WO2014078311A3 - Frequency synthesis using a phase locked loop - Google Patents
Frequency synthesis using a phase locked loop Download PDFInfo
- Publication number
- WO2014078311A3 WO2014078311A3 PCT/US2013/069691 US2013069691W WO2014078311A3 WO 2014078311 A3 WO2014078311 A3 WO 2014078311A3 US 2013069691 W US2013069691 W US 2013069691W WO 2014078311 A3 WO2014078311 A3 WO 2014078311A3
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- locked loop
- phase locked
- phase
- frequency synthesis
- divider chain
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B25/00—Simultaneous generation by a free-running oscillator of oscillations having different frequencies
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
-
- 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
- H03L7/183—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 fixed numbers or the frequency divider dividing by a fixed number
Landscapes
- Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Abstract
A phase locked loop circuit comprises a phase/frequency detector, a voltage-controlled oscillator (VCO), and a divider chain in a feedback path coupling the VCO output to the phase/frequency detector. The divider chain comprises a plurality of sequentially connected divider circuits and a plurality of local oscillator outputs interspersed at different locations within the divider chain, which enables the circuit to simultaneously output multiple oscillator signals having different frequencies.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US201261726166P | 2012-11-14 | 2012-11-14 | |
US61/726,166 | 2012-11-14 |
Publications (3)
Publication Number | Publication Date |
---|---|
WO2014078311A2 WO2014078311A2 (en) | 2014-05-22 |
WO2014078311A3 true WO2014078311A3 (en) | 2014-08-21 |
WO2014078311A4 WO2014078311A4 (en) | 2014-10-23 |
Family
ID=50731811
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/US2013/069691 WO2014078311A2 (en) | 2012-11-14 | 2013-11-12 | Frequency synthesis using a phase locked loop |
Country Status (2)
Country | Link |
---|---|
TW (1) | TWI650948B (en) |
WO (1) | WO2014078311A2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN104868911B (en) * | 2015-05-13 | 2017-08-25 | 中国电子科技集团公司第四十一研究所 | broadband phase locking frequency synthesis circuit |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1986007219A1 (en) * | 1985-05-22 | 1986-12-04 | Plessey Overseas Limited | Phase modulators |
US4686488A (en) * | 1985-02-06 | 1987-08-11 | Plessey Overseas Limited | Fractional N frequency synthesizer with modulation compensation |
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 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7522898B2 (en) * | 2005-06-01 | 2009-04-21 | Wilinx Corporation | High frequency synthesizer circuits and methods |
KR100712527B1 (en) * | 2005-08-18 | 2007-04-27 | 삼성전자주식회사 | Spread spectrum clock generator reducing jitter problem |
US7538625B2 (en) * | 2007-02-27 | 2009-05-26 | International Business Machines Corporation | Method and enhanced phase locked loop circuits for implementing effective testing |
US7859344B2 (en) * | 2008-04-29 | 2010-12-28 | Renesas Electronics Corporation | PLL circuit with improved phase difference detection |
-
2013
- 2013-11-12 WO PCT/US2013/069691 patent/WO2014078311A2/en active Search and Examination
- 2013-11-13 TW TW102141222A patent/TWI650948B/en active
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4686488A (en) * | 1985-02-06 | 1987-08-11 | Plessey Overseas Limited | Fractional N frequency synthesizer with modulation compensation |
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 |
WO1986007219A1 (en) * | 1985-05-22 | 1986-12-04 | Plessey Overseas Limited | Phase modulators |
Also Published As
Publication number | Publication date |
---|---|
TWI650948B (en) | 2019-02-11 |
WO2014078311A2 (en) | 2014-05-22 |
WO2014078311A4 (en) | 2014-10-23 |
TW201444296A (en) | 2014-11-16 |
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