RU98108892A - SYNTHESIS OF Fractional Coherent Frequencies With Phase Synchronization - Google Patents
SYNTHESIS OF Fractional Coherent Frequencies With Phase SynchronizationInfo
- Publication number
- RU98108892A RU98108892A RU98108892/09A RU98108892A RU98108892A RU 98108892 A RU98108892 A RU 98108892A RU 98108892/09 A RU98108892/09 A RU 98108892/09A RU 98108892 A RU98108892 A RU 98108892A RU 98108892 A RU98108892 A RU 98108892A
- Authority
- RU
- Russia
- Prior art keywords
- modulo
- counter
- increment
- divider
- output
- Prior art date
Links
- 230000015572 biosynthetic process Effects 0.000 title 1
- 230000001427 coherent Effects 0.000 title 1
- 238000003786 synthesis reaction Methods 0.000 title 1
- 230000002194 synthesizing Effects 0.000 title 1
- 238000009825 accumulation Methods 0.000 claims 9
- 238000006243 chemical reaction Methods 0.000 claims 6
- 241001442055 Vipera berus Species 0.000 claims 2
- 238000001514 detection method Methods 0.000 claims 2
- 230000001276 controlling effect Effects 0.000 claims 1
- 230000000875 corresponding Effects 0.000 claims 1
- 238000009987 spinning Methods 0.000 claims 1
Claims (9)
для пересчета по модулю 4 логическому уравнению
для пересчета по модулю 5 логическому уравнению
где n представляет собой количество периодов генератора опорной частоты, начиная с произвольного момента, К представляет собой численное значение накопленного приращения, MSB(x) представляет собой старший разряд х, ISB(x) представляет собой промежуточный разряд х, в предположении, что он закодирован тремя разрядами, a LSB(x) представляет собой младший разряд х.5. The multiple fractional frequency synthesizer according to claim 4, having a counter-divider with three consecutive integer division coefficients N, N + 1 and N + 2 in the phase-locked loop and serving to control the instantaneous value of the division coefficient of the counter-divider instantaneous value control circuit division factor, which performs in parallel with the speed of the reference frequency generator three digital summation operations of three relatively simple values modulo 3, 4 and 5 with different integer increments less the conversion values are modulo, while the multiplier and comparator of each individual circuit for implicit digital summation and for detecting overflows of the calculated summation are formed by a combination of logic circuits corresponding to the logical equation for modulo 3 conversion
to convert modulo 4 to a logical equation
for conversion modulo 5 logical equation
where n is the number of periods of the reference frequency generator, starting from an arbitrary moment, K is the numerical value of the accumulated increment, MSB (x) is the highest bit x, ISB (x) is the intermediate bit x, under the assumption that it is encoded by three bits, a LSB (x) is the least significant bit of x.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR9705625A FR2763196B1 (en) | 1997-05-07 | 1997-05-07 | CONSISTENT FREQUENCY SYNTHESIZER WITH PHASE LOOP AND NOT FRACTIONAL |
FR9705625 | 1997-05-07 |
Publications (2)
Publication Number | Publication Date |
---|---|
RU98108892A true RU98108892A (en) | 2000-03-20 |
RU2208904C2 RU2208904C2 (en) | 2003-07-20 |
Family
ID=9506665
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
RU98108892/09A RU2208904C2 (en) | 1997-05-07 | 1998-05-06 | Phase-synchronization fractional coherent- frequency synthesizer |
Country Status (7)
Country | Link |
---|---|
US (1) | US6107843A (en) |
EP (1) | EP0877487B1 (en) |
JP (1) | JPH10327071A (en) |
DE (1) | DE69800197T2 (en) |
FR (1) | FR2763196B1 (en) |
IL (1) | IL124288A (en) |
RU (1) | RU2208904C2 (en) |
Families Citing this family (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH10247851A (en) * | 1997-03-04 | 1998-09-14 | Hitachi Denshi Ltd | Frequency synthesizer of fractional-n type and repeater using the same |
FR2785109B1 (en) | 1998-10-23 | 2001-01-19 | Thomson Csf | COMPENSATION FOR THE DELAY OF THE ANALOGUE DIGITAL CONVERTER IN SIGMA DELTA MODULATORS |
DE10016853C2 (en) * | 1999-04-02 | 2003-04-30 | Advantest Corp | Delay clock generating apparatus |
FR2793972B1 (en) | 1999-05-21 | 2001-08-10 | Thomson Csf | CONSISTENT DIVISION DIGITAL SYNTHESIZER |
FR2807587B1 (en) * | 2000-04-11 | 2002-06-28 | Thomson Csf | FRACTIONAL SYNTHESIZER FEATURING PHASE Jitter Compensation |
EP1160659B1 (en) * | 2000-06-02 | 2005-04-27 | STMicroelectronics S.r.l. | Frequency multiplier circuit and method using above circuit for a period time division in subperiods, for a brushless motor |
US6356127B1 (en) * | 2001-01-10 | 2002-03-12 | Adc Telecommunications, Inc. | Phase locked loop |
US6556086B2 (en) * | 2001-05-31 | 2003-04-29 | Analog Devices, Inc. | Fractional-N synthesizer and method of synchronization of the output phase |
US7343387B2 (en) * | 2002-02-26 | 2008-03-11 | Teradyne, Inc. | Algorithm for configuring clocking system |
DE10234993B4 (en) * | 2002-07-31 | 2006-02-23 | Advanced Micro Devices, Inc., Sunnyvale | Accumulator controlled digital frequency divider in a phase-locked loop |
WO2004034586A2 (en) * | 2002-10-08 | 2004-04-22 | M/A-Com, Inc. | Methods and apparatus for signal modification in a fractional-n phase locked loop system |
US7203262B2 (en) | 2003-05-13 | 2007-04-10 | M/A-Com, Inc. | Methods and apparatus for signal modification in a fractional-N phase locked loop system |
US20050036580A1 (en) * | 2003-08-12 | 2005-02-17 | Rana Ram Singh | Programmable phase-locked loop fractional-N frequency synthesizer |
JP3870942B2 (en) * | 2003-10-20 | 2007-01-24 | ソニー株式会社 | Data transmission system and data transmission apparatus |
US7282967B2 (en) * | 2003-10-30 | 2007-10-16 | Avago Technologies General Ip ( Singapore) Pte. Ltd. | Fixed frequency clock output having a variable high frequency input clock and an unrelated fixed frequency reference signal |
JP4064338B2 (en) * | 2003-12-10 | 2008-03-19 | 松下電器産業株式会社 | Delta-sigma fractional frequency division PLL synthesizer |
EP1706922B1 (en) * | 2003-12-18 | 2011-08-24 | Yeda Research And Development Co., Ltd. | Laser resonator cavity configuration |
FR2880219B1 (en) * | 2004-12-23 | 2007-02-23 | Thales Sa | METHOD AND SYSTEM FOR DIGITAL RADIOCOMMUNICATION, IN PARTICULAR FOR MOBILE SOIL STATIONS |
US7844650B2 (en) * | 2006-05-26 | 2010-11-30 | Pmc Sierra Inc. | Pulse output direct digital synthesis circuit |
US7956696B2 (en) * | 2008-09-19 | 2011-06-07 | Altera Corporation | Techniques for generating fractional clock signals |
EP2613442B1 (en) | 2012-01-06 | 2015-05-13 | u-blox AG | A method for determining an offset term for a fractional-N PLL synthesizer signal, a synthesizer for carrying out the method, a signal processing device and a GNSS receiver |
US8901974B2 (en) * | 2013-01-30 | 2014-12-02 | Texas Instruments Deutschland Gmbh | Phase locked loop and method for operating the same |
US9479185B2 (en) * | 2014-12-12 | 2016-10-25 | Bae Systems Information And Electronic Systems Integration Inc. | Modified delta-sigma modulator for phase coherent frequency synthesis applications |
FR3032072B1 (en) | 2015-01-23 | 2018-05-11 | Commissariat A L'energie Atomique Et Aux Energies Alternatives | FREQUENCY SYNTHESIS DEVICE WITH RETROACTIVE LOOP |
RU2602991C1 (en) * | 2015-10-14 | 2016-11-20 | Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Московский государственный технический университет имени Н.Э. Баумана" (МГТУ им. Н.Э. Баумана) | High-speed frequency synthesiser |
FR3098664B1 (en) | 2019-07-08 | 2021-07-23 | Commissariat Energie Atomique | Feedback loop frequency synthesis device |
EP3855625A1 (en) | 2020-01-27 | 2021-07-28 | Stichting IMEC Nederland | All-digital phase locked loop and operation method thereof |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2426358A1 (en) * | 1978-05-17 | 1979-12-14 | Trt Telecom Radio Electr | DIRECT DIVISION STEP AFTER FREQUENCY SYNTHESIZER |
US4468632A (en) * | 1981-11-30 | 1984-08-28 | Rca Corporation | Phase locked loop frequency synthesizer including fractional digital frequency divider |
FR2587569B1 (en) * | 1985-09-17 | 1991-09-20 | Thomson Csf | FAST VARIATION FREQUENCY GENERATOR |
US5018170A (en) * | 1989-11-21 | 1991-05-21 | Unisys Corporation | Variable data rate clock synthesizer |
US5224132A (en) * | 1992-01-17 | 1993-06-29 | Sciteq Electronics, Inc. | Programmable fractional-n frequency synthesizer |
US5256981A (en) * | 1992-02-27 | 1993-10-26 | Hughes Aircraft Company | Digital error corrected fractional-N synthesizer and method |
-
1997
- 1997-05-07 FR FR9705625A patent/FR2763196B1/en not_active Expired - Fee Related
-
1998
- 1998-04-29 IL IL12428898A patent/IL124288A/en not_active IP Right Cessation
- 1998-04-30 US US09/070,157 patent/US6107843A/en not_active Expired - Fee Related
- 1998-05-05 DE DE69800197T patent/DE69800197T2/en not_active Expired - Lifetime
- 1998-05-05 EP EP98401089A patent/EP0877487B1/en not_active Expired - Lifetime
- 1998-05-06 RU RU98108892/09A patent/RU2208904C2/en not_active IP Right Cessation
- 1998-05-07 JP JP10139219A patent/JPH10327071A/en not_active Withdrawn
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