CN103532524A - Pulse radio signal generating and transmitting system and control method of system - Google Patents
Pulse radio signal generating and transmitting system and control method of system Download PDFInfo
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- CN103532524A CN103532524A CN201310447644.0A CN201310447644A CN103532524A CN 103532524 A CN103532524 A CN 103532524A CN 201310447644 A CN201310447644 A CN 201310447644A CN 103532524 A CN103532524 A CN 103532524A
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Abstract
The invention discloses a pulse radio signal generating and transmitting system comprising a digital control back end, a first switch, a second switch, an exciting unit, a primary resonance unit, a coupling unit and a secondary resonance unit, wherein the secondary resonance unit comprises an antenna unit, the digital control back end is connected with the exciting unit through the first switch and is also connected with the coupling unit through the second switch, the exciting unit, the primary resonance unit, the coupling unit and the secondary resonance unit are sequentially and electrically connected, and the digital control back end controls the on-off of the first switch and the second switch, so that the system carries out a switching operation at an isolating state and a coupling state and realizes the transmission of pulse signals. The invention further discloses a control method of the pulse radio signal generating and transmitting system. According to the pulse radio signal generating and transmitting system and the control method of the system, which are disclosed by the invention, no complex semiconductor electronic devices and circuits are provided, the power consumption and the complexity of the system are reduced, the circuits are simple, the design is smart, and the system and the control method are worthy of being popularized and applied.
Description
Technical field
The invention belongs to pulse wireless electrical domain, particularly a kind of impulse radio signal generation and emission system and control method thereof.
Background technology
Pulse wireless power technology has advantages of a series of uniquenesses such as system configuration is simple, cost is low, low in energy consumption, in fields such as radar detection, wireless near field communication, wireless sensing and radio-frequency (RF) identification, has many application.The application scenarios of pulse wireless power technology is all comparatively responsive to cost, power consumption and volume, so the low-power consumption of system, low complex degree and miniaturization are the study hotspots of industrial quarters and academia always.
The method that pulse signal generates at present mainly contains two large classes: photoelectric method and electronic method.Photoelectric method can obtain the pulse of psec (ps) level width, and high conformity, but conversion efficiency is low, also fails at present to enter the practical stage.Electronic method utilizes semiconductor PN to tie the optimum breakdown characteristics of reverse snowslide and high-speed figure combinational logic circuit produces the following ultra-wideband pulse of 1ns, because its circuit structure comparatively simply obtains studying widely and applying.Electronic method mainly can divide again three kinds: the first is to utilize the warfare of high-speed cmos logic gates to produce UWB pulse, this mode can produce approximate each rank differential Gaussian pulse, but output pulse amplitude is low, be generally hundreds of mV, circuit static power consumption is larger.The second is that traditional avalanche breakdown conducting control capacitance electric discharge based on BJT forms UWB pulse.This class pulse generator output pulse amplitude is large, circuit static power consumption approaches zero, pulse duration is little and easily control, but generally can only produce approximate Gaussian pulse, and frequency spectrum DC component is large, need to just can meet FCC Emission Mask standard through strict Waveform shaping.The third is to utilize various high-speed electronic components, sows the integrated circuits such as field effect transistor logical circuit as tunnel diode, step recovery diode, pulsed-discharge tube, arsenic.The designed pulse-generator circuit structure of electronic method is all comparatively complicated, and integrated have certain difficulty.For the requirement of system miniaturization, it is also a research tendency that electronically small antenna is rationally applied to impulse ejection system always.Electronically small antenna refers to that antenna size is much smaller than the antenna of wavelength, is characterized in that radiation resistance is little, input reactance is high, radiation efficiency is low, directivity is weak, simple in structure, its performance is insensitive to its structure.The transfer function of electronically small antenna is similar linearity, and this point meets the distortionless requirement of time domain impulse waveform, but because radiation resistance is little, radiation efficiency is very low, is conventionally difficult to be applied to the transmission of pulse signal, and this is also that the present invention puts forth effort one of problem solving.
In architecture, traditional impulse ejection system is by a plurality of unit cascaded forming such as pulse generation, shaping, amplification and transmitting antennas, so need each several part to carry out design separately and debugging in design process, has increased the complexity that design realizes.For example, for the application of high rate communication, conventionally need to adopt a plurality of unit such as shaping pulse, mixed modulated, broadband power amplifier, power consumption and cost are larger.For low rate application, can adopt the synthetic impulse technology based on transmission line time delay to produce pulse, cost and power consumption are lower, but the accuracy of delay unit is had higher requirements, and design realizes comparatively complicated.
Summary of the invention
The present invention is directed to the defect of background technology, a kind of impulse radio signal generation and emission system and control method thereof have been proposed, without complicated semi-conductor electronic device and circuit, by switch, coordinate the work between each unit, produce and transmitted pulse radio signal, reduced system power dissipation and system complexity, circuit is simple, be skillfully constructed, be worthy of popularization.
In order to address the above problem, technical scheme of the present invention is as follows;
A kind of impulse radio signal produces and emission system, comprise digital control rear end, the first switch, second switch, exciting unit, primary resonant unit, coupling unit and secondary resonance unit, secondary resonance unit comprises antenna element, exciting unit, the first switch, primary resonant unit, second switch, coupling unit and secondary resonance unit are electrical connected successively, digital control rear end is connected with second switch with the first switch respectively, and controls its break-make.
The invention also discloses the control method of described impulse radio signal generation and emission system, specific as follows: under the control of digital control rear end, by first, second on-off control system, under isolation and these two kinds of operating states of couple state, to carry out switch operating:
Isolation: the first switch closure is controlled in digital control rear end and second switch disconnects, exciting unit is communicated with primary resonant unit, exciting unit offers the non-zero energy storage of primary resonant unit, the energy storage of secondary resonance unit is zero, between primary resonant unit and secondary resonance unit, there is no energy exchange;
Couple state: the first switch disconnection and second switch closure are controlled in digital control rear end, exciting unit and primary resonant unit disconnect, coupling unit work, the energy storage of primary resonant unit and secondary resonance unit exchanges back and forth, when the energy storage of primary resonant unit reaches maximum, it is minimum that the energy storage of secondary resonance unit reaches, when elementary resonant element energy storage hour, it is maximum that the energy storage of secondary resonance unit reaches, and forms pulse signal transmitting in this process;
After pulse signal transmitting, remaining energy is transferred to primary resonant unit, and now, digital control rear end is controlled second switch and disconnected, and turn-offs coupling unit, is switched to isolation, completes the emission process of pulse signal.
As further prioritization scheme of the present invention, described exciting unit adopts direct voltage source or single-frequency sinusoidal motivation.
As further prioritization scheme of the present invention, described coupling unit adopts LC parallel branch, aperture or microstrip line coupled modes.
As further prioritization scheme of the present invention, described primary resonant unit and secondary resonance unit adopt mutual inductor, metal, medium or transmission line resonant cavity.
The present invention adopts above technical scheme compared with prior art, has following technique effect:
The first, the present invention compares with traditional pulse wireless emitter architecture, can significantly reduce system complexity;
The second, pulse generate of the present invention is without complicated semiconductor device, by the resonance recycling resonant element stored energy that is coupled, realizes low power dissipation design;
Three, system, without the coupling of considering between each unit of independent design, without modules such as special frequency conversion, modulation, can reduce designing and making cost;
Four, the repetition rate that the present invention realizes pulse-width, pulse amplitude and pulse by the Real-Time Switch control to resonant element and coupling unit regulates and controls, simple with digital baseband system Interface design, digital-to-analog conversion (ADC) circuit without special, is easy to realize the digitlization of transmitter system.
Accompanying drawing explanation
Fig. 1 is circuit diagram of the present invention.
Fig. 2 (a) is first embodiment of the present invention schematic diagram.
Typical waveform schematic diagram when Fig. 2 (b) is first embodiment of the present invention work.
Fig. 3 is second embodiment of the present invention schematic diagram.
Fig. 4 (a) is third embodiment of the present invention schematic diagram.
Fig. 4 (b) is the waveform schematic diagram of the third embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, technical scheme of the present invention is described in further detail:
A kind of impulse radio signal generation and emission system and control method thereof, as shown in Figure 1, comprise digital control rear end, the first switch, second switch, exciting unit S1, primary resonant cell S 2, coupling unit S3 and secondary resonance cell S 4, exciting unit S1, primary resonant cell S 2, coupling unit S3 and secondary resonance cell S 4 are electrical connected successively, exciting unit S1 is controlled by the first switch by digital control rear end, for primary resonant cell S 2 provides resonance energy storage; Digital control rear end is connected with coupling unit S3 by second switch, and the antenna element that secondary resonance cell S 4 comprises high Q value, in order to transmitted pulse.
In technical scheme of the present invention, by digital control rear end, provided the control signal of first and second switch, by on-off control system, between two kinds of operating states, switch, that is:
Isolation: it is closed that the first switch is controlled in digital control rear end, second switch disconnects, and coupling unit S3 does not work, and between primary resonant cell S 2 and secondary resonance cell S 4, there is no energy exchange.The first switch is communicated with exciting unit S1 and primary resonant cell S 2, and exciting unit S1 offers the 2 non-zero energy storage of primary resonant cell S, and 4 energy storage of secondary resonance cell S are zero.
Couple state: the first switch disconnection and second switch closure are controlled in digital control rear end, exciting unit S1 is communicated with primary resonant cell S 2, second switch is closed, start coupling unit S3 work, the energy storage of primary resonant cell S 2 and secondary resonance cell S 4 exchanges back and forth, when 2 energy storage of primary resonant cell S reach maximum, it is minimum that 4 energy storage of secondary resonance cell S reach, when elementary resonant element S2 energy storage hour, it is maximum that 4 energy storage of secondary resonance cell S reach, and forms pulse signal transmitting in this process.
After pulse signal transmitting, remaining energy is transferred to primary resonant cell S 2, and second switch turn-offs coupling unit S3, is switched to isolation, pulse signal battery has fired.
In the present invention, pulse signal originates in system and by isolation, is switched to the moment t of couple state
0.(t after switching
0constantly), the energy of primary resonant cell S 2 storages is coupled to secondary resonance cell S 4 by S3, and wherein the antenna element of portion of energy in S4, to external radiation, forms the pulse signal transmitting of approximate Gaussian envelope.Pulse signal ends is in secondary resonance cell S 4 energy storage minimal instant t
1, to carve at this moment, system is got back to isolation, and secondary resonance cell S 4 stops resonance, and antenna element stops transmitted pulse.Because portion of energy is through antenna element radiation loss, primary resonant cell S 2 is at t
1energy storage is constantly less than t
0constantly.The energy of loss provides supplementary by exciting unit S1, t
1a period of time is constantly energy storage convalescence, during 2 energy storage of primary resonant cell S return to t
0initial energy storage constantly, for generation and the transmitting of next pulse signal are prepared.The repetition rate of the FREQUENCY CONTROL pulse signal that the present invention is switched by control switch.By the resonance frequency of regulation and control exciting unit S1 and primary resonant cell S 2, centre frequency that can regulating impulse signal.Stiffness of coupling by regulation and control coupling unit can be controlled the speed of energy exchange between humorous exciting unit S1 and primary resonant cell S 2, thereby realizes the control of pulse-width.
Fig. 2 (a) is depicted as the embodiment of the present invention 1.Exciting unit S1 is direct voltage source V
dC, primary resonant cell S 2 consists of a simple LC resonant circuit, and secondary resonance cell S 4 consists of electronically small antenna and match circuit, and match circuit can adopt matching capacitance or coupling inductance.Coupling unit S2 is realized by the mutual inductor of weak coupling.Switch is closed, and, shown in Fig. 2 (a), when port one is closed, direct voltage source is capacitor C
scharging.T
0constantly, switch is got to primary resonant unit 2 ports, and primary resonant circuit produces resonance, aerial radiation impulse waveform, (t after an end-of-pulsing
1constantly), energy Basic Couplings is got back to capacitor C
s, the first switch is closed 1 port again, and DC source is capacitor C
scharging, the energy of supplementary radiation loss, other parts isolation of while and system.
Typical waveform schematic diagram when Fig. 2 (b) is depicted as embodiment 1 work, wherein solid line represents capacitor C
son voltage waveform.At t
0constantly, capacitor C
son voltage stabilization and equate with direct voltage source output voltage.T
0constantly, switch is change state under the control of digital control rear end, from 1 port, gets to 2 ports, capacitor C
swith inductance L
sresonance by mutual inductance and secondary resonance elements exchange energy, portion of energy forms aerial radiation pulse.Until t
1constantly, switch changes state again, from 2 ports, gets to 1 port, and dump energy is got back to capacitor C
s, DC source is to capacitor C
scharging recovers its stored energy, and through after a while, energy storage returns to the initial condition before impulse ejection.The pulse signal waveform of dotted line representative antennas radiation in figure.
Embodiment illustrated in fig. 32 is basic identical with example 1, and what difference was that the realization of coupling unit S2 adopts is a LC parallel branch, can be by regulating inductance L
cand capacitor C
cvalue regulation and control couplings size, and then regulation and control pulse duration.In Fig. 4 (a) illustrated embodiment 3, exciting unit S1 adopts single frequency sinusoidal signal to realize, and the frequency of this excitation and primary resonant cell S 2, secondary resonance cell S 4 are identical.Switch is under the control of digital control rear end, and while being connected to 1 port, system enters couple state, and exciting unit and circuit remainder disconnect, and the energy storage of primary resonant cell S 2 is coupled to secondary resonance cell S 4, simultaneously aerial radiation pulse signal.When switch is connected to 2 port, coupling unit S3 is by short circuit, and system enters isolation, and primary resonant cell S 2 is isolated with secondary resonance cell S 4, now antenna non-radiating pulse.Primary resonant cell S 2 obtains and supplements from exciting unit between energy storage convalescence because of the energy of impulse radiation loss.
Typical waveform schematic diagram when Fig. 4 (b) is depicted as embodiment 3 work.Wherein solid line represents capacitor C in primary resonant cell S 2
son voltage waveform, the pulse signal waveform of dotted line representative antennas radiation.
Need explanation, the specific embodiment of foregoing description only, in order to explain the present invention, is not intended to limit the present invention.For example, primary resonant cell S 2, secondary resonance cell S 4 also can adopt metal, medium or transmission line resonant cavity to realize, and coupling unit S3 can adopt the coupled modes such as aperture, microstrip line.
Claims (5)
1. an impulse radio signal produces and emission system, it is characterized in that: comprise digital control rear end, the first switch, second switch, exciting unit, primary resonant unit, coupling unit, secondary resonance unit and antenna element, secondary resonance unit is connected with antenna element, exciting unit, the first switch, primary resonant unit, second switch, coupling unit and secondary resonance unit are electrical connected successively, digital control rear end is connected with second switch with the first switch respectively, and controls its break-make.
2. a kind of impulse radio signal according to claim 1 produces and emission system, it is characterized in that: described exciting unit adopts direct voltage source or single-frequency sinusoidal motivation.
3. a kind of impulse radio signal according to claim 1 produces and emission system, it is characterized in that: described coupling unit adopts LC parallel branch, aperture or microstrip line coupled modes.
4. a kind of impulse radio signal according to claim 1 produces and emission system, it is characterized in that: described primary resonant unit and secondary resonance unit adopt mutual inductor, metal, medium or transmission line resonant cavity.
5. based on a kind of impulse radio signal claimed in claim 1, produce and the control method of emission system, it is characterized in that:
Under the control of digital control rear end, by first, second on-off control system, under isolation and these two kinds of operating states of couple state, carry out switch operating:
Isolation: the first switch closure is controlled in digital control rear end and second switch disconnects, exciting unit is communicated with primary resonant unit, exciting unit offers the non-zero energy storage of primary resonant unit, the energy storage of secondary resonance unit is zero, between primary resonant unit and secondary resonance unit, there is no energy exchange;
Couple state: the first switch disconnection and second switch closure are controlled in digital control rear end, exciting unit and primary resonant unit disconnect, coupling unit work, the energy storage of primary resonant unit and secondary resonance unit exchanges back and forth, when the energy storage of primary resonant unit reaches maximum, it is minimum that the energy storage of secondary resonance unit reaches, when elementary resonant element energy storage hour, it is maximum that the energy storage of secondary resonance unit reaches, and forms pulse signal transmitting in this process;
After pulse signal transmitting, remaining energy is transferred to primary resonant unit, and now, digital control rear end is controlled second switch and disconnected, and turn-offs coupling unit, is switched to isolation, completes the emission process of pulse signal.
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| CN201310447644.0A CN103532524B (en) | 2013-09-27 | 2013-09-27 | Pulse radio signal generating and transmitting system and control method of system |
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| CN201310447644.0A CN103532524B (en) | 2013-09-27 | 2013-09-27 | Pulse radio signal generating and transmitting system and control method of system |
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Cited By (2)
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| WO2018197849A1 (en) * | 2017-04-28 | 2018-11-01 | Sureflap Ltd | Pet monitoring device |
| CN110956796A (en) * | 2019-12-30 | 2020-04-03 | 广东工业大学 | Wireless switch device, equipment system and power supply on-off operation control method |
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| US7369598B2 (en) * | 1997-05-16 | 2008-05-06 | Multispectral Solutions, Inc. | Ultra-wideband receiver and transmitter |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018197849A1 (en) * | 2017-04-28 | 2018-11-01 | Sureflap Ltd | Pet monitoring device |
| US11464205B2 (en) | 2017-04-28 | 2022-10-11 | Sureflap Ltd. | Pet monitoring device |
| CN110956796A (en) * | 2019-12-30 | 2020-04-03 | 广东工业大学 | Wireless switch device, equipment system and power supply on-off operation control method |
| CN110956796B (en) * | 2019-12-30 | 2021-05-11 | 广东工业大学 | Wireless switch device, equipment system and power supply on-off operation control method |
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| CN103532524B (en) | 2017-04-12 |
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