ES2088715A1 - Sintesis fraccional-n de acumuladores enganchados con reduccion de error residual. - Google Patents
Sintesis fraccional-n de acumuladores enganchados con reduccion de error residual.Info
- Publication number
- ES2088715A1 ES2088715A1 ES09250025A ES9250025A ES2088715A1 ES 2088715 A1 ES2088715 A1 ES 2088715A1 ES 09250025 A ES09250025 A ES 09250025A ES 9250025 A ES9250025 A ES 9250025A ES 2088715 A1 ES2088715 A1 ES 2088715A1
- Authority
- ES
- Spain
- Prior art keywords
- accumulator
- latched
- residual error
- synthesis
- error reduction
- 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.)
- Granted
Links
- 230000015572 biosynthetic process Effects 0.000 title 1
- 238000003786 synthesis reaction Methods 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/09—Modifications of modulator for regulating the mean frequency
-
- 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)
- Synchronisation In Digital Transmission Systems (AREA)
- Reduction Or Emphasis Of Bandwidth Of Signals (AREA)
- Transceivers (AREA)
Abstract
SINTESIS FRACCIONAL-N DE ACUMULADORES ENGANCHADOS CON REDUCCION DE ERROR RESIDUAL PARA SER UTILIZADO EN TRANSCEPTORES DE RADIO DIGITALES. SE DESCRIBE UN SINTETIZADOR FRACCIONAL-N DE ACUMULADORES ENGANCHADOS CON REDUCCION DE ERROR RESIDUAL PARA SER UTILIZADO EN TRANSCEPTORES DE RADIO DIGITALES. EL DIVISOR DE FRECUENCIAS (103) DEL SINTETIZADOR VARIA EN EL TIEMPO POR LA SUMA DE LAS SECUENCIAS DIGITALES DE SALIDA DE ARRASTRE DE LOS ACUMULADORES QUE DAN POR RESULTADO INCREMENTOS DE FRECUENCIA EQUIVALENTES A UNA FRACCION DE LA FRECUENCIA DE REFERENCIA. LOS ACUMULADORES (615, 617) SE ENGANCHAN DE MANERA QUE, AL APARECER UN IMPULSO DE TIEMPO, EL DATO SE TRANSFIERE A TRAVES DE CADA ACUMULADOR A RAZON DE UN PASO DE IMPULSO DE TIEMPO CADA VEZ, DE MANERA QUE EL RETARDO A TRAVES DEL SISTEMA SEA EQUIVALENTE AL DE SOLAMENTE UN ACUMULADOR. LA SALIDA BLOQUEADA DEL ACUMULADOR DE SEGUNDO ORDEN SUPERIOR (619) SE RESTA DE LA SALIDA BLOQUEADA DEL ACUMULADOR DE ORDEN SUPERIOR (621) Y SE DIFERENCIA ANTES DE ALIMENTARSE AL FILTRO DE BUCLE (109).
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US07/576,333 US5093632A (en) | 1990-08-31 | 1990-08-31 | Latched accumulator fractional n synthesis with residual error reduction |
Publications (2)
Publication Number | Publication Date |
---|---|
ES2088715A1 true ES2088715A1 (es) | 1996-08-16 |
ES2088715B1 ES2088715B1 (es) | 1997-02-16 |
Family
ID=24304000
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
ES09250025A Expired - Lifetime ES2088715B1 (es) | 1990-08-31 | 1991-08-16 | Sintesis fraccional-n de acumuladores enganchados con reduccion de error residual. |
Country Status (19)
Country | Link |
---|---|
US (1) | US5093632A (es) |
JP (1) | JP2750639B2 (es) |
KR (1) | KR960012653B1 (es) |
AT (1) | AT402246B (es) |
AU (1) | AU646304B2 (es) |
BR (1) | BR9105884A (es) |
CA (1) | CA2065857C (es) |
DE (2) | DE4192071C2 (es) |
DK (1) | DK54992A (es) |
ES (1) | ES2088715B1 (es) |
FI (1) | FI108381B (es) |
FR (1) | FR2666463B1 (es) |
GB (1) | GB2253752B (es) |
HK (1) | HK36397A (es) |
IE (1) | IE67055B1 (es) |
IT (1) | IT1250770B (es) |
MX (1) | MX9100851A (es) |
SE (1) | SE469917B (es) |
WO (1) | WO1992004767A1 (es) |
Families Citing this family (36)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5161924A (en) * | 1989-08-31 | 1992-11-10 | Autocam Corporation | Method and tool for concentric backchamfering on a turning machine |
US5701598A (en) * | 1990-09-14 | 1997-12-23 | Atkinson; Noel D. | Scanning receiver with direct digital frequency synthesis and digital signal processing |
US5111162A (en) * | 1991-05-03 | 1992-05-05 | Motorola, Inc. | Digital frequency synthesizer having AFC and modulation applied to frequency divider |
JP2857292B2 (ja) * | 1991-12-18 | 1999-02-17 | ゼロックス コーポレイション | 2次元デジタルフィルタを実現するための装置 |
US5256981A (en) * | 1992-02-27 | 1993-10-26 | Hughes Aircraft Company | Digital error corrected fractional-N synthesizer and method |
US5436937A (en) * | 1993-02-01 | 1995-07-25 | Motorola, Inc. | Multi-mode digital phase lock loop |
US5347234A (en) * | 1993-03-26 | 1994-09-13 | International Business Machines Corp. | Digital voltage controlled oscillator |
US5337024A (en) * | 1993-06-22 | 1994-08-09 | Rockwell International Corporation | Phase locked loop frequency modulator using fractional division |
FR2709624B1 (fr) * | 1993-08-31 | 1995-11-17 | Sgs Thomson Microelectronics | Synthétiseur de fréquence. |
US5493700A (en) * | 1993-10-29 | 1996-02-20 | Motorola | Automatic frequency control apparatus |
US5495206A (en) * | 1993-10-29 | 1996-02-27 | Motorola, Inc. | Fractional N frequency synthesis with residual error correction and method thereof |
US5448763A (en) * | 1993-11-09 | 1995-09-05 | Motorola | Apparatus and method for operating a phase locked loop frequency synthesizer responsive to radio frequency channel spacing |
US5463351A (en) * | 1994-09-29 | 1995-10-31 | Motorola, Inc. | Nested digital phase lock loop |
JP3319677B2 (ja) * | 1995-08-08 | 2002-09-03 | 三菱電機株式会社 | 周波数シンセサイザ |
FI100285B (fi) * | 1995-12-11 | 1997-10-31 | Nokia Mobile Phones Ltd | Taajuudenmuodostuspiiri |
US5745848A (en) * | 1996-03-04 | 1998-04-28 | Motorola, Inc. | Method and apparatus for eliminating interference caused by spurious signals in a communication device |
US6032028A (en) * | 1996-04-12 | 2000-02-29 | Continentral Electronics Corporation | Radio transmitter apparatus and method |
US6011815A (en) * | 1997-09-16 | 2000-01-04 | Telefonaktiebolaget Lm Ericsson | Compensated ΔΣ controlled phase locked loop modulator |
US6047029A (en) * | 1997-09-16 | 2000-04-04 | Telefonaktiebolaget Lm Ericsson | Post-filtered delta sigma for controlling a phase locked loop modulator |
NZ335198A (en) * | 1999-04-14 | 2000-11-24 | Tait Electronics Ltd | Cascaded sigma-delta modulators for fractional-N-division phase-lock-loop frequency systhesizer |
US6581082B1 (en) * | 2000-02-22 | 2003-06-17 | Rockwell Collins | Reduced gate count differentiator |
US6747987B1 (en) | 2000-02-29 | 2004-06-08 | Motorola, Inc. | Transmit modulation circuit and method of operating a transmitter |
US6278333B1 (en) | 2000-02-29 | 2001-08-21 | Motorola, Inc. | Phase lock loop with dual state charge pump and method of operating the same |
US6564039B1 (en) | 2000-02-29 | 2003-05-13 | Motorola, Inc. | Frequency generation circuit and method of operating a tranceiver |
US6347233B1 (en) | 2000-05-12 | 2002-02-12 | Motorola, Inc. | Digital waveform generator apparatus and method therefor |
KR100346839B1 (ko) | 2000-10-10 | 2002-08-03 | 삼성전자 주식회사 | 시그마-델타 변조기를 이용한 분수-n 주파수 합성 장치및 그 방법 |
US6385276B1 (en) | 2001-06-12 | 2002-05-07 | Rf Micro Devices, Inc. | Dual-modulus prescaler |
US6779010B2 (en) | 2001-06-12 | 2004-08-17 | Rf Micro Devices, Inc. | Accumulator with programmable full-scale range |
US6693468B2 (en) | 2001-06-12 | 2004-02-17 | Rf Micro Devices, Inc. | Fractional-N synthesizer with improved noise performance |
US7003049B2 (en) * | 2001-06-12 | 2006-02-21 | Rf Micro Devices, Inc. | Fractional-N digital modulation with analog IQ interface |
US6448831B1 (en) | 2001-06-12 | 2002-09-10 | Rf Micro Devices, Inc. | True single-phase flip-flop |
US6710951B1 (en) * | 2001-10-31 | 2004-03-23 | Western Digital Technologies, Inc. | Phase locked loop employing a fractional frequency synthesizer as a variable oscillator |
DE60314020T2 (de) * | 2003-11-28 | 2007-09-13 | Fujitsu Ltd., Kawasaki | Sd-modulator einer pll-schaltung |
US7482885B2 (en) * | 2005-12-29 | 2009-01-27 | Orca Systems, Inc. | Method of frequency synthesis for fast switching |
US7519349B2 (en) * | 2006-02-17 | 2009-04-14 | Orca Systems, Inc. | Transceiver development in VHF/UHF/GSM/GPS/bluetooth/cordless telephones |
US8193845B2 (en) | 2010-07-06 | 2012-06-05 | Microchip Technology Incorporated | Binary-weighted delta-sigma fractional-N frequency synthesizer with digital-to-analog differentiators canceling quantization noise |
Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4204174A (en) * | 1978-07-22 | 1980-05-20 | Racal Communications Equipment Limited | Phase locked loop variable frequency generator |
US4609881A (en) * | 1983-05-17 | 1986-09-02 | Marconi Instruments Limited | Frequency synthesizers |
US4758802A (en) * | 1985-02-21 | 1988-07-19 | Plessey Overseas Limited | Fractional N synthesizer |
US4800342A (en) * | 1985-02-21 | 1989-01-24 | Plessey Overseas Limited | Frequency synthesizer of the fractional type |
US4816774A (en) * | 1988-06-03 | 1989-03-28 | Motorola, Inc. | Frequency synthesizer with spur compensation |
Family Cites Families (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3882403A (en) * | 1974-03-14 | 1975-05-06 | Gen Dynamics Corp | Digital frequency synthesizer |
US3928813A (en) * | 1974-09-26 | 1975-12-23 | Hewlett Packard Co | Device for synthesizing frequencies which are rational multiples of a fundamental frequency |
GB1560233A (en) * | 1977-02-02 | 1980-01-30 | Marconi Co Ltd | Frequency synthesisers |
GB2091960B (en) * | 1981-01-27 | 1985-06-19 | Int Standard Electric Corp | High speed frequency synthesizer |
FR2511564A1 (fr) * | 1981-08-17 | 1983-02-18 | Thomson Csf | Synthetiseur de frequences a division fractionnaire, utilise pour une modulation angulaire numerique |
FR2557401B1 (fr) * | 1983-12-27 | 1986-01-24 | Thomson Csf | Synthetiseur de frequences a division fractionnaire, a faible gigue de phase et utilisation de ce synthetiseur |
DE3544371A1 (de) * | 1985-12-14 | 1987-06-19 | Wandel & Goltermann | Generator mit digitaler frequenzeinstellung |
US4815018A (en) * | 1985-12-24 | 1989-03-21 | Hughes Aircraft Company | Spurless fractional divider direct digital frequency synthesizer and method |
US4810977A (en) * | 1987-12-22 | 1989-03-07 | Hewlett-Packard Company | Frequency modulation in phase-locked loops |
AU617455B2 (en) * | 1988-05-06 | 1991-11-28 | Alcatel N.V. | A digital frequency synthesizer |
DE3826006C1 (es) * | 1988-07-30 | 1989-10-12 | Wandel & Goltermann Gmbh & Co, 7412 Eningen, De | |
US4918405A (en) * | 1988-10-26 | 1990-04-17 | Hewlett-Packard Company | Signal generator utilizing a combined phase locked and frequency locked loop |
GB2228840B (en) * | 1989-03-04 | 1993-02-10 | Racal Dana Instr Ltd | Frequency synthesisers |
US5055800A (en) * | 1990-04-30 | 1991-10-08 | Motorola, Inc. | Fractional n/m synthesis |
US5055802A (en) * | 1990-04-30 | 1991-10-08 | Motorola, Inc. | Multiaccumulator sigma-delta fractional-n synthesis |
-
1990
- 1990-08-31 US US07/576,333 patent/US5093632A/en not_active Expired - Lifetime
-
1991
- 1991-08-16 DE DE4192071A patent/DE4192071C2/de not_active Expired - Lifetime
- 1991-08-16 BR BR919105884A patent/BR9105884A/pt not_active Application Discontinuation
- 1991-08-16 WO PCT/US1991/005924 patent/WO1992004767A1/en not_active IP Right Cessation
- 1991-08-16 KR KR1019920700996A patent/KR960012653B1/ko not_active IP Right Cessation
- 1991-08-16 AT AT0900591A patent/AT402246B/de not_active IP Right Cessation
- 1991-08-16 DE DE19914192071 patent/DE4192071T/de active Pending
- 1991-08-16 ES ES09250025A patent/ES2088715B1/es not_active Expired - Lifetime
- 1991-08-16 JP JP3516633A patent/JP2750639B2/ja not_active Expired - Lifetime
- 1991-08-16 CA CA002065857A patent/CA2065857C/en not_active Expired - Fee Related
- 1991-08-16 AU AU87109/91A patent/AU646304B2/en not_active Ceased
- 1991-08-28 MX MX9100851A patent/MX9100851A/es unknown
- 1991-08-30 IT ITRM910652A patent/IT1250770B/it active IP Right Grant
- 1991-08-30 FR FR9110806A patent/FR2666463B1/fr not_active Expired - Fee Related
- 1991-08-30 IE IE306091A patent/IE67055B1/en not_active IP Right Cessation
-
1992
- 1992-04-28 DK DK054992A patent/DK54992A/da not_active Application Discontinuation
- 1992-04-29 GB GB9209236A patent/GB2253752B/en not_active Expired - Lifetime
- 1992-04-29 SE SE9201351A patent/SE469917B/sv not_active IP Right Cessation
- 1992-04-30 FI FI921959A patent/FI108381B/fi active
-
1997
- 1997-03-27 HK HK36397A patent/HK36397A/xx not_active IP Right Cessation
Patent Citations (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4204174A (en) * | 1978-07-22 | 1980-05-20 | Racal Communications Equipment Limited | Phase locked loop variable frequency generator |
US4609881A (en) * | 1983-05-17 | 1986-09-02 | Marconi Instruments Limited | Frequency synthesizers |
US4758802A (en) * | 1985-02-21 | 1988-07-19 | Plessey Overseas Limited | Fractional N synthesizer |
US4800342A (en) * | 1985-02-21 | 1989-01-24 | Plessey Overseas Limited | Frequency synthesizer of the fractional type |
US4816774A (en) * | 1988-06-03 | 1989-03-28 | Motorola, Inc. | Frequency synthesizer with spur compensation |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
EC2A | Search report published |
Date of ref document: 19960816 Kind code of ref document: A1 Effective date: 19960816 |