NZ507555A - Phase lock loop frequency synthesis with extended range of fractional divisors - Google Patents
Phase lock loop frequency synthesis with extended range of fractional divisorsInfo
- Publication number
- NZ507555A NZ507555A NZ507555A NZ50755599A NZ507555A NZ 507555 A NZ507555 A NZ 507555A NZ 507555 A NZ507555 A NZ 507555A NZ 50755599 A NZ50755599 A NZ 50755599A NZ 507555 A NZ507555 A NZ 507555A
- Authority
- NZ
- New Zealand
- Prior art keywords
- fractional
- phase lock
- lock loop
- extended range
- frequency synthesis
- Prior art date
Links
- 230000015572 biosynthetic process Effects 0.000 title 1
- 238000003786 synthesis reaction Methods 0.000 title 1
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 frequency synthesizer includes a phase-lock-loop with a programmable frequency divider and a controller that determines the average fractional division values for the divider. Each division value includes selected integer and fractional parts. The range of variation of the selected fractional part is not limited to {0,1}. The fractional part may be negative and may have an absolute value greater than 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NZ507555A NZ507555A (en) | 1999-04-14 | 1999-04-14 | Phase lock loop frequency synthesis with extended range of fractional divisors |
Applications Claiming Priority (2)
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 |
Publications (1)
Publication Number | Publication Date |
---|---|
NZ507555A true NZ507555A (en) | 2002-10-25 |
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 (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 |
NZ33519899A NZ335198A (en) | 1999-04-14 | 1999-04-14 | Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer |
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 (8)
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)
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 |
CN1241325A (en) * | 1997-08-12 | 2000-01-12 | 皇家菲利浦电子有限公司 | Multichannel radio device, radio communication system, and fractional division 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 |
-
1999
- 1999-04-14 NZ NZ507556A patent/NZ507556A/en unknown
- 1999-04-14 NZ NZ33519899A patent/NZ335198A/en unknown
- 1999-04-14 NZ NZ507555A patent/NZ507555A/en unknown
-
2000
- 2000-04-14 EP EP20000917515 patent/EP1171954A4/en not_active Withdrawn
- 2000-04-14 AU AU38475/00A patent/AU3847500A/en not_active Abandoned
- 2000-04-14 CA CA002370254A patent/CA2370254A1/en not_active Abandoned
- 2000-04-14 CN CN 00806208 patent/CN1347591A/en active Pending
- 2000-04-14 WO PCT/NZ2000/000054 patent/WO2000062428A2/en not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
NZ335198A (en) | 2000-11-24 |
AU3847500A (en) | 2000-11-14 |
NZ507556A (en) | 2002-10-25 |
WO2000062428A2 (en) | 2000-10-19 |
CA2370254A1 (en) | 2000-10-19 |
EP1171954A2 (en) | 2002-01-16 |
CN1347591A (en) | 2002-05-01 |
WO2000062428A3 (en) | 2001-11-01 |
EP1171954A4 (en) | 2002-10-30 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PSEA | Patent sealed | ||
RENW | Renewal (renewal fees accepted) | ||
ERR | Error or correction |
Free format text: THE OWNER HAS BEEN CORRECTED TO 121164, TAIT LIMITED, 558 WAIRAKEI ROAD, BURNSIDE, CHRISTCHURCH 8053, NZ Effective date: 20140528 |