ATE77519T1 - In phase verriegelter digitaler synthetisierer. - Google Patents
In phase verriegelter digitaler synthetisierer.Info
- Publication number
- ATE77519T1 ATE77519T1 AT86305802T AT86305802T ATE77519T1 AT E77519 T1 ATE77519 T1 AT E77519T1 AT 86305802 T AT86305802 T AT 86305802T AT 86305802 T AT86305802 T AT 86305802T AT E77519 T1 ATE77519 T1 AT E77519T1
- Authority
- AT
- Austria
- Prior art keywords
- phase
- loop
- division ratio
- voltage
- controlled oscillator
- Prior art date
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
- 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
-
- 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
- H03L7/1972—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 reducing the locking time interval
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
- Oscillators With Electromechanical Resonators (AREA)
- Signal Processing For Digital Recording And Reproducing (AREA)
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB8519521 | 1985-08-02 | ||
GB868613920A GB8613920D0 (en) | 1986-06-07 | 1986-06-07 | Phase-locked digital synthesiser |
EP86305802A EP0211594B1 (de) | 1985-08-02 | 1986-07-29 | In Phase verriegelter digitaler Synthetisierer |
Publications (1)
Publication Number | Publication Date |
---|---|
ATE77519T1 true ATE77519T1 (de) | 1992-07-15 |
Family
ID=26289598
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AT86305802T ATE77519T1 (de) | 1985-08-02 | 1986-07-29 | In phase verriegelter digitaler synthetisierer. |
Country Status (4)
Country | Link |
---|---|
US (1) | US4745371A (de) |
EP (1) | EP0211594B1 (de) |
AT (1) | ATE77519T1 (de) |
DE (1) | DE3685695D1 (de) |
Families Citing this family (28)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CA1290407C (en) * | 1986-12-23 | 1991-10-08 | Shigeki Saito | Frequency synthesizer |
US4926260A (en) * | 1988-06-02 | 1990-05-15 | U.S. Philips Corporation | Video signal processing circuit |
US4885553A (en) * | 1988-11-30 | 1989-12-05 | Motorola, Inc. | Continuously adaptive phase locked loop synthesizer |
US4920320A (en) * | 1988-12-19 | 1990-04-24 | Motorola, Inc. | Phase locked loop with optimally controlled bandwidth |
US4951004A (en) * | 1989-03-17 | 1990-08-21 | John Fluke Mfg. Co., Inc. | Coherent direct digital synthesizer |
JPH07101865B2 (ja) * | 1989-06-23 | 1995-11-01 | 日本電気株式会社 | 無線送信装置の周波数設定方式 |
US5081705A (en) * | 1989-06-29 | 1992-01-14 | Rockwell International Corp. | Communication system with external reference signal processing capability |
US4987373A (en) * | 1989-09-01 | 1991-01-22 | Chrontel, Inc. | Monolithic phase-locked loop |
US4992743A (en) * | 1989-11-15 | 1991-02-12 | John Fluke Mfg. Co., Inc. | Dual-tone direct digital synthesizer |
JP2841693B2 (ja) * | 1990-04-19 | 1998-12-24 | 日本電気株式会社 | Pll周波数シンセサイザ |
JP2798142B2 (ja) * | 1990-06-15 | 1998-09-17 | 三菱電機株式会社 | 周波数シンセサイザ |
JP2748676B2 (ja) * | 1990-09-19 | 1998-05-13 | 日本電気株式会社 | Pll回路 |
FI87033C (fi) * | 1990-10-05 | 1992-11-10 | Nokia Mobile Phones Ltd | Foerfarande foer att arrangera styrningar av kopplingstyp i en radiotelefon |
US5146187A (en) * | 1991-07-01 | 1992-09-08 | Ericsson Ge Mobile Communications Inc. | Synthesizer loop filter for scanning receivers |
US5371480A (en) * | 1992-12-04 | 1994-12-06 | Telefonaktiebolaget L M Ericsson | Step controlled signal generator |
JP2875472B2 (ja) * | 1994-01-19 | 1999-03-31 | 日本無線株式会社 | Pllシンセサイザ及びその制御方法 |
JP2616582B2 (ja) * | 1994-05-09 | 1997-06-04 | 日本電気株式会社 | Pll周波数シンセサイザ |
FR2734967B1 (fr) * | 1995-05-31 | 1997-07-04 | Cit Alcatel | Procede de verrouillage de phase et boucle appliquant ce procede |
US6081143A (en) * | 1997-09-26 | 2000-06-27 | Sun Microsystems, Inc. | Frequency comparison and generation in an integrated processor |
US6112068A (en) * | 1997-12-22 | 2000-08-29 | Texas Instruments Incorporated | Phase-locked loop circuit with switchable outputs for multiple loop filters |
JP3851064B2 (ja) | 1999-06-30 | 2006-11-29 | インフィネオン テクノロジース アクチエンゲゼルシャフト | Pllシンセサイザ |
US6456887B1 (en) * | 2000-12-14 | 2002-09-24 | Medtronic, Inc. | Low energy consumption RF telemetry control for an implantable medical device |
JP2003087116A (ja) * | 2001-09-14 | 2003-03-20 | Nec Saitama Ltd | Pllシンセサイザ |
TWI224428B (en) * | 2002-07-19 | 2004-11-21 | Sun Microsystems Inc | Loop filter capacitor leakage current control |
US8412116B1 (en) * | 2002-12-20 | 2013-04-02 | Qualcomm Incorporated | Wireless transceiver |
DE102004030841A1 (de) * | 2004-06-25 | 2006-01-26 | Siemens Ag | Verringerung der Einschwingzeit und Kompensation von Phasenfeldern von auf Phasenregelkreisen basierenden Frequenzsynthesizern |
DE102004047871A1 (de) * | 2004-10-01 | 2006-04-06 | Deutsche Thomson-Brandt Gmbh | Signal-Eingangsschaltung |
WO2010020911A1 (en) * | 2008-08-21 | 2010-02-25 | Nxp B.V. | Frequency synthesizer and configuration for an enhanced frequency-hopping rate |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3729688A (en) * | 1971-12-15 | 1973-04-24 | Motorola Inc | Oscillator with switchable filter control voltage input for rapidly switching to discrete frequency outputs |
JPS5810935A (ja) * | 1981-07-13 | 1983-01-21 | Sharp Corp | Pllシンセサイザチユ−ナ用ロ−パスフイルタ |
US4629999A (en) * | 1983-12-27 | 1986-12-16 | North American Philips Corp. | Phase-locked loop capable of generating a plurality of stable frequency signals |
JPS6016731A (ja) * | 1984-06-21 | 1985-01-28 | Matsushita Electric Ind Co Ltd | Pll回路装置 |
-
1986
- 1986-07-23 US US06/888,798 patent/US4745371A/en not_active Expired - Fee Related
- 1986-07-29 EP EP86305802A patent/EP0211594B1/de not_active Expired - Lifetime
- 1986-07-29 DE DE8686305802T patent/DE3685695D1/de not_active Expired - Lifetime
- 1986-07-29 AT AT86305802T patent/ATE77519T1/de not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
EP0211594A2 (de) | 1987-02-25 |
DE3685695D1 (de) | 1992-07-23 |
US4745371A (en) | 1988-05-17 |
EP0211594A3 (en) | 1988-11-23 |
EP0211594B1 (de) | 1992-06-17 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
RER | Ceased as to paragraph 5 lit. 3 law introducing patent treaties |