DE69017129D1 - Frequenzsynthesizer mit gebrochenem teilverhältnis. - Google Patents

Frequenzsynthesizer mit gebrochenem teilverhältnis.

Info

Publication number
DE69017129D1
DE69017129D1 DE69017129T DE69017129T DE69017129D1 DE 69017129 D1 DE69017129 D1 DE 69017129D1 DE 69017129 T DE69017129 T DE 69017129T DE 69017129 T DE69017129 T DE 69017129T DE 69017129 D1 DE69017129 D1 DE 69017129D1
Authority
DE
Germany
Prior art keywords
frequency synthesizer
part ratio
broken part
broken
ratio
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
DE69017129T
Other languages
English (en)
Other versions
DE69017129T2 (de
Inventor
Rodney Lawton
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.)
Microsemi Semiconductor Ltd
Original Assignee
Plessey Semiconductors 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
Application filed by Plessey Semiconductors Ltd filed Critical Plessey Semiconductors Ltd
Application granted granted Critical
Publication of DE69017129D1 publication Critical patent/DE69017129D1/de
Publication of DE69017129T2 publication Critical patent/DE69017129T2/de
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
    • H03L7/16—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
DE69017129T 1989-03-31 1990-04-02 Frequenzsynthesizer mit gebrochenem teilverhältnis. Expired - Fee Related DE69017129T2 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB898907316A GB8907316D0 (en) 1989-03-31 1989-03-31 Fractional'n'synthesisers
PCT/GB1990/000491 WO1990012458A1 (en) 1989-03-31 1990-04-02 Frequency synthesisers with fractional division

Publications (2)

Publication Number Publication Date
DE69017129D1 true DE69017129D1 (de) 1995-03-30
DE69017129T2 DE69017129T2 (de) 1995-06-14

Family

ID=10654274

Family Applications (1)

Application Number Title Priority Date Filing Date
DE69017129T Expired - Fee Related DE69017129T2 (de) 1989-03-31 1990-04-02 Frequenzsynthesizer mit gebrochenem teilverhältnis.

Country Status (6)

Country Link
US (1) US5124670A (de)
EP (1) EP0419622B1 (de)
JP (1) JP2963761B2 (de)
DE (1) DE69017129T2 (de)
GB (1) GB8907316D0 (de)
WO (1) WO1990012458A1 (de)

Families Citing this family (25)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA2003428C (en) * 1989-11-21 1999-12-14 Thomas Atkin Denning Riley Frequency synthesizer
IT1252241B (it) * 1991-12-10 1995-06-05 Alcatel Italia Metodo e sistema per la riduzione del jitter di una struttura a pll (phase loked loop) caratterizzato da un rapporto razionale tra le le frequenze d`ingresso e di uscita.
US5389897A (en) * 1993-03-22 1995-02-14 Compaq Computer Corporation Method of and apparatus for limiting the free running frequency in multiplying phase-locked loop circuits
DE4336239A1 (de) * 1993-10-23 1995-04-27 Sel Alcatel Ag Schaltungsanordnung für einen Taktgenerator
US5495206A (en) * 1993-10-29 1996-02-27 Motorola, Inc. Fractional N frequency synthesis with residual error correction and method thereof
TW379293B (en) * 1994-04-01 2000-01-11 Ibm Apparatus and method for generating a clock in a microprocessor
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
US6047029A (en) * 1997-09-16 2000-04-04 Telefonaktiebolaget Lm Ericsson Post-filtered delta sigma for controlling a phase locked loop modulator
US6011815A (en) * 1997-09-16 2000-01-04 Telefonaktiebolaget Lm Ericsson Compensated ΔΣ controlled phase locked loop modulator
US6459309B2 (en) * 2000-03-10 2002-10-01 Koninklijke Philips Electronics N.V. Frequency converter enabling a non-integer division ratio to be programmed by means of a unique control word
US8155236B1 (en) 2002-06-21 2012-04-10 Netlogic Microsystems, Inc. Methods and apparatus for clock and data recovery using transmission lines
US6836526B2 (en) * 2003-02-25 2004-12-28 Agency For Science, Technology And Research Fractional-N synthesizer with two control words
US7038509B1 (en) 2003-10-27 2006-05-02 National Semiconductor Corporation Method and system for providing a phase-locked loop with reduced spurious tones
DE102004006995B4 (de) * 2004-02-12 2007-05-31 Infineon Technologies Ag Digitaler Phasenregelkreis für Sub-µ-Technologien
US7532697B1 (en) 2005-01-27 2009-05-12 Net Logic Microsystems, Inc. Methods and apparatus for clock and data recovery using a single source
US7432750B1 (en) 2005-12-07 2008-10-07 Netlogic Microsystems, Inc. Methods and apparatus for frequency synthesis with feedback interpolation
US7680227B2 (en) * 2006-03-02 2010-03-16 Broadcom Corporation Method and system for filter calibration using fractional-N frequency synthesized signals
US8423814B2 (en) 2010-03-19 2013-04-16 Netlogic Microsystems, Inc. Programmable drive strength in memory signaling
US8520744B2 (en) * 2010-03-19 2013-08-27 Netlogic Microsystems, Inc. Multi-value logic signaling in multi-functional circuits
US8638896B2 (en) * 2010-03-19 2014-01-28 Netlogic Microsystems, Inc. Repeate architecture with single clock multiplier unit
US8537949B1 (en) 2010-06-30 2013-09-17 Netlogic Microsystems, Inc. Systems, circuits and methods for filtering signals to compensate for channel effects
US8494377B1 (en) 2010-06-30 2013-07-23 Netlogic Microsystems, Inc. Systems, circuits and methods for conditioning signals for transmission on a physical medium
US8502575B2 (en) 2010-09-28 2013-08-06 Texas Instruments Incorporated Fractional-N PLL using multiple phase comparison frequencies to improve spurious signal performance
US8862648B2 (en) 2011-05-24 2014-10-14 Taiwan Semiconductor Manufacturing Company, Ltd. Fast filter calibration apparatus

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1986005046A1 (en) * 1985-02-21 1986-08-28 Plessey Overseas Limited Improvement in or relating to synthesisers
JPS62502230A (ja) * 1985-02-21 1987-08-27 シーメンス　プレッシー　エレクトロニック　システムズ　リミテッド 周波数合成器またはそれに関する改良

Also Published As

Publication number Publication date
DE69017129T2 (de) 1995-06-14
EP0419622B1 (de) 1995-02-22
JP2963761B2 (ja) 1999-10-18
JPH04503137A (ja) 1992-06-04
EP0419622A1 (de) 1991-04-03
WO1990012458A1 (en) 1990-10-18
US5124670A (en) 1992-06-23
GB8907316D0 (en) 1989-09-13

Similar Documents

Publication Publication Date Title
DE69020452D1 (de) Frequenzsynthesierer.
DE68916889D1 (de) Frequenzsynthesierer.
DE69017129D1 (de) Frequenzsynthesizer mit gebrochenem teilverhältnis.
DE59008177D1 (de) Frequenzsynthesizer.
DE3750810D1 (de) Frequenzsynthetisierer.
IT1238884B (it) Sintetizzatore di frequenza.
DE69032554D1 (de) Frequenzsynthesizer
DE68916069D1 (de) Automatische Synthesevorrichtung.
DE69016308D1 (de) Direkter digitaler Frequenzsynthetisierer.
DE69220460T2 (de) Rauscharmer Frequenzsynthesizer mit feinen Frequenzstufen
DE3877103D1 (de) Mikrowellen-oszillator.
DE58908588D1 (de) Frequenzsynthesegerät.
DE69026151D1 (de) Frequenzsynthesizer
DE68921897D1 (de) Hochfrequenz-Heizapparat.
DE69023917D1 (de) Oszillator.
DE69004770D1 (de) Frequenzmodulator.
DE69027462D1 (de) Oszillator
DE59001017D1 (de) Temperaturstabiler schwingkreisoszillator.
DE68912635D1 (de) Frequenzzähler.
DE68906062D1 (de) Mikrowellenschalter.
DE69018687D1 (de) Musiksynthesizer.
DE69030276D1 (de) Frequenzsynthetisierer
DE69017441D1 (de) Hochfrequenzheizgerät.
DE68909453D1 (de) Frequenzbestimmung.
DE68924922D1 (de) Oszillator.

Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8327 Change in the person/name/address of the patent owner

Owner name: MITEL SEMICONDUCTOR LTD., SWINDON, WILTSHIRE, GB

8339 Ceased/non-payment of the annual fee