JPS53152552U - - Google Patents
Info
- Publication number
- JPS53152552U JPS53152552U JP1978056925U JP5692578U JPS53152552U JP S53152552 U JPS53152552 U JP S53152552U JP 1978056925 U JP1978056925 U JP 1978056925U JP 5692578 U JP5692578 U JP 5692578U JP S53152552 U JPS53152552 U JP S53152552U
- Authority
- JP
- Japan
- 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
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
- H03L7/197—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
- H03L7/1976—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 using a phase accumulator for controlling the counter or frequency divider
- H03L7/1978—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 using a phase accumulator for controlling the counter or frequency divider using a cycle or pulse removing circuit
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US509577 | 1974-09-26 | ||
US509577A US3928813A (en) | 1974-09-26 | 1974-09-26 | Device for synthesizing frequencies which are rational multiples of a fundamental frequency |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS53152552U true JPS53152552U (ja) | 1978-12-01 |
JPS6010128Y2 JPS6010128Y2 (ja) | 1985-04-08 |
Family
ID=24027240
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50115418A Pending JPS5160148A (ja) | 1974-09-26 | 1975-09-23 | |
JP1978056925U Expired JPS6010128Y2 (ja) | 1974-09-26 | 1978-04-27 | 周波数合成装置 |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP50115418A Pending JPS5160148A (ja) | 1974-09-26 | 1975-09-23 |
Country Status (2)
Country | Link |
---|---|
US (1) | US3928813A (ja) |
JP (2) | JPS5160148A (ja) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011509568A (ja) * | 2007-12-20 | 2011-03-24 | クゥアルコム・インコーポレイテッド | 1つ又は複数のサイクル吸収クロック信号を生成又は利用する方法及び装置 |
Families Citing this family (49)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4057768A (en) * | 1976-11-11 | 1977-11-08 | International Business Machines Corporation | Variable increment phase locked loop circuit |
GB1560233A (en) * | 1977-02-02 | 1980-01-30 | Marconi Co Ltd | Frequency synthesisers |
GB1564375A (en) * | 1977-09-07 | 1980-04-10 | Marconi Co Ltd | Frequency generators |
US4310973A (en) * | 1977-12-01 | 1982-01-19 | Phillips Petroleum Co. | Drying polymer solutions |
JPS5486255A (en) * | 1977-12-21 | 1979-07-09 | Hitachi Ltd | Pll synthesizer |
GB2026268B (en) * | 1978-07-22 | 1982-07-28 | Racal Communcations Equipment | Frequency synthesizers |
US4303893A (en) * | 1979-03-05 | 1981-12-01 | Rca Corporation | Frequency synthesizer incorporating digital frequency translator |
GB2068185B (en) * | 1980-01-21 | 1983-06-22 | Philips Electronic Associated | Frequency synthesiser of the phase lock loop type |
US4454486A (en) * | 1981-11-02 | 1984-06-12 | Hewlett-Packard Company | Waveform synthesis using multiplexed parallel synthesizers |
US4468632A (en) * | 1981-11-30 | 1984-08-28 | Rca Corporation | Phase locked loop frequency synthesizer including fractional digital frequency divider |
US4573026A (en) * | 1984-02-29 | 1986-02-25 | Hewlett-Packard Company | FM Modulator phase-locked loop with FM calibration |
US4602225A (en) * | 1984-06-24 | 1986-07-22 | Hewlett Packard Company | Apparatus for frequency correction in a frequency synthesizer |
DE3667862D1 (de) * | 1985-01-31 | 1990-02-01 | Hewlett Packard Co | Schaltung zur messung der kenngroessen einer getesteten anordnung. |
JPS61135274U (ja) * | 1985-02-14 | 1986-08-23 | ||
US4679004A (en) * | 1985-09-03 | 1987-07-07 | Nec Corporation | Frequency synthesizer of a phase-locked type with a sampling circuit |
GB2191352A (en) * | 1986-06-06 | 1987-12-09 | Plessey Co Plc | Frequency synthesiser |
US4792768A (en) * | 1987-11-06 | 1988-12-20 | Hewlett-Packard Company | Fast frequency settling signal generator utilizing a frequency locked-loop |
US4810977A (en) * | 1987-12-22 | 1989-03-07 | Hewlett-Packard Company | Frequency modulation in phase-locked loops |
US4816774A (en) * | 1988-06-03 | 1989-03-28 | Motorola, Inc. | Frequency synthesizer with spur compensation |
US4918403A (en) * | 1988-06-03 | 1990-04-17 | Motorola, Inc. | Frequency synthesizer with spur compensation |
US4918405A (en) * | 1988-10-26 | 1990-04-17 | Hewlett-Packard Company | Signal generator utilizing a combined phase locked and frequency locked loop |
US4890071A (en) * | 1988-10-26 | 1989-12-26 | Hewlett-Packard Company | Signal generator utilizing a combined phase locked and frequency locked loop |
US5038117A (en) * | 1990-01-23 | 1991-08-06 | Hewlett-Packard Company | Multiple-modulator fractional-N divider |
US5056108A (en) * | 1990-04-04 | 1991-10-08 | Van Metre Lund | Communication system |
US5084681A (en) * | 1990-08-03 | 1992-01-28 | Hewlett-Packard Company | Digital synthesizer with phase memory |
US5070310A (en) * | 1990-08-31 | 1991-12-03 | Motorola, Inc. | Multiple latched accumulator fractional N synthesis |
US5093632A (en) * | 1990-08-31 | 1992-03-03 | Motorola, Inc. | Latched accumulator fractional n synthesis with residual error reduction |
JP3425976B2 (ja) * | 1991-10-17 | 2003-07-14 | 真作 森 | 周波数変換回路 |
US5224132A (en) * | 1992-01-17 | 1993-06-29 | Sciteq Electronics, Inc. | Programmable fractional-n frequency synthesizer |
US5533046A (en) * | 1992-10-08 | 1996-07-02 | Lund; Vanmetre | Spread spectrum communication system |
US5305362A (en) * | 1992-12-10 | 1994-04-19 | Hewlett-Packard Company | Spur reduction for multiple modulator based synthesis |
AU6339594A (en) * | 1993-06-09 | 1994-12-15 | Alcatel N.V. | Synchronized clock |
EP0630129A2 (de) * | 1993-06-09 | 1994-12-21 | Alcatel SEL Aktiengesellschaft | Verfahren zur Erzeugung eines synchronisierten Taktes mit einer Schaltungsanordnung für einen regelbaren Oszillator |
FR2709624B1 (fr) * | 1993-08-31 | 1995-11-17 | Sgs Thomson Microelectronics | Synthétiseur de fréquence. |
US5808493A (en) * | 1995-08-03 | 1998-09-15 | Anritsu Corporation | Rational frequency division device and frequency synthesizer using the same |
US5889436A (en) * | 1996-11-01 | 1999-03-30 | National Semiconductor Corporation | Phase locked loop fractional pulse swallowing frequency synthesizer |
US5920233A (en) * | 1996-11-18 | 1999-07-06 | Peregrine Semiconductor Corp. | Phase locked loop including a sampling circuit for reducing spurious side bands |
US5821816A (en) * | 1997-06-12 | 1998-10-13 | Hewlett-Packard Company | Integer division variable frequency synthesis apparatus and method |
US5777521A (en) * | 1997-08-12 | 1998-07-07 | Motorola Inc. | Parallel accumulator fractional-n frequency synthesizer |
US6084930A (en) * | 1998-09-16 | 2000-07-04 | Credence Systems Corporation | Triggered clock signal generator |
US6629256B1 (en) * | 2000-04-04 | 2003-09-30 | Texas Instruments Incorporated | Apparatus for and method of generating a clock from an available clock of arbitrary frequency |
US7805628B2 (en) * | 2001-04-02 | 2010-09-28 | Credence Systems Corporation | High resolution clock signal generator |
FR2845783A1 (fr) * | 2002-10-15 | 2004-04-16 | St Microelectronics Sa | Generateur d'horloge a consigne decimale et application d'un tel generateur d'horloge a un circuit uart |
US6998908B1 (en) | 2003-06-10 | 2006-02-14 | Rockwell Collins, Inc. | Adaptive interference cancellation receiving system using synthesizer phase accumulation |
US7038509B1 (en) | 2003-10-27 | 2006-05-02 | National Semiconductor Corporation | Method and system for providing a phase-locked loop with reduced spurious tones |
US7208990B1 (en) | 2006-04-28 | 2007-04-24 | Giga-Tronics, Inc. | Low noise microwave frequency synthesizer having loop accumulation |
US7215167B1 (en) | 2006-04-28 | 2007-05-08 | Giga-Tronics, Inc. | Low noise microwave frequency synthesizer having fast switching |
US7514970B2 (en) * | 2006-08-23 | 2009-04-07 | Giga-Tronics, Inc. | Decimal frequency synthesizer |
US8664988B1 (en) | 2012-11-14 | 2014-03-04 | Kairos Microsystems Corporation | Circuits and methods for clock generation using a flying-adder divider inside and optionally outside a phase locked loop |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS493447U (ja) * | 1972-04-11 | 1974-01-12 |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3185938A (en) * | 1962-02-27 | 1965-05-25 | Louis V Pelosi | Vfo control for generating stable discrete frequencies |
NL6702110A (ja) * | 1967-02-11 | 1968-08-12 | ||
US3872397A (en) * | 1973-11-07 | 1975-03-18 | King Radio Corp | Method and apparatus for decreasing channel spacing in digital frequency synthesizers |
-
1974
- 1974-09-26 US US509577A patent/US3928813A/en not_active Expired - Lifetime
-
1975
- 1975-09-23 JP JP50115418A patent/JPS5160148A/ja active Pending
-
1978
- 1978-04-27 JP JP1978056925U patent/JPS6010128Y2/ja not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS493447U (ja) * | 1972-04-11 | 1974-01-12 |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP2011509568A (ja) * | 2007-12-20 | 2011-03-24 | クゥアルコム・インコーポレイテッド | 1つ又は複数のサイクル吸収クロック信号を生成又は利用する方法及び装置 |
Also Published As
Publication number | Publication date |
---|---|
JPS5160148A (ja) | 1976-05-25 |
US3928813A (en) | 1975-12-23 |
JPS6010128Y2 (ja) | 1985-04-08 |