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 NZ33519899A priority Critical patent/NZ335198A/en
Priority to NZ507555A priority patent/NZ507555A/en
Priority to NZ507556A priority patent/NZ507556A/en
Priority to CN 00806208 priority patent/CN1347591A/en
Priority to AU38475/00A priority patent/AU3847500A/en
Priority to PCT/NZ2000/000054 priority patent/WO2000062428A2/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
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
NZ507556A NZ507556A (en) 1999-04-14 1999-04-14 Phase lock loop frequency synthesis controller includes digital modulator
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
PCT/NZ2000/000054 WO2000062428A2 (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
NZ33519899A NZ335198A (en) 1999-04-14 1999-04-14 Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer
NZ507556A NZ507556A (en) 1999-04-14 1999-04-14 Phase lock loop frequency synthesis controller includes digital modulator
NZ507555A NZ507555A (en) 1999-04-14 1999-04-14 Phase lock loop frequency synthesis with extended range of fractional divisors

Family Applications After (2)

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
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) NZ335198A (en)
WO (1) WO2000062428A2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2403085B (en) * 2002-03-28 2005-09-07 Kaben Res Inc 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 apparatus and signal processing method, delta sigma modulation fractional frequency division pll frequency synthesizer, wireless communication apparatus, and delta sigma modulation digital/analog 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

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

Similar Documents

Publication Publication Date Title
Riley et al. Delta-sigma modulation in fractional-N frequency synthesis
US7050525B2 (en) Frequency synthesizer apparatus equipped with fraction part control circuit, communication apparatus, frequency modulator apparatus, and frequency modulating method
MY116771A (en) A post-filtered (algebraic sum) for controlling a phase locked loop modulator.
US8120389B2 (en) Digital to frequency synthesis using flying-adder with dithered command input
CA2349478A1 (en) Direct digital frequency synthesizer and a hybrid frequency synthesizer combining a direct digital frequency synthesizer and a phase locked loop
EP0717491A3 (en) High precision, low phase noise synthesizer with vector modulator
DE60323488D1 (en) DIGITAL DELTA SIGMA MODULATOR IN A FRAKTIONAL N FREQUENCY SYNTHESIZER
NZ335198A (en) Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer
EP0701329A3 (en) Phase locked loop with low power feedback path and method of operation
TW370739B (en) Multiplication circuit
WO2003028218A1 (en) Fractional-n type frequency synthesizer
WO2002025803A3 (en) Complex valued delta sigma phase locked loop demodulator
JP2005506727A5 (en)
GB2320376A (en) Phase locked loop having a voltage controlled oscillator (VCO) with logic stage
ATE287139T1 (en) OSCILLATOR WITH MULTIPHASE COMPLEMENTARY OUTPUTS
US20020171412A1 (en) System and method for synchronizing multiple phase-lock loops or other synchronizable oscillators without using a master clock signal
JP2001237709A (en) Frequency synthesizing device, communication equipment, frequency modulation device and frequency modulation method
Hosseini et al. Architectures for maximum-sequence-length digital delta-sigma modulators
TW353830B (en) A voltage controlled oscillator
CA2075884A1 (en) Integrated frequency synthesizer circuit for transmit-and-receive operation
MY124523A (en) Fractional-n phase locked loop
US20050123078A1 (en) Suppression of interference in digital frequency synthesis, more particularly in a time reference of a navigation signal transmitting device
NZ335704A (en) Nested digital modulators for frequency synthesis
Donnelly et al. On the statistical properties of phase noise in Fractional-N frequency synthesizers using successive requantizers
Panah et al. Design of a Digital Sigma Delta Modulator with Separate Pipeline Lines for Fractional Frequency Synthesizers.

Legal Events

Date Code Title Description
RENW Renewal (renewal fees accepted)
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