CA2198487A1 - Method of programming a frequency synthesizer and a radio having a frequency synthesizer - Google Patents

Method of programming a frequency synthesizer and a radio having a frequency synthesizer

Info

Publication number
CA2198487A1
CA2198487A1 CA2198487A CA2198487A CA2198487A1 CA 2198487 A1 CA2198487 A1 CA 2198487A1 CA 2198487 A CA2198487 A CA 2198487A CA 2198487 A CA2198487 A CA 2198487A CA 2198487 A1 CA2198487 A1 CA 2198487A1
Authority
CA
Canada
Prior art keywords
frequency synthesizer
radio
programming
output frequency
synthesizer
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
CA2198487A
Other languages
French (fr)
Other versions
CA2198487C (en
Inventor
John E. Eberhardt
Ronald L. Bane
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.)
Motorola Solutions Inc
Original Assignee
Motorola, Inc.
John E. Eberhardt
Ronald L. Bane
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Motorola, Inc., John E. Eberhardt, Ronald L. Bane filed Critical Motorola, Inc.
Publication of CA2198487A1 publication Critical patent/CA2198487A1/en
Application granted granted Critical
Publication of CA2198487C publication Critical patent/CA2198487C/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/183—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between fixed numbers or the frequency divider dividing by a fixed number
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
    • H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
    • H03J1/0008—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general using a central processing unit, e.g. a microprocessor
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00—Automatic control of frequency or phase; Synchronisation
    • H03L7/06—Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop
    • H03L7/197—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using a frequency divider or counter in the loop a time difference being used for locking the loop, the counter counting between numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)

Abstract

In order to program the output frequency of a synthesizer such as that of a two-way radio, first the reference oscillator (20) is warped or tuned substantially to one limit of its tuning range. The "N" divisor of the synthesizer divider (13) is then selected to produce a loop output close to the desired loop output frequency. The reference oscillator (20) is then tuned to provide the desired loop output frequency.
CA002198487A 1994-08-30 1995-08-18 Method of programming a frequency synthesizer and a radio having a frequency synthesizer Expired - Fee Related CA2198487C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US08/298,492 1994-08-30
US08/298,492 US5570066A (en) 1994-08-30 1994-08-30 Method of programming a frequency synthesizer
PCT/US1995/010554 WO1996007261A1 (en) 1994-08-30 1995-08-18 Method of programming a frequency synthesizer and a radio having a frequency synthesizer

Publications (2)

Publication Number Publication Date
CA2198487A1 true CA2198487A1 (en) 1996-03-07
CA2198487C CA2198487C (en) 1999-11-09

Family

ID=23150756

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002198487A Expired - Fee Related CA2198487C (en) 1994-08-30 1995-08-18 Method of programming a frequency synthesizer and a radio having a frequency synthesizer

Country Status (5)

Country Link
US (1) US5570066A (en)
EP (1) EP0777942A4 (en)
AU (1) AU3367895A (en)
CA (1) CA2198487C (en)
WO (1) WO1996007261A1 (en)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6249155B1 (en) 1997-01-21 2001-06-19 The Connor Winfield Corporation Frequency correction circuit for a periodic source such as a crystal oscillator
US5881374A (en) * 1997-01-31 1999-03-09 Telefonaktiebolaget L M Ericsson (Publ) Circuitry and method for detecting frequency deviation caused by aging of an oscillator
US5960405A (en) 1997-02-05 1999-09-28 Fox Enterprises, Inc. Worldwide marketing logistics network including strategically located centers for frequency programming crystal oscillators to customer specification
US5952890A (en) * 1997-02-05 1999-09-14 Fox Enterprises, Inc. Crystal oscillator programmable with frequency-defining parameters
CN1153352C (en) 1997-03-18 2004-06-09 皇家菲利浦电子有限公司 Receiver tuning system
WO1998042076A2 (en) * 1997-03-18 1998-09-24 Koninklijke Philips Electronics N.V. Receiver tuning system
EP0905910A3 (en) * 1997-09-25 2003-04-16 Siemens Aktiengesellschaft Process and apparatus for changing frequency in a multichannel radio system
DE19743275A1 (en) * 1997-09-30 1999-04-08 Siemens Ag Transmitter for generating a high-frequency transmission signal
FR2790790B1 (en) 1999-03-12 2001-04-27 Siemens Automotive Sa METHOD FOR DETERMINING THE PRESSURE IN THE FUEL INJECTION RAMP OF AN INTERNAL COMBUSTION ENGINE AND CORRESPONDING DEVICE
US6323739B1 (en) * 2000-01-18 2001-11-27 Denso Corporation Adjusting untrimmed VCO during operation of the oscillator
DE60115158T2 (en) 2000-06-28 2006-06-29 Thomson Licensing High-frequency oscillator
FR2811167A1 (en) * 2000-06-30 2002-01-04 Cit Alcatel FREQUENCY SYNTHESIS METHOD AND DEVICE USING A FRACTIONAL PHASE LOCKED LOOP
US7162002B2 (en) * 2002-03-01 2007-01-09 Broadcom Corporation Phase-interpolator based PLL frequency synthesizer
US7161443B2 (en) * 2004-09-30 2007-01-09 Broadcom Corporation Temperature compensated crystal oscillator
US7675369B2 (en) * 2006-06-12 2010-03-09 Honeywell International Inc. Frequency hopping oscillator circuit

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4320357A (en) * 1978-11-13 1982-03-16 Wulfsberg Paul G VHF-FM Frequency synthesizer
DE2856211A1 (en) * 1978-12-27 1980-07-03 Licentia Gmbh DIGITAL PHASE CONTROL WITH ONE AUXILIARY
JPS598966B2 (en) * 1979-04-10 1984-02-28 株式会社東芝 Television receiver control device
DE3122302A1 (en) * 1981-06-04 1982-12-23 Siemens AG, 1000 Berlin und 8000 München Oscillator circuit with a freely tunable oscillator and at least one crystal-stabilised oscillator
US4485404A (en) * 1982-09-01 1984-11-27 Rca Corporation Digital aft system which is activated during vertical retrace intervals
US4568888A (en) * 1983-11-08 1986-02-04 Trw Inc. PLL Fast frequency synthesizer with memories for coarse tuning and loop gain correction
EP0278140A1 (en) * 1987-02-12 1988-08-17 Hewlett-Packard Limited Clock signal generation
US4940950A (en) * 1988-08-12 1990-07-10 Tel-Instrument Electronics Corporation Frequency synthesis method and apparatus using approximation to provide closely spaced discrete frequencies over a wide range with rapid acquisition
US5152005A (en) * 1990-01-22 1992-09-29 Motorola, Inc. High resolution frequency synthesis
US4993048A (en) * 1990-04-18 1991-02-12 Unisys Corporation Self-clocking system
FR2680058B1 (en) * 1991-07-30 1994-01-28 Sgs Thomson Microelectronics Sa METHOD AND DEVICE FOR SYNCHRONIZING A SIGNAL.
US5267189A (en) * 1991-09-30 1993-11-30 Wilke William G Rational fraction synthesizer
JPH05259903A (en) * 1992-02-06 1993-10-08 Nec Eng Ltd Frequency synthesizer
US5301366A (en) * 1992-04-07 1994-04-05 Rockwell International Corporation High performance frequency tuning with low cost synthesizer
US5420545A (en) * 1993-03-10 1995-05-30 National Semiconductor Corporation Phase lock loop with selectable frequency switching time

Also Published As

Publication number Publication date
AU3367895A (en) 1996-03-22
EP0777942A1 (en) 1997-06-11
CA2198487C (en) 1999-11-09
US5570066A (en) 1996-10-29
EP0777942A4 (en) 1997-12-17
WO1996007261A1 (en) 1996-03-07

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Legal Events

Date Code Title Description
EEER Examination request
MKLA Lapsed