TWI339953B - Modulus modulator and dynamic carrying method and phase locked loop frequency synthesizer thereof - Google Patents
Modulus modulator and dynamic carrying method and phase locked loop frequency synthesizer thereofInfo
- Publication number
- TWI339953B TWI339953B TW096149865A TW96149865A TWI339953B TW I339953 B TWI339953 B TW I339953B TW 096149865 A TW096149865 A TW 096149865A TW 96149865 A TW96149865 A TW 96149865A TW I339953 B TWI339953 B TW I339953B
- Authority
- TW
- Taiwan
- Prior art keywords
- locked loop
- phase locked
- frequency synthesizer
- loop frequency
- carrying method
- Prior art date
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
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/616,933 US7634041B2 (en) | 2006-12-28 | 2006-12-28 | Phase locked loop frequency synthesizer |
Publications (2)
Publication Number | Publication Date |
---|---|
TW200828816A TW200828816A (en) | 2008-07-01 |
TWI339953B true TWI339953B (en) | 2011-04-01 |
Family
ID=39582990
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
TW096149865A TWI339953B (en) | 2006-12-28 | 2007-12-25 | Modulus modulator and dynamic carrying method and phase locked loop frequency synthesizer thereof |
Country Status (3)
Country | Link |
---|---|
US (1) | US7634041B2 (zh) |
CN (1) | CN101212226B (zh) |
TW (1) | TWI339953B (zh) |
Families Citing this family (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7635997B1 (en) * | 2005-06-29 | 2009-12-22 | Xilinx, Inc. | Circuit for and method of changing a frequency in a circuit |
US7711328B1 (en) | 2005-06-29 | 2010-05-04 | Xilinx, Inc. | Method of and circuit for sampling a frequency difference in an integrated circuit |
CN102006065B (zh) * | 2009-09-02 | 2012-09-05 | 中国科学院微电子研究所 | 一种用于减少σδ调制器量化噪声的分数锁相环结构 |
US8768994B2 (en) * | 2010-10-22 | 2014-07-01 | Taiwan Semiconductor Manufacturing Company, Ltd. | Filter auto-calibration using multi-clock generator |
DE102011053121B4 (de) * | 2011-08-30 | 2016-02-04 | Imst Gmbh | Erweiterte Delta-Sigma-Tau-Modulatorschaltung für eine Fraktional-N-PLL-Frequenzsynthesizer-Schaltung |
DE102011120769B4 (de) | 2011-12-10 | 2018-09-20 | Imst Gmbh | Synchron modulierte voll-digitale Delta-Sigma-Modulatorschaltung |
US8816724B2 (en) * | 2011-12-16 | 2014-08-26 | University College Cork—National University of Ireland, Cork | Nested digital delta-sigma modulator |
CN108736888B (zh) * | 2017-04-18 | 2021-10-08 | 博通集成电路(上海)股份有限公司 | 用于补偿分数n频率综合器中的量化噪声的电路 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6008703A (en) | 1997-01-31 | 1999-12-28 | Massachusetts Institute Of Technology | Digital compensation for wideband modulation of a phase locked loop frequency synthesizer |
US6011815A (en) | 1997-09-16 | 2000-01-04 | Telefonaktiebolaget Lm Ericsson | Compensated ΔΣ controlled phase locked loop modulator |
US6717998B2 (en) * | 1999-12-13 | 2004-04-06 | Matsushita Electric Industrial Co., Ltd. | Frequency synthesizer apparatus equipped with fraction part control circuit, communication apparatus, frequency modulator apparatus, and frequency modulating method |
US6686803B1 (en) * | 2000-07-10 | 2004-02-03 | Silicon Laboratories, Inc. | Integrated circuit incorporating circuitry for determining which of at least two possible frequencies is present on an externally provided reference signal and method therefor |
DE10205680B4 (de) | 2002-02-12 | 2010-06-02 | Infineon Technologies Ag | Ein-Punkt-Modulator mit PLL-Schaltung |
JP4041323B2 (ja) * | 2002-03-12 | 2008-01-30 | 松下電器産業株式会社 | 周波数変調装置、周波数変調方法、および、無線回路装置 |
-
2006
- 2006-12-28 US US11/616,933 patent/US7634041B2/en active Active
-
2007
- 2007-12-24 CN CN2007103005721A patent/CN101212226B/zh not_active Expired - Fee Related
- 2007-12-25 TW TW096149865A patent/TWI339953B/zh not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
US7634041B2 (en) | 2009-12-15 |
US20080157823A1 (en) | 2008-07-03 |
CN101212226B (zh) | 2010-07-28 |
TW200828816A (en) | 2008-07-01 |
CN101212226A (zh) | 2008-07-02 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
MM4A | Annulment or lapse of patent due to non-payment of fees |