GB2267401B - Frequency synthesizer - Google Patents

Frequency synthesizer

Info

Publication number
GB2267401B
GB2267401B GB8515856A GB8515856A GB2267401B GB 2267401 B GB2267401 B GB 2267401B GB 8515856 A GB8515856 A GB 8515856A GB 8515856 A GB8515856 A GB 8515856A GB 2267401 B GB2267401 B GB 2267401B
Authority
GB
United Kingdom
Prior art keywords
frequency synthesizer
synthesizer
frequency
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.)
Expired - Fee Related
Application number
GB8515856A
Other languages
English (en)
Other versions
GB2267401A (en
Inventor
William J Tanis
Ning Hsing Lu
Alan Neil Schenberg
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.)
International Standard Electric Corp
Original Assignee
International Standard Electric Corp
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 International Standard Electric Corp filed Critical International Standard Electric Corp
Priority to GB8515856A priority Critical patent/GB2267401B/en
Priority to DE19853538858 priority patent/DE3538858A1/de
Publication of GB2267401A publication Critical patent/GB2267401A/en
Application granted granted Critical
Publication of GB2267401B publication Critical patent/GB2267401B/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
    • H03L7/08—Details of the phase-locked loop
    • H03L7/085—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal
    • H03L7/091—Details of the phase-locked loop concerning mainly the frequency- or phase-detection arrangement including the filtering or amplification of its output signal the phase or frequency detector using a sampling device
    • 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
    • H03L7/1974—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 for fractional frequency division
    • 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
    • H03L7/187—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 using means for coarse tuning the voltage controlled oscillator of the loop
GB8515856A 1985-06-22 1985-06-22 Frequency synthesizer Expired - Fee Related GB2267401B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
GB8515856A GB2267401B (en) 1985-06-22 1985-06-22 Frequency synthesizer
DE19853538858 DE3538858A1 (de) 1985-06-22 1985-11-02 PLL-Frequenzsynthesizer

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8515856A GB2267401B (en) 1985-06-22 1985-06-22 Frequency synthesizer
DE19853538858 DE3538858A1 (de) 1985-06-22 1985-11-02 PLL-Frequenzsynthesizer

Publications (2)

Publication Number Publication Date
GB2267401A GB2267401A (en) 1993-12-01
GB2267401B true GB2267401B (en) 1994-04-20

Family

ID=25837476

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8515856A Expired - Fee Related GB2267401B (en) 1985-06-22 1985-06-22 Frequency synthesizer

Country Status (2)

Country Link
DE (1) DE3538858A1 (de)
GB (1) GB2267401B (de)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6577269B2 (en) 2000-08-16 2003-06-10 Raytheon Company Radar detection method and apparatus
US6611227B1 (en) 2002-08-08 2003-08-26 Raytheon Company Automotive side object detection sensor blockage detection system and related techniques
US6675094B2 (en) 2000-09-08 2004-01-06 Raytheon Company Path prediction system and method

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08251026A (ja) * 1995-03-14 1996-09-27 Sony Corp 集積回路および送受信機
WO2009123957A1 (en) 2008-03-31 2009-10-08 Valeo Radar Systems, Inc. Automotive radar sensor blockage detection apparatus and method
US8618854B2 (en) 2010-10-15 2013-12-31 Qualcomm Incorporated Adaptive clock switching to capture asynchronous data within a phase-to-digital converter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3555446A (en) * 1969-01-17 1971-01-12 Dana Lab Inc Frequency synthesizer
US3582810A (en) * 1969-05-05 1971-06-01 Dana Lab Inc Frequency synthesizer system
US3959737A (en) * 1974-11-18 1976-05-25 Engelmann Microwave Co. Frequency synthesizer having fractional frequency divider in phase-locked loop
GB1560233A (en) * 1977-02-02 1980-01-30 Marconi Co Ltd Frequency synthesisers
GB2026268B (en) * 1978-07-22 1982-07-28 Racal Communcations Equipment Frequency synthesizers
GB2097206B (en) * 1981-04-21 1985-03-13 Marconi Co Ltd Frequency synthesisers

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6577269B2 (en) 2000-08-16 2003-06-10 Raytheon Company Radar detection method and apparatus
US6675094B2 (en) 2000-09-08 2004-01-06 Raytheon Company Path prediction system and method
US6611227B1 (en) 2002-08-08 2003-08-26 Raytheon Company Automotive side object detection sensor blockage detection system and related techniques

Also Published As

Publication number Publication date
GB2267401A (en) 1993-12-01
DE3538858A1 (de) 1994-05-26

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970622