GB2267401B - Frequency synthesizer - Google Patents
Frequency synthesizerInfo
- 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
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
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)
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)
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)
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 |
-
1985
- 1985-06-22 GB GB8515856A patent/GB2267401B/en not_active Expired - Fee Related
- 1985-11-02 DE DE19853538858 patent/DE3538858A1/de not_active Ceased
Cited By (3)
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 |