NZ335198A - Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer - Google Patents

Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer

Info

Publication number
NZ335198A
NZ335198A NZ33519899A NZ33519899A NZ335198A NZ 335198 A NZ335198 A NZ 335198A NZ 33519899 A NZ33519899 A NZ 33519899A NZ 33519899 A NZ33519899 A NZ 33519899A NZ 335198 A NZ335198 A NZ 335198A
Authority
NZ
New Zealand
Prior art keywords
fractional
modulator
systhesizer
lock
delta modulators
Prior art date
Application number
NZ33519899A
Inventor
Stephen Ian Mann
Original Assignee
Tait Electronics 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 Tait Electronics Ltd filed Critical Tait Electronics Ltd
Priority to NZ507556A priority Critical patent/NZ507556A/en
Priority to NZ33519899A priority patent/NZ335198A/en
Priority to NZ507555A priority patent/NZ507555A/en
Priority to PCT/NZ2000/000054 priority patent/WO2000062428A2/en
Priority to CN 00806208 priority patent/CN1347591A/en
Priority to AU38475/00A priority patent/AU3847500A/en
Priority to EP20000917515 priority patent/EP1171954A4/en
Priority to CA002370254A priority patent/CA2370254A1/en
Publication of NZ335198A publication Critical patent/NZ335198A/en

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

Landscapes

  • Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
  • Compression, Expansion, Code Conversion, And Decoders (AREA)

Abstract

A composite modulator includes a cascade of Sigma-Delta modulators each as shown in figure 6 and connected (as shown in Figure 11) so that the output e of the latch 65 of each modulator is coupled to the input of the adder 61 of the following modulator. The output Y of the logic stage 62 of each modulator is coupled to the common combination stage 115 to produce an output of the composite modulator. The composite modulator is particularly suitable as a component of the fractional N feedback controller in the phase lock loop of a frequency synthesizer.
NZ33519899A 1999-04-14 1999-04-14 Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer NZ335198A (en)

Priority Applications (8)

Application Number Priority Date Filing Date Title
NZ507556A NZ507556A (en) 1999-04-14 1999-04-14 Phase lock loop frequency synthesis controller includes digital modulator
NZ33519899A NZ335198A (en) 1999-04-14 1999-04-14 Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer
NZ507555A NZ507555A (en) 1999-04-14 1999-04-14 Phase lock loop frequency synthesis with extended range of fractional divisors
PCT/NZ2000/000054 WO2000062428A2 (en) 1999-04-14 2000-04-14 Improvements relating to frequency synthesisers
CN 00806208 CN1347591A (en) 1999-04-14 2000-04-14 Improved frequency synthesisers
AU38475/00A AU3847500A (en) 1999-04-14 2000-04-14 Improvements relating to frequency synthesisers
EP20000917515 EP1171954A4 (en) 1999-04-14 2000-04-14 Improvements relating to frequency synthesisers
CA002370254A CA2370254A1 (en) 1999-04-14 2000-04-14 Improvements relating to frequency synthesisers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NZ33519899A NZ335198A (en) 1999-04-14 1999-04-14 Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer

Publications (1)

Publication Number Publication Date
NZ335198A true NZ335198A (en) 2000-11-24

Family

ID=19927215

Family Applications (3)

Application Number Title Priority Date Filing Date
NZ507556A NZ507556A (en) 1999-04-14 1999-04-14 Phase lock loop frequency synthesis controller includes digital modulator
NZ33519899A NZ335198A (en) 1999-04-14 1999-04-14 Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer
NZ507555A NZ507555A (en) 1999-04-14 1999-04-14 Phase lock loop frequency synthesis with extended range of fractional divisors

Family Applications Before (1)

Application Number Title Priority Date Filing Date
NZ507556A NZ507556A (en) 1999-04-14 1999-04-14 Phase lock loop frequency synthesis controller includes digital modulator

Family Applications After (1)

Application Number Title Priority Date Filing Date
NZ507555A NZ507555A (en) 1999-04-14 1999-04-14 Phase lock loop frequency synthesis with extended range of fractional divisors

Country Status (6)

Country Link
EP (1) EP1171954A4 (en)
CN (1) CN1347591A (en)
AU (1) AU3847500A (en)
CA (1) CA2370254A1 (en)
NZ (3) NZ507556A (en)
WO (1) WO2000062428A2 (en)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1643794A (en) * 2002-03-28 2005-07-20 凯奔研究公司 Phase error cancellation circuit and method for fractional frequency dividers and circuits incorporating same
US7072633B2 (en) * 2002-05-31 2006-07-04 Broadcom Corporation Double-conversion television tuner using a Delta-Sigma Fractional-N PLL
JP2004104228A (en) * 2002-09-05 2004-04-02 Matsushita Electric Ind Co Ltd Signal processing device and signal processing method, delta-sigma modulation type fractional frequency division PLL frequency synthesizer, wireless communication device, delta-sigma modulation type D / A converter
US6928127B2 (en) * 2003-03-11 2005-08-09 Atheros Communications, Inc. Frequency synthesizer with prescaler
GB2409383B (en) 2003-12-17 2006-06-21 Wolfson Ltd Clock synchroniser
WO2005096502A1 (en) 2004-04-02 2005-10-13 Kaben Research Inc. Multiple stage delta sigma modulators
CN1318212C (en) * 2004-07-30 2007-05-30 深圳市东方宇之光电子科技有限公司 Method and device for correcting geometric errors of images in laser phototypesetter
WO2011079471A1 (en) * 2009-12-31 2011-07-07 海能达通信股份有限公司 Method and system for optimizing fractional spurs
CN120165684A (en) * 2025-05-19 2025-06-17 兆易创新科技集团股份有限公司 Spread spectrum fractional frequency control circuit, fractional frequency phase-locked loop and chip

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2107142B (en) * 1981-10-07 1984-10-10 Marconi Co Ltd Frequency synthesisers
GB2140232B (en) * 1983-05-17 1986-10-29 Marconi Instruments Ltd Frequency synthesisers
GB2228840B (en) * 1989-03-04 1993-02-10 Racal Dana Instr Ltd Frequency synthesisers
US5038117A (en) * 1990-01-23 1991-08-06 Hewlett-Packard Company Multiple-modulator fractional-N divider
US5055802A (en) * 1990-04-30 1991-10-08 Motorola, Inc. Multiaccumulator sigma-delta fractional-n synthesis
US5093632A (en) * 1990-08-31 1992-03-03 Motorola, Inc. Latched accumulator fractional n synthesis with residual error reduction
JP2001502157A (en) * 1997-08-12 2001-02-13 コーニンクレッカ フィリップス エレクトロニクス エヌ ヴィ Multi-channel wireless device, wireless communication system, and fractional frequency division type frequency synthesizer
US6219397B1 (en) * 1998-03-20 2001-04-17 Samsung Electronics Co., Ltd. Low phase noise CMOS fractional-N frequency synthesizer for wireless communications
TW451558B (en) * 1999-06-29 2001-08-21 Ind Tech Res Inst Digitally controlled oscillator circuit of digital phase lock loop
JP3415574B2 (en) * 2000-08-10 2003-06-09 Ｎｅｃエレクトロニクス株式会社 PLL circuit
EP1193879A1 (en) * 2000-09-29 2002-04-03 Koninklijke Philips Electronics N.V. Low noise frequency synthesizer with rapid response and corresponding method for frequency synthesis

Also Published As

Publication number Publication date
NZ507555A (en) 2002-10-25
EP1171954A4 (en) 2002-10-30
AU3847500A (en) 2000-11-14
WO2000062428A2 (en) 2000-10-19
WO2000062428A3 (en) 2001-11-01
CN1347591A (en) 2002-05-01
NZ507556A (en) 2002-10-25
CA2370254A1 (en) 2000-10-19
EP1171954A2 (en) 2002-01-16

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Legal Events

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ERR Error or correction

Effective date: 20140528

Free format text: THE OWNER HAS BEEN CORRECTED TO 121164, TAIT LIMITED, 558 WAIRAKEI ROAD, BURNSIDE, CHRISTCHURCH 8053, NZ