GB9416381D0 - Frequency synthesizer - Google Patents

Frequency synthesizer

Info

Publication number
GB9416381D0
GB9416381D0 GB9416381A GB9416381A GB9416381D0 GB 9416381 D0 GB9416381 D0 GB 9416381D0 GB 9416381 A GB9416381 A GB 9416381A GB 9416381 A GB9416381 A GB 9416381A GB 9416381 D0 GB9416381 D0 GB 9416381D0
Authority
GB
United Kingdom
Prior art keywords
frequency synthesizer
synthesizer
frequency
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.)
Withdrawn
Application number
GB9416381A
Other versions
GB2282285A (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
NEC Corp
Original Assignee
NEC Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by NEC Corp filed Critical NEC Corp
Priority to GB9525281A priority Critical patent/GB2294830A/en
Publication of GB9416381D0 publication Critical patent/GB9416381D0/en
Publication of GB2282285A publication Critical patent/GB2282285A/en
Withdrawn legal-status Critical Current

Links

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
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/095—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation to the loop in front of the voltage controlled oscillator
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0916—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop
    • H03C3/0925—Modifications of modulator for regulating the mean frequency using a phase locked loop with frequency divider or counter in the loop applying frequency modulation at the divider in the feedback loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03C—MODULATION
    • H03C3/00—Angle modulation
    • H03C3/02—Details
    • H03C3/09—Modifications of modulator for regulating the mean frequency
    • H03C3/0908—Modifications of modulator for regulating the mean frequency using a phase locked loop
    • H03C3/0941—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation at more than one point in the loop
    • 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
    • H03L7/08—Details of the phase-locked loop
    • H03L7/099—Details of the phase-locked loop concerning mainly the controlled oscillator of the loop
    • 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
    • H03L7/187—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 using means for coarse tuning the voltage controlled oscillator of the loop
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L2207/00—Indexing scheme relating to automatic control of frequency or phase and to synchronisation
    • H03L2207/06—Phase locked loops with a controlled oscillator having at least two frequency control terminals
GB9416381A 1993-08-13 1994-08-12 VCO; Frequency synthesizers Withdrawn GB2282285A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB9525281A GB2294830A (en) 1993-08-13 1994-08-12 Frequency synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5222213A JPH0758637A (en) 1993-08-13 1993-08-13 Frequency synthesizer

Publications (2)

Publication Number Publication Date
GB9416381D0 true GB9416381D0 (en) 1994-10-05
GB2282285A GB2282285A (en) 1995-03-29

Family

ID=16778910

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9416381A Withdrawn GB2282285A (en) 1993-08-13 1994-08-12 VCO; Frequency synthesizers

Country Status (2)

Country Link
JP (1) JPH0758637A (en)
GB (1) GB2282285A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997023953A1 (en) * 1995-12-25 1997-07-03 Matsushita Electric Industrial Co., Ltd. High-frequency device
JP3488180B2 (en) * 2000-05-30 2004-01-19 松下電器産業株式会社 Frequency synthesizer
GB2370167B (en) * 2000-12-18 2005-01-05 Texas Instruments Ltd Improvements in or relating to phase locked loops
DE10122194A1 (en) 2001-05-08 2002-11-28 Infineon Technologies Ag Phase-locked loop
US6873214B2 (en) 2002-05-03 2005-03-29 Texas Instruments Incorporated Use of configurable capacitors to tune a self biased phase locked loop

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5676639A (en) * 1979-11-27 1981-06-24 Trio Kenwood Corp Synthesizer receiver
FR2511563B1 (en) * 1981-08-14 1986-05-16 Trt Telecom Radio Electr PHASE LOCKING DEVICE FOR PROVIDING SIGNALS WHOSE FREQUENCY MAY VARY ON A WIDE RANGE
GB2120478B (en) * 1982-04-22 1985-10-16 Standard Telephones Cables Ltd Voltage controlled oscillator
US4510465A (en) * 1983-08-12 1985-04-09 Motorola, Inc. Linear gain voltage controlled oscillator with modulation compensation

Also Published As

Publication number Publication date
GB2282285A (en) 1995-03-29
JPH0758637A (en) 1995-03-03

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)