spherical cone wall 12 penetrating antenna slot 13 designed with dielectric material is filled with the axially on both sides adjoining outer surface of the Wall 12 is flush.
  • the front part 15 and the rear part 16 are underneath Coaxial intermediate layer of the mechanically extremely heavy-duty antenna 17 by means of the antenna 17, which runs parallel to the igniter longitudinal axis 18 extending clamping screws 19 connected to each other.
  • a flexible one Antenna line 20 with coaxial cross section leads to the rear part of the igniter 16 located antenna amplifier (not shown in the drawing).
  • the receiver or transmitter signal processing circuit that like their power supply unit 22 (for example in the form of an activatable battery or an inflow generator) is installed in the area of the base of the detonator rear part 16.
  • FIG. 3 shows that and how the disc-shaped Antenna 17 is made of torsionally rigid components sandwiched. It essentially consists of two mechanically stiff metal Cover disks, namely a plate-like towards the ignition front part 15 flat cup-shaped, rotationally symmetrical profiled metal top plate 23 and one oriented in the opposite direction to the detonator rear part 16, likewise plate-like flat pot-shaped - but in this example case for handling reasons for connecting the antenna cable in two parts - rotationally symmetrical profiled metal washer 24. Each of these two washers 23-24 has a central stiffening in the form of a pot bottom 26 between the Walls 24 and 31 coaxially outstanding base 25.
  • this annular space 28 is thus axially divided, it can be placed in it before it is placed insert an annular disk 29 made of dielectric material into the upper disk 23.
  • The has an externally radially circumferential, flange-like projecting collar 30 from compared to the annular disc 29 of significantly lower axial strength.
  • the collar 30 extends radially with respect to the longitudinal axis 18 through the slot 13 ', which due to the axial height of the base 25 between each other facing end faces of the walls 27 enclosing the annular space 28 on the outside and 31 remains.
  • the collar 30 preferably projects even radially through the Slot 13 'into the slot 13 in the wall 12 between the front part of the igniter 15 and detonator rear part 16 until it is flush with the immediately adjacent outer surface. This makes assembly easier axial joining of the front and rear of the igniter 15-16 via the antenna 17 and avoids eddies in the area of fluid dynamics particularly sensitive ogive of the ammunition body.
  • the antenna 17 is covered with a dielectric disk 32.
  • This serves as a wiring support for a link network between four to each other orthogonal connections to the inside, towards the annular space 28 towards the end of the Antenna slot 13 '.
  • an imaginary on the disc 32 at the corners Squares four coaxial conductor pieces 33 parallel to the system longitudinal axis 18 anchored.
  • the inner conductors reach through the washer 29 to finally to end a narrow electrically conductive tire 35.
  • the outer conductors are with the top plate 23 and with the underside of the circuit carrier plate 32 conductive connected.

Abstract

A slot antenna (17) has a split resonating annulus (28) with a dielectric ring wheel (29). An antenna slot fits radially opposite a centered cylindrical reflector wall between the annulus' hollow cylindrical sides (31). The ring wheel protrudes into a slot with a collar (30) running round like a flange and locking flush with the outer surface of a fuse wall with a slot on its periphery.

Description

Die Erfindung betrifft eine Antenne gemäß dem Oberbegriff des Anspruches 1.The invention relates to an antenna according to the preamble of claim 1.

Eine derartige Antenne ist zum Empfang von Satelliten-Navigationsinformationen aus der US 6,098,547 A in der Bauform einer quer zur Systemachse im vorderen Bereich eines Artilleriezünders gehalterten dielektrischen Scheibe bekannt, die beiderseits metallisch beschichtet und zum induktiven Abgleich ihrer Resonanzfrequenz mit achsparallelen elektrisch leitenden Durchstiegen zwischen den beiderseitigen Metallisierungen ausgestattet ist. Die dadurch gegebenen Abgleichmöglichkeiten sind aber recht beschränkt und für die Belange der Praxis schlecht ausführbar. Vor allem aber weist dieser Antennenaufbau weder in sich noch hinsichtlich der apparativen Integrationsmöglichkeiten die wünschenswerte mechanische Stabilität gegen die beim Abschuß einer drallstabilisierten Munition auftretenden Beschleunigungskräfte auf.Such an antenna is for receiving satellite navigation information from US 6,098,547 A in the form of a transverse to the system axis in the front Field of an artillery detonator-held dielectric disc known coated on both sides with metal and for inductive adjustment of their resonance frequency with axially parallel, electrically conductive entrances between the two sides Metallizations is equipped. The matching options that this provides but are quite limited and bad for practical needs executable. But above all, this antenna structure shows neither in itself nor in terms of the desirable mechanical integration options Stability against those occurring when a spin-stabilized ammunition is fired Acceleration forces.

Das gilt entsprechend für den aus der US 4,305,078 A bekannten axialen Stapel aus durch Metallisierungen voneinander getrennten dielektrischen Scheiben zum Ausbilden einer Mehrfrequenz-Schlitzantenne, die vom Innenleiter eines koaxialen Antennenkabels bis zum Anschluß an die oberste Metallisierung axial durchquert ist, mit Anschluß des Außenleiters an die gegenüberliegende Außenmetallisierung des Schichtenaufbaus.This applies correspondingly to the axial stack known from US 4,305,078 A. of dielectric disks separated from one another by metallizations for Form a multi-frequency slot antenna from the inner conductor of a coaxial Antenna cable traversed axially up to the connection to the top metallization is, with connection of the outer conductor to the opposite outer metallization of the layer structure.

Aus der WO 99/02936 A2 ist eine Fallbombe bekannt, die im Zentrum ihres Hecks mit einer sandwich- oder patchartigen Satellitenantenne ausgestattet ist. Während der Fallbewegung ins Zielgebiet hält deren kugelförmige Antennencharakteristik Kontakt zu über dem Horizont stehenden Navigationssatelliten, um durch Endphasensteuerung die Treffergenauigkeit zu erhöhen.From WO 99/02936 A2 a drop bomb is known, which is in the center of its Hecks is equipped with a sandwich or patch-like satellite antenna. During the falling movement into the target area, their spherical antenna characteristics hold Contact to navigation satellites above the horizon to to increase the accuracy of hits by controlling the final phase.

Eine solche Antennenkonfiguration ist für Artilleriemunition jedoch unzweckmäßig. Denn die von der Heckantenne her etwa symmetrisch zur Projektil-Längsachse nach rückwärts orientierte Antennen-Richtcharakteristik wäre während des größten Teils der Flugbewegung einer Artilleriemunition längs einer mehr oder weniger gestreckten ballistischen Bahn nur auf den Horizont gerichtet, anfangs sogar darunter und nach dem Apogäum nur geringfügig darüber. Dadurch wäre die Wahrscheinlichkeit gering, eine für rasche und präzise Bahnpunktbestimmung zur Bahnkorrektur hinreichende Anzahl von Navigationssatelliten gleichzeitig hinreichend störungsfrei erfassen zu können. Auch der Einbau einer solchen Patch-Antenne in die Spitze des Projektils wäre unbefriedigend, weil deren dann koaxial nach voraus orientierte Kugelcharakteristik nur in der allerersten Phase der Flugbahn deutlich über den Horizont gerichtet wäre, was aber notwendig ist, um zu mehreren Satelliten in günstiger Konstellation Kontakt aufzunehmen. Nach dem Apogäumsdurchgang ist die Spitze eines Munitionsartikels dann wieder zum Untergrund hin gerichtet, so daß nun allenfalls die sehr störbehafteten Bodenreflexe von Satellitensignalen aufgenommen werden könnten.However, such an antenna configuration is not practical for artillery ammunition. Because from the rear antenna about symmetrical to the longitudinal axis of the projectile backward oriented antenna pattern would be during most of the movement of an artillery ammunition along one more or less stretched ballistic trajectory just aimed at the horizon initially even below and only slightly above after apogee. Thereby the probability would be low, one for quick and precise path point determination sufficient number of navigation satellites to correct the orbit to be able to record at the same time with sufficient interference. Even the installation of a such a patch antenna in the tip of the projectile would be unsatisfactory because of that then coaxial characteristic oriented in advance only in the very first Phase of the trajectory would be clearly above the horizon, but this is necessary is to contact several satellites in a favorable constellation. After the apogee passage is the tip of an ammunition item again directed towards the subsoil, so that now at most the very troubled Ground reflections from satellite signals could be recorded.

Darüber hinaus besteht speziell bei Artilleriemunition angesichts der in der Praxis nicht ideal achssymmetrisch kugelförmigen Antennencharakteristiken das Problem der Rotation zur Spinstabilisierung von ballistisch verbrachten oder auch nur zur Kompensation von Abgangsstörungen bei triebwerksbeschleunigten und aerodynamisch stabilisierten Projektilen. Denn die im Querschnitt nicht kreisförmige Antennencharakteristik hat zur Folge, daß die Signale rotationsabhängig moduliert werden, was die Auswertung der übermittelten Informationen stark beeinträchtigt und deshalb erheblichen signalverarbeitungstechnischen Mehraufwand bedingt.In addition, there is especially artillery ammunition given the in practice not ideal axisymmetric spherical antenna characteristics the problem the rotation to stabilize the spin of ballistic spent or just to compensate for output problems in engine-accelerated and aerodynamic stabilized projectiles. Because the cross section is not circular The result of the antenna characteristic is that the signals are modulated in a rotation-dependent manner become, which greatly affects the evaluation of the transmitted information and therefore requires considerable additional signal processing technology.

Solche rotationsbedingten Probleme treten erst recht auf, wenn gemäß der DE 44 01 315 A1 eine ungelenkte Rakete zur GPS-gestützten Flugbahnkorrektur durch bedarfsweise raumrichtungsabhängig auszulösenden Querschub mit mehreren Triebwerken ausgestattet wird, die mit Spannbändern auf die Außenmantelfläche des Raketenkörpers geschnallt sind, wobei wenigstens eines dieser Triebwerke zusätzlich mit einer dort nicht näher beschriebenen GPS-Antenne ausgestattet ist. Eine störungsfreie Rundumcharakteristik ist von einer solchen asymmetrischen Spannband-Antennenkonfiguration nicht zu erwarten.Such rotation-related problems only occur when according to DE 44 01 315 A1 an unguided rocket for GPS-based flight path correction if necessary, transverse shear to be triggered with several depending on the direction of the room Engines is equipped with straps on the outer surface of the missile body are strapped, at least one of these engines is also equipped with a GPS antenna not described there. A trouble-free all-round characteristic is of such an asymmetrical type Strap antenna configuration not expected.

Vergleichbare Probleme bestehen, wenn mittels der Antenne nicht Informationen von Satelliten (wie Positionsinformationen von Navigationssatelliten) aufgenommen und an Bord der Munition verarbeitet werden sollen, sondern wenn Informationen aus der Munition mittels Telemetriesendern an erdfeste oder orbitale Empfangs- oder Relaisstationen zu übermitteln sind.Comparable problems exist if the antenna does not provide information from satellites (such as position information from navigation satellites) and to be processed on board the ammunition, but when information from the ammunition by means of telemetry transmitters to earth-fixed or orbital reception or relay stations are to be transmitted.

In Erkenntnis der vorstehend geschilderten Gegebenheiten liegt vorliegender Erfindung die technische Problemstellung zugrunde, eine hinsichtlich ihrer mechanischen und elektrischen Eigenschaften zur einfachen, auch nachträglichen Applikation an rollende Artilleriemunition geeignete Höchstfrequenz-Antenne insbesondere für Satellitenkommunikation einschließlich Navigation und Telemetrie im L- und S-Band zu schaffen.The present invention lies in the knowledge of the circumstances described above based on the technical problem, one with regard to its mechanical and electrical properties for simple, even subsequent application High-frequency antenna suitable for rolling artillery ammunition in particular for satellite communications including navigation and telemetry to create in the L and S bands.

Diese Aufgabe ist erfindungsgemäß durch die im Hauptanspruch angegebene Kombination der wesentlichen Merkmale realisiert. Danach ist die Schlitzantenne wieder in die Munitionskörper-Ogive mit ihrem abschraubbaren Kopfzünder integriert und so problemlos auch erst nachträglich auf den Munitionskörper applizierbar. Die axiale Lage der Antenne richtet sich nach dem frequenzabhängigen Druchmesser und ist deshalb für den Empfang von Navigationssatelliten weiter zur Basis, für die höherfrequente Telemetriekommunikation dagegen weiter zur Spitze des Zünders hin verschoben. Die äußere Öffnung des Schlitzes liegt radial direkt hinter einem in der Kegelmantelfläche des Zünders umlaufenden Schlitz. Längs dessen erstreckt sich dann eine axialsymmetrisch ringwulstförmige Antennencharakteristik, so daß trotz der Rotation um die Längsachse der Munition stets ein Segment praktisch konstant bleibender Empfindlichkeit den Halbraum über dem Horizont erfaßt, ohne daß es dafür schaltungstechnisch aufwendiger und womöglich elektrisch störender Umschaltvorgänge wie im Falle der nachgeführten Antennencharakteristik gemäß EP 0 840 393 A2 bedarf. This object is achieved by the one specified in the main claim Combination of the essential features realized. After that is the slot antenna again integrated into the ammunition body ogive with its removable detonator and so can be easily applied to the ammunition afterwards. The axial position of the antenna depends on the frequency-dependent Diameter and is therefore further for the reception of navigation satellites to the basis, for higher-frequency telemetry communication, on the other hand, to Tip of the detonator shifted towards. The outer opening of the slot is radial directly behind a slot in the circumferential cone of the igniter. An axially symmetrical toroidal antenna characteristic then extends along this, so that despite the rotation around the longitudinal axis of the ammunition always a segment of practically constant sensitivity across the half space the horizon without it being more complex in terms of circuitry and possibly electrically disruptive switching processes as in the case of the tracked Antenna characteristic according to EP 0 840 393 A2 is required.

Gestaltet ist die Antenne wieder als scheibenförmiger aber nun extrem beschleunigungsfester Sandwich-Aufbau aus Metalldrehteilen mit einem zur Kegelachse konzentrischen Resonator-Ringraum, der sich einer zylindrischen Reflektorwand gegenüber mit dem radial umlaufenden Strahler-Schlitz in die Kegelmantelfläche des Zünders öffnet. Der Ringraum ist in seiner Mitten- oder Symmetrieebene quer zur Längsachse geteilt, um hier eine Ringscheibe aus elektrisch möglichst schlecht leitendem Material erhöhter Dielektrizitätskonstante einlegen zu können, das sich durch niedrige dielektrische Verluste und hohe Kriechstromfestigkeit unabhängig von Frequenz und Temperatur auszeichnet, wie das fluorhaltige Polymerisat PTFE (Polytetrafluorethylen), das unter Handelsnamen wie Teflon, Fluon oder Hostaflon auf dem Markt ist. Mittels Materialwahl und Abmessung dieser Ringscheibe läßt sich nach der Vorgabe der geometrischen Abmessungen des Ringraumes nachträglich ohne weiteres noch eine elektrische Resonanzfeinabstimmung auf z.B. eine bestimmte Satellitenfrequenz vornehmen. Vorzugsweise ist außer dem eigentlichen Ringraum auch der davon radial ausgehend umlaufende Antennen-Schlitz dielektrisch aufgefüllt, nämlich durch einen außen an der Ringscheibe flanschartig umlaufenden, radial bis zur Kegelmantelfläche des Zünders sich erstreckenden Kragen.The antenna is again designed as a disk-shaped but now extremely acceleration-resistant Sandwich structure made of metal turned parts with one to the taper axis concentric resonator annulus, which is a cylindrical reflector wall opposite with the radially circumferential emitter slot in the conical surface of the detonator opens. The annulus is transverse in its center or symmetry plane divided to the longitudinal axis, around a ring disk made of electrical as bad as possible to be able to insert conductive material of increased dielectric constant independent of low dielectric losses and high tracking resistance characterized by frequency and temperature, like the fluorine-containing polymer PTFE (polytetrafluoroethylene) sold under trade names such as Teflon, Fluon or Hostaflon is on the market. By choosing the material and dimensions Ring disc can be specified according to the geometric dimensions of the Subsequent annulus an electrical resonance fine tuning without further ado on e.g. make a certain satellite frequency. Preferably is, in addition to the actual annular space, the circumferential circumferential one Antenna slot filled dielectric, namely through an outside on the Washer flange-like circumferential, radial to the surface of the igniter cone extending collar.

Die Verschaltung der Antenne erfolgt über ein zweiadriges, an wenigstens zwei axial voreinander gelegene Stellen der Innenränder des Schlitzes angeschlossenes Antennenkabel. Um eine orthogonale Dipolstruktur zu erzeugen, sind vier solche Anschlußstellen an den Ecken eines konzentrisch zur Zünderachse gedachten Quadrates ausgebildet und über ein Anpaßnetzwerk auf die genormte Impedanz einer 50-Ohm-Koaxialleitung zum rückwärtig im Zünder untergebrachten Antennenverstärker zusammengeführt.The antenna is connected via a two-wire, at least two axially located places of the inner edges of the slot connected Antenna cable. To create an orthogonal dipole structure, there are four Connection points at the corners of a concentric to the igniter axis Squares trained and via a matching network to the standardized impedance a 50-ohm coaxial line to the antenna amplifier housed in the back of the igniter merged.

Jedenfalls liefert die Erfindung eine problemlos abstimmbare, mechanisch extrem beanspruchbare Schlitz-Antenne für den Zünder von Artilleriemunition durch einen Sandwich-Aufbau, bei dem ein zwischen einer oberen und einer unteren formstabil profilierten metallischen Deck-Scheibe axial eingeschlossener, axial geteilter Resonator-Ringraum mit einer dielektrischen Ringscheibe bestückt ist, die sich mit einem umlaufenden Kragen der zentralen zylindrischen Reflektorwand radial gegenüber durch einen axialen Schlitz zwischen den beiden hohlzylindrischen Außenwänden des Ringraumes hindurch bis zur äußeren Oberfläche des ebenfalls umlaufend geschlitzten Zündermantels erstreckt. Bei einer der beiden Deck-Scheiben ist der innere Rand des in den Ringraum mündenden Antennen-Schlitzes durch einen hier in die Stirn der Außenwandung einlegbaren Reifen definiert, an dem in Umfangsrichtung gegeneinander versetzte Anschlußstellen durch die dielektrische Ringscheibe und die axial gegenüberliegende Deck-Scheibe hindurch zu einer Schaltungsträger-Scheibe kontaktiert sind, worauf sie mittels eines Anpassungsnetzwerkes einphasig auf eine Antennenleitung zusammengeführt sind, deren zweite Phase direkt an die dort benachbarte Deck-Scheibe angeschlossen ist.In any case, the invention provides an easily tunable, mechanically extreme loadable slot antenna for the detonator of artillery ammunition a sandwich structure, one between an upper and a lower one dimensionally stable profiled metallic cover washer axially enclosed, axially divided resonator annulus is equipped with a dielectric washer, which with a circumferential collar of the central cylindrical reflector wall radially opposite through an axial slot between the two hollow cylindrical Outer walls of the annulus through to the outer surface of the circumferentially slotted detonator jacket extends. One of the two Cover disks are the inner edge of the antenna slot opening into the annular space by a tire that can be inserted into the forehead of the outer wall defined, at the circumferentially offset connection points through the dielectric washer and the axially opposite cover washer are contacted through to a circuit carrier disc, whereupon they by means of of a matching network merged in a single phase onto an antenna line are, whose second phase is directly connected to the adjacent cover plate is.

Zusätzliche Weiterbildungen und weitere Merkmale und Vorteile der Erfindung ergeben sich aus den weiteren Ansprüchen und aus nachstehender Beschreibung eines in der Zeichnung unter Beschränkung auf das Wesentliche etwas abstrahiert aber angenähert maßstabsgerecht skizzierten bevorzugten Realisierungsbeispiels zur erfindungsgemäßen Lösung. In der Zeichnung zeigt:

Fig. 1
den auf eine Artilleriemunition applizierbaren Zünder mit seinem in diesem Beispiel zwischen halber axialer Höhe und der Basisebene des Zünders gelegenen, mit dielektrischem Material gefüllten Antennen-Schlitz in isometrischer Ansicht,
Fig. 2
nach Art einer Explosionsdarstellung die zwischen Spitze und Basis eines Zünders nach Fig.1 axial eingespannte Antenne und
Fig. 3
nach Art einer Explosionsdarstellung den mechanischen Sandwich-Aufbau der Antenne gemäß Fig.2.
Additional developments and further features and advantages of the invention result from the further claims and from the following description of a preferred implementation example for the solution according to the invention, somewhat abstracted but approximated to scale, limited to the essentials in the drawing. The drawing shows:
Fig. 1
the detonator that can be applied to an artillery ammunition with its antenna slot in this example, which is located between half the axial height and the base plane of the detonator and is filled with dielectric material, in an isometric view,
Fig. 2
in the manner of an exploded view, the antenna clamped axially between the tip and base of an igniter according to FIG
Fig. 3
the mechanical sandwich structure of the antenna according to FIG. 2 in the manner of an exploded view.

Der in Fig. 1 in Ansicht gezeigte Kopf-Zünder 11 ist dafür bestimmt, mittels eines nicht dargestellten Gewindes vor die konisch sich verjüngende Front einer drallstabilisierten oder aerodynamisch stabilisierten Artilleriemunition geschraubt zu werden. Er ist mit einem seine leicht ballige Kegel-Wandung 12 ringsum radial durchdringenden Antennen-Schlitz 13 ausgestaltet, der mit dielektrischem Material gefüllt ist, das mit der axial beiderseits anschließenden Außenmantelfläche der Wandung 12 bündig abschließt. Vor der Radialebene des Schlitzes 13, also zur Spitze des Zündervorderteils 15 hin gelegen, befinden sich mechanische oder elektromechanisch wirkende Sicherungs- und Auslöseeinrichtungen des Zünders 11 sowie gegebenenfalls aerodynamisch wirkende Bremseinrichtungen zur Flugbahnverkürzung, wie in der eigenen älteren Anmeldung 199 57 363.8 vom 29.11.99 näher beschrieben (worauf hier zur Ergänzung vorliegender Erfindungsoffenbarung hinsichtlich eines bevorzugten Anwendungsfalles der Schlitzantenne voll-inhaltlich Bezug genommen wird). Hinter der Radialebene des Schlitzes 13, also zur Basis des Zünderhinterteils 16 hin gelegen, befinden sich elektrische Schaltungen zur Antennenverstärkung und Signalverarbeitung der über den Schlitz 13 im Höchstfrequenzspektrum abgestrahlten oder aufgenommenen elektromagnetischen Energie.The head detonator 11 shown in FIG. 1 is intended for use by means of a not shown thread in front of the conically tapered front of a spin-stabilized or aerodynamically stabilized artillery ammunition screwed shut become. It is radially all around with a slightly spherical cone wall 12 penetrating antenna slot 13 designed with dielectric material is filled with the axially on both sides adjoining outer surface of the Wall 12 is flush. In front of the radial plane of the slot 13, that is to say The tip of the fuse front part 15 is located, there are mechanical or Electromechanical fuse and trigger devices of the igniter 11 and possibly aerodynamically acting braking devices for shortening the trajectory, as in the earlier application 199 57 363.8 dated 11/29/99 described in more detail (whereupon to supplement the present disclosure of the invention regarding a preferred application of the slot antenna full reference is made). Behind the radial plane of the slot 13, that is to the base of the detonator rear part 16, there are electrical ones Circuits for antenna amplification and signal processing via the Slot 13 in the maximum frequency spectrum emitted or recorded electromagnetic Energy.

Wie in Fig. 2 skizziert sind Zündervorderteil 15 und Zünderhinterteil 16 unter koaxialer Zwischenlage der mechanisch extrem hoch beanspruchbaren Antenne 17 mittels zur Zünder-Längsachse 18 parallel verlaufender, durch die Antenne 17 hindurch sich erstreckender Spannschrauben 19 miteinander verbunden. Eine flexible Antennenleitung 20 mit Koaxialquerschnitt führt zum im Zünderhinterteil 16 gelegenen Antennenverstärker (nicht zeichnerisch dargestellt). Bei diesem handelt es sich im Falle einer Empfangsantenne um einen Vorverstärker vor der und im Falle einer Sendeantenne um einen Leistungsverstärker nach der Empfänger- bzw. Sender-Signalverarbeitungsschaltung, die wie ihre Stromversorgungseinheit 22 (etwa in Form einer aktivierbaren Batterie oder eines Anströmungsgenerators) im Bereich der Basis des Zünderhinterteils 16 eingebaut ist.As sketched in FIG. 2, the front part 15 and the rear part 16 are underneath Coaxial intermediate layer of the mechanically extremely heavy-duty antenna 17 by means of the antenna 17, which runs parallel to the igniter longitudinal axis 18 extending clamping screws 19 connected to each other. A flexible one Antenna line 20 with coaxial cross section leads to the rear part of the igniter 16 located antenna amplifier (not shown in the drawing). With this in the case of a receiving antenna, it is a preamplifier in front of the and in the case of a transmitting antenna by a power amplifier after the receiver or transmitter signal processing circuit that like their power supply unit 22 (for example in the form of an activatable battery or an inflow generator) is installed in the area of the base of the detonator rear part 16.

Aus der Detaildarstellung Fig. 3 ergibt sich, daß und wie die scheibenförmige Antenne 17 aus verwindungssteifen Komponenten sandwichartig aufgebaut ist. Sie besteht im wesentlichen aus zwei mechanisch steifen metallenen Deck-Scheiben, nämlich einer zum Zündervorderteil 15 hin gelegenen, tellerartig flach topfförmig rotationssymmetrisch profilierten metallenen Oberscheibe 23 und einer dazu gegensinnig orientiert zum Zünderhinterteil 16 hin gelegenen, ebenfalls tellerartig flach topfförmigen - aber in diesem Beispielsfalle aus Handhabungsgründen für den Anschluß der Antennenleitung zweiteiligen - rotationssymmetrisch profilierten metallenen Unterscheibe 24. Jede dieser beiden Scheiben 23-24 weist eine zentrale Versteifung in Form eines vom Topf-Boden 26 zwischen die Wandungen 24 bzw. 31 koaxial hervorragenden Sockels 25 auf. Dadurch ist radial zwischen diesen Sockeln 25 und den dazu distanziert umlaufenden, hohlzylindrischen Wandungen 27, 31 sowie axial zwischen den Böden 26 ein quer zur Längsachse 18 etwa mittig geteilter Resonator-Ringraum 28 definiert, indem bei axial voneinander beabstandeten Stirnkanten der Wandungen 27-31 die tellerförmige Oberscheibe 23 mit ihrem Sockel elektrisch leitend da flächig axial auf der Stirn des Sockels 25 in der ebenfalls tellerförmigen Unterscheibe 24 aufliegt. Die axial voneinander beabstandeten Stirnkanten der Wandungen 27-31 definieren als zwischen einander, der zylindrischen Reflektorwand der Sockel 25 radial gegenüber, den radial vom Ringraum 28 ausgehenden eigentlichen Antennen-Schlitz 13'.3 shows that and how the disc-shaped Antenna 17 is made of torsionally rigid components sandwiched. It essentially consists of two mechanically stiff metal Cover disks, namely a plate-like towards the ignition front part 15 flat cup-shaped, rotationally symmetrical profiled metal top plate 23 and one oriented in the opposite direction to the detonator rear part 16, likewise plate-like flat pot-shaped - but in this example case for handling reasons for connecting the antenna cable in two parts - rotationally symmetrical profiled metal washer 24. Each of these two washers 23-24 has a central stiffening in the form of a pot bottom 26 between the Walls 24 and 31 coaxially outstanding base 25. This makes it radial between these bases 25 and the circumferential, hollow cylindrical ones spaced apart therefrom Walls 27, 31 and axially between the floors 26 a transverse to the longitudinal axis 18 approximately centrally divided resonator annulus 28 defined by axially spaced end edges of the walls 27-31 the plate-shaped Upper plate 23 with its base electrically conductive because axially on the forehead of the base 25 rests in the likewise plate-shaped lower plate 24. The axial mutually spaced end edges of the walls 27-31 define as between radially opposite each other, the cylindrical reflector wall of the base 25, the actual antenna slot 13 'extending radially from the annular space 28.

Da dieser Ringraum 28 also axial geteilt ist, läßt sich in ihn vor dem Aufsetzen der Oberscheibe 23 eine Ringscheibe 29 aus dielektrischem Material einlegen. Die weist einen außen radial umlaufenden, flanschförmig vorstehenden Kragen 30 von gegenüber der Ringscheibe 29 deutlich geringerer axialer Stärke auf. Der Kragen 30 erstreckt sich radial bezüglich der Längsachse 18 durch den Schlitz 13' hindurch, der aufgrund der axialen Höhe der Sockels 25 zwischen den aufeinander zu weisenden Stirnflächen der den Ringraum 28 außen einfassenden Wandungen 27 und 31 verbleibt. Der Kragen 30 ragt vorzugsweise sogar noch radial durch den Schlitz 13' hindurch in den Schlitz 13 in der Wandung 12 zwischen Zündervorderteil 15 und Zünderhinterteil 16 hinein, bis zum bündigen Abschluß mit den unmittelbar benachbarten Außenmantelflächen. Das erleichtert die Montage beim axialen Zusammenfügen von Zündervorder- und -hinterteil 15-16 über die Antenne 17 und vermeidet hier Wirbelbildungen im Bereich der strömungsdynamisch besonders empfindlichen Ogive des Munitionskörpers.Since this annular space 28 is thus axially divided, it can be placed in it before it is placed insert an annular disk 29 made of dielectric material into the upper disk 23. The has an externally radially circumferential, flange-like projecting collar 30 from compared to the annular disc 29 of significantly lower axial strength. The collar 30 extends radially with respect to the longitudinal axis 18 through the slot 13 ', which due to the axial height of the base 25 between each other facing end faces of the walls 27 enclosing the annular space 28 on the outside and 31 remains. The collar 30 preferably projects even radially through the Slot 13 'into the slot 13 in the wall 12 between the front part of the igniter 15 and detonator rear part 16 until it is flush with the immediately adjacent outer surface. This makes assembly easier axial joining of the front and rear of the igniter 15-16 via the antenna 17 and avoids eddies in the area of fluid dynamics particularly sensitive ogive of the ammunition body.

In der Radialebene vor der Oberscheibe 23, also zum Zündervorderteil 15 hin gelegen, ist die Antenne 17 mit einer dielektrischen Scheibe 32 belegt. Diese dient als Verdrahtungsträger für ein Verknüpfungsnetzwerk zwischen vier zueinander orthogonalen Anschlüssen an das innen, zum Ringraum 28 hin gelegene Ende des Antennen-Schlitzes 13'. Dazu sind auf der Scheibe 32 an den Ecken eines gedachten Quadrates vier Koaxialleiterstücke 33 parallel zur System-Längsachse 18 verankert. Die Innenleiter durchgreifen die Ringscheibe 29, um schließlich an einem schmalen elektrisch leitenden Reifen 35 zu enden. Die Außenleiter sind mit der Oberscheibe 23 und mit der Unterseite der Schaltungsträgerscheibe 32 leitfähig verbunden. Der ist Bestandteil der zweiteiligen Unterscheibe 23 und derart in eine Stirnausdrehung in dessen Wandung 31 einlegbar, daß er die rückwärtige innere Kante des zum Ringraum 28 sich öffnenden Schlitzes 13'definiert. Zunächst aber ist an diese Schlitz-Kante in Form des noch aus der Unterscheibe 24 entnommenen Reifens 35 der Innenleiter der koaxialen Antennenleitung 20 angeschlossen, nämlich über das auf der Schaltungsträger-Scheibe 33 ausgebildete Netzwerk zum Zusammenführen der vier jeweils um 90° gegeneinander versetzten Kontaktpunkte am umlaufenden Schlitz 13' und über die Leiterstifte mittels einer Steckverbindung in Form einer Koaxial-Steckbuchse 36. Danach wird die Unterscheibe 24 von rückwärts über diesen so schon durch die dielektrische Ringscheibe 29 hindurch an die Schaltungsträger-Scheibe 32 vor der Oberscheibe 23 elektrisch angeschlossenen Reifen 35 gestülpt.In the radial plane in front of the top disk 23, that is to say toward the front part 15 of the fuse, the antenna 17 is covered with a dielectric disk 32. This serves as a wiring support for a link network between four to each other orthogonal connections to the inside, towards the annular space 28 towards the end of the Antenna slot 13 '. For this purpose, an imaginary on the disc 32 at the corners Squares four coaxial conductor pieces 33 parallel to the system longitudinal axis 18 anchored. The inner conductors reach through the washer 29 to finally to end a narrow electrically conductive tire 35. The outer conductors are with the top plate 23 and with the underside of the circuit carrier plate 32 conductive connected. That is part of the two-part washer 23 and such in a turn of the forehead in the wall 31 insertable that he the rear inner edge of the slot 13 'opening towards the annular space 28. First but is on this slot edge in the form of the still from the washer 24th removed tire 35 of the inner conductor of the coaxial antenna line 20, namely via that formed on the circuit carrier disk 33 Network for merging the four, each offset by 90 ° Contact points on the circumferential slot 13 'and by means of the conductor pins a plug-in connection in the form of a coaxial socket 36. Then the Washer 24 from the back over this already through the dielectric Washer 29 through to the circuit carrier disk 32 in front of the upper disk 23 electrically connected tires 35 put over.

Die der rückwärtigen axial gegenüberliegende, vordere innere Schlitzkante ist durch die innere Stirnkante der umlaufenden Wandung 31 der Oberscheibe 23 gegeben. Deren elektrischer Anschluß an den Außenleiter der Antennenleitung 20 erfolgt dadurch, daß die Koaxial-Steckbuchse 36 für die Antennenleitung 20, die Ringscheibe 29 und die Unterscheibe 24 zum Zünderhinterteil 16 hin unter Spiel achsparallel durchgreifend, mittels Verschraubungen 37 exzentrisch auf die Innenseite des Bodens der Oberscheibe 23 montiert ist.That is the rear inner axially opposite slot edge through the inner end edge of the circumferential wall 31 of the upper pane 23 given. Their electrical connection to the outer conductor of the antenna line 20 takes place in that the coaxial socket 36 for the antenna line 20, the Washer 29 and the washer 24 to the detonator rear part 16 with play Gripping axially parallel, by means of screw connections 37 eccentrically on the inside the bottom of the upper plate 23 is mounted.

Dieser in Fig. 3 dargestellte, schon in sich mechanisch äußerst stabile Sandwich-Aufbau der Antenne 17 wird mittels Schrauben 38 koaxial zwischen Antennen-Unterscheibe 24 und -Oberscheibe 23 unter Zwischenlage des die hohlzylindrischen Wandungen 26, 31 radial durchgreifenden Kragens 30 axial miteinander verspannt und dadurch zusätzlich verwindungssteif. Auf wenigstens einem der Boden-Sockel 25 montierte Pfeiler 39, die durch die Ringscheibe 29 hindurch in die axial gegenüberliegende Scheibe 23 bzw. 24 eingreifen, dienen beim axialen zusammenführen als Montagehilfe und danach als Verdrehsicherung zwischen Oberscheibe 23 und Unterscheibe 24, also der Aufnahme drallbedingter Rotationskräfte zwischen diesen beiden Teilen des Hohlraumresonators der Schlitzantenne 17.This sandwich structure shown in FIG. 3, which is mechanically extremely stable in itself the antenna 17 is coaxial between the antenna washer by means of screws 38 24 and top plate 23 with the interposition of the hollow cylindrical Walls 26, 31 radially penetrating collar 30 axially with each other tense and therefore additionally torsion-resistant. On at least one of the Floor base 25 mounted pillar 39, which through the washer 29 in the axially opposite disk 23 and 24 engage, serve in the axial merge as an assembly aid and then as an anti-twist device between Upper disk 23 and lower disk 24, that is, the absorption of spin-related rotational forces between these two parts of the slot antenna cavity 17th

Claims (8)

Quer zur Längsachse (18) konzentrisch in einem Artillerie-Zünder (11) angeordnete scheibenförmige Schlitz-Antenne (17), dadurch gekennzeichnet, daß sie als ein geteilter und mit einer dielektrischen Ringscheibe (29) bestückter Resonator-Ringraum (28) ausgelegt ist, deren Antennen-Schlitz (13') einer zentralen zylindrischen Reflektorwand radial gegenüber zwischen den axial zueinander distanziert umlaufenden hohlzylindrischen Wandungen (27-31) des Ringraumes (28) gegeben ist.Disc-shaped slot antenna (17) arranged concentrically in an artillery detonator (11) transverse to the longitudinal axis (18), characterized in that it is designed as a divided resonator annular space (28) equipped with a dielectric annular disc (29), the antenna slot (13 ') of which is provided radially opposite a central cylindrical reflector wall between the axially distant circumferential hollow cylindrical walls (27-31) of the annular space (28). Antenne nach Anspruch 1, dadurch gekennzeichnet, daß die Ringscheibe (29) mit einem flanschartig radial umlaufenden Kragen (30) in den Schlitz (13) hineinragt.Antenna according to claim 1, characterized in that the annular disc (29) projects into the slot (13) with a flange-like radially circumferential collar (30). Antenne nach dem vorangehenden Anspruch, dadurch gekennzeichnet, daß der Kragen (30) mit der äußeren Oberfläche der umlaufend geschlitzten (13) Zünder-Wand (12) bündig abschließt.Antenna according to the preceding claim, characterized in that the collar (30) is flush with the outer surface of the circumferentially slotted (13) detonator wall (12). Antenne nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Ringraum (28) zwischen flach topfförmigen metallischen Scheiben (23-24) ausgebildet sind, die mit aus deren Böden (26) hervor ragenden zentralen Sockeln, (25) unter axialer Distanz ihrer voreinander umlaufenden Wandungen (27-31), großflächig gegeneinander axial abgestützt sind.Antenna according to one of the preceding claims, characterized in that the annular space (28) is formed between flat, pot-shaped metallic disks (23-24) which have central bases (25) protruding from their bases (26) at an axial distance from one another circumferential walls (27-31), are axially supported against one another over a large area. Antenne nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß sie mit einer Schaltungsträger-Scheibe (32) bestückt ist, die ein Netzwerk zum Zusammenführen mehrerer längs eines inneren Randes des Schlitzes (13') gelegenen Anschlußstellen auf eine Ader einer Antennenleitung (20) aufweist.Antenna according to one of the preceding claims, characterized in that it is equipped with a circuit carrier disc (32) which has a network for bringing together a plurality of connection points located along an inner edge of the slot (13 ') onto one wire of an antenna line (20) , Antenne nach dem vorangehenden Anspruch, dadurch gekennzeichnet, daß der innere Rand des Schlitzes (13') durch einen Reifen (35) gegeben ist, der in eine der hohlzylindrischen Wandungen (27 oder 31) des Ringraumes (28) stimseitig eingelegt ist.Antenna according to the preceding claim, characterized in that the inner edge of the slot (13 ') is provided by a tire (35) which is inserted at one end in one of the hollow cylindrical walls (27 or 31) of the annular space (28). Antenne nach den beiden vorangehenden Ansprüchen, dadurch gekennzeichnet, daß der Reifen (35) an peripher gegeneinander versetzten Orten mittels achsparallel die Ringscheibe (29) und die dahinter gelegene Deck-Scheibe (23 oder 24) des Ringraumes (28) durchgreifender Leiterstifte (33) an das Netzwerk auf der Schaltungsträger-Scheibe (32) elektrisch leitend angeschlossen ist.Antenna according to the two preceding claims, characterized in that the tire (35) at peripherally offset locations by means of axially parallel conductor discs (33) penetrating the annular disc (29) and the cover disc (23 or 24) of the annular space (28) behind it. is electrically conductively connected to the network on the circuit carrier disk (32). Antenne nach einem der drei vorangehenden Ansprüche; dadurch gekennzeichnet, daß die Ringraum-Deckscheibe (23 oder 24), außerhalb derer die Schaltungsträger-Scheibe (32) angeordnet ist, für den Anschluß einer Antennenleitung (20) mit einer Steckbuchse (36) bestückt ist, die einpolig mit der Deck-Scheibe (23 bzw. 24) und einpolig mit dem Netzwerk auf der dahinter gelegenen Schaltungsträger-Scheibe (32) verbunden ist.Antenna according to one of the three preceding claims; characterized in that the annular space cover plate (23 or 24), outside of which the circuit carrier plate (32) is arranged, is equipped with a socket (36) for the connection of an antenna line (20), which has a single pole with the cover plate (23 or 24) and single-pole with the network on the circuit carrier disc (32) located behind it.
EP01118342A 2000-08-03 2001-07-27 Slot antenna for artillery ammunition Expired - Lifetime EP1178566B1 (en)

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DE20022480U 2000-08-03
DE20022480U DE20022480U1 (en) 2000-08-03 2000-08-03 Ammunition article with antenna for satellite navigation

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WO2003010852A1 (en) * 2001-07-26 2003-02-06 Diehl Munitionssysteme Gmbh & Co.Kg Slot antenna for artillery ammunition
EP1178279B1 (en) * 2000-08-03 2004-11-10 Diehl Munitionssysteme GmbH & Co. KG Projectile with an antenna for satellite navigation

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10227251B4 (en) * 2002-06-19 2004-05-27 Diehl Munitionssysteme Gmbh & Co. Kg Combination antenna for artillery ammunition

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US4047485A (en) * 1975-12-24 1977-09-13 Motorola, Inc. Compact electrical fuze
US4431996A (en) * 1981-12-03 1984-02-14 The United States Of America As Represented By The Secretary Of The Air Force Missile multi-frequency antenna
US5864318A (en) * 1996-04-26 1999-01-26 Dorne & Margolin, Inc. Composite antenna for cellular and gps communications
US6098547A (en) * 1998-06-01 2000-08-08 Rockwell Collins, Inc. Artillery fuse circumferential slot antenna for positioning and telemetry

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US4047485A (en) * 1975-12-24 1977-09-13 Motorola, Inc. Compact electrical fuze
US4431996A (en) * 1981-12-03 1984-02-14 The United States Of America As Represented By The Secretary Of The Air Force Missile multi-frequency antenna
US5864318A (en) * 1996-04-26 1999-01-26 Dorne & Margolin, Inc. Composite antenna for cellular and gps communications
US6098547A (en) * 1998-06-01 2000-08-08 Rockwell Collins, Inc. Artillery fuse circumferential slot antenna for positioning and telemetry

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EP1178279B1 (en) * 2000-08-03 2004-11-10 Diehl Munitionssysteme GmbH & Co. KG Projectile with an antenna for satellite navigation
WO2003010852A1 (en) * 2001-07-26 2003-02-06 Diehl Munitionssysteme Gmbh & Co.Kg Slot antenna for artillery ammunition

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DE50103843D1 (en) 2004-11-04
DE10136469A1 (en) 2002-05-08
ATE278253T1 (en) 2004-10-15
EP1178566B1 (en) 2004-09-29

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