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
Application number
AT86305802T
Other languages
English (en)
Inventor
John Leslie Haine
Original Assignee
Libera Dev Ltd
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
Priority claimed from GB868613920A external-priority patent/GB8613920D0/en
Application filed by Libera Dev Ltd filed Critical Libera Dev Ltd
Application granted granted Critical
Publication of ATE77519T1 publication Critical patent/ATE77519T1/de

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)
AT86305802T 1985-08-02 1986-07-29 In phase verriegelter digitaler synthetisierer. ATE77519T1 (de)

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)

* Cited by examiner, † Cited by third party
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
US20110134964A1 (en) * 2008-08-21 2011-06-09 Nxp B.V. Frequency synthesizer and configuration for an enhanced frequency-hopping rate

Family Cites Families (2)

* Cited by examiner, † Cited by third party
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
US4629999A (en) * 1983-12-27 1986-12-16 North American Philips Corp. Phase-locked loop capable of generating a plurality of stable frequency signals

Also Published As

Publication number Publication date
EP0211594A3 (en) 1988-11-23
DE3685695D1 (de) 1992-07-23
EP0211594B1 (de) 1992-06-17
US4745371A (en) 1988-05-17
EP0211594A2 (de) 1987-02-25

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Legal Events

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