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GB2228380B - Frequency synthesizer - Google Patents

Frequency synthesizer

Info

Publication number
GB2228380B
GB2228380B GB9000665A GB9000665A GB2228380B GB 2228380 B GB2228380 B GB 2228380B GB 9000665 A GB9000665 A GB 9000665A GB 9000665 A GB9000665 A GB 9000665A GB 2228380 B GB2228380 B GB 2228380B
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.)
Expired - Lifetime
Application number
GB9000665A
Other versions
GB9000665D0 (en
GB2228380A (en
Inventor
Edgar Alvin Johnson
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.)
Eaton Corp
Original Assignee
Eaton 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
Priority claimed from US07/115,027 external-priority patent/US4800341A/en
Application filed by Eaton Corp filed Critical Eaton Corp
Publication of GB9000665D0 publication Critical patent/GB9000665D0/en
Publication of GB2228380A publication Critical patent/GB2228380A/en
Application granted granted Critical
Publication of GB2228380B publication Critical patent/GB2228380B/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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
    • H03L7/22—Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop using more than one loop
GB9000665A 1987-11-02 1990-01-11 Frequency synthesizer Expired - Lifetime GB2228380B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US07/115,027 US4800341A (en) 1987-11-02 1987-11-02 Fast switching frequency synthesizer
GB8825665A GB2212014B (en) 1987-11-02 1988-11-02 Fast switching frequency synthesizer

Publications (3)

Publication Number Publication Date
GB9000665D0 GB9000665D0 (en) 1990-03-14
GB2228380A GB2228380A (en) 1990-08-22
GB2228380B true GB2228380B (en) 1992-07-08

Family

ID=26294579

Family Applications (1)

Application Number Title Priority Date Filing Date
GB9000665A Expired - Lifetime GB2228380B (en) 1987-11-02 1990-01-11 Frequency synthesizer

Country Status (1)

Country Link
GB (1) GB2228380B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5130670A (en) * 1991-08-01 1992-07-14 Hewlett-Packard Company Phase-locking circuit for swept synthesized source preferably having stability enhancement circuit
SE513576C2 (en) * 1996-07-02 2000-10-02 Celsiustech Electronics Ab Method and apparatus for controlling an oscillator

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB936473A (en) * 1960-01-07 1963-09-11 Standard Telephones Cables Ltd Improvements in or relating to electric variable frequency oscillators
GB1027443A (en) * 1962-03-19 1966-04-27 Beckman Instruments Inc Frequency synthesizer
GB1049775A (en) * 1961-11-16 1966-11-30 Plessey Co Ltd Improvements in or relating to apparatus for and methods of frequency synthesis
US3600699A (en) * 1969-08-21 1971-08-17 Rca Corp Frequency synthesizer having a plurality of cascaded phase locked loops
GB2080057A (en) * 1980-07-12 1982-01-27 Racal Dana Instr Ltd Improvements in and relating to frequency synthesizers
GB2212014A (en) * 1987-11-02 1989-07-12 Eaton Corp Phase-lock frequency synthesizer
GB2218869A (en) * 1988-05-18 1989-11-22 Stc Plc Frequency source using PLL'S

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB936473A (en) * 1960-01-07 1963-09-11 Standard Telephones Cables Ltd Improvements in or relating to electric variable frequency oscillators
GB1049775A (en) * 1961-11-16 1966-11-30 Plessey Co Ltd Improvements in or relating to apparatus for and methods of frequency synthesis
GB1027443A (en) * 1962-03-19 1966-04-27 Beckman Instruments Inc Frequency synthesizer
US3600699A (en) * 1969-08-21 1971-08-17 Rca Corp Frequency synthesizer having a plurality of cascaded phase locked loops
GB2080057A (en) * 1980-07-12 1982-01-27 Racal Dana Instr Ltd Improvements in and relating to frequency synthesizers
GB2212014A (en) * 1987-11-02 1989-07-12 Eaton Corp Phase-lock frequency synthesizer
GB2218869A (en) * 1988-05-18 1989-11-22 Stc Plc Frequency source using PLL'S

Also Published As

Publication number Publication date
GB9000665D0 (en) 1990-03-14
GB2228380A (en) 1990-08-22

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19921102