GB2089602B - Controllable reference oscillator - Google Patents

Controllable reference oscillator

Info

Publication number
GB2089602B
GB2089602B GB8117273A GB8117273A GB2089602B GB 2089602 B GB2089602 B GB 2089602B GB 8117273 A GB8117273 A GB 8117273A GB 8117273 A GB8117273 A GB 8117273A GB 2089602 B GB2089602 B GB 2089602B
Authority
GB
United Kingdom
Prior art keywords
reference oscillator
controllable reference
controllable
oscillator
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
Application number
GB8117273A
Other versions
GB2089602A (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.)
Plessey Co Ltd
Original Assignee
Plessey Co Ltd
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 Plessey Co Ltd filed Critical Plessey Co Ltd
Priority to GB8117273A priority Critical patent/GB2089602B/en
Publication of GB2089602A publication Critical patent/GB2089602A/en
Application granted granted Critical
Publication of GB2089602B publication Critical patent/GB2089602B/en
Expired 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
    • H03L7/23—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 with pulse counters or frequency dividers
    • H03L7/235—Nested phase locked loops
    • 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
    • H03L7/02—Automatic control of frequency or phase; Synchronisation using a frequency discriminator comprising a passive frequency-determining element
    • 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
    • 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
    • H03L2207/18—Temporarily disabling, deactivating or stopping the frequency counter or divider
GB8117273A 1980-12-16 1981-06-05 Controllable reference oscillator Expired GB2089602B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8117273A GB2089602B (en) 1980-12-16 1981-06-05 Controllable reference oscillator

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB8040272 1980-12-16
GB8117273A GB2089602B (en) 1980-12-16 1981-06-05 Controllable reference oscillator

Publications (2)

Publication Number Publication Date
GB2089602A GB2089602A (en) 1982-06-23
GB2089602B true GB2089602B (en) 1984-10-17

Family

ID=26277868

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8117273A Expired GB2089602B (en) 1980-12-16 1981-06-05 Controllable reference oscillator

Country Status (1)

Country Link
GB (1) GB2089602B (en)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4494080A (en) * 1981-11-16 1985-01-15 International Business Machines Corporation Voltage-controlled oscillator with independent gain and frequency controls
US4591859A (en) * 1982-09-20 1986-05-27 Raytheon Company Radar transmitter
US4507796A (en) * 1982-10-20 1985-03-26 Printronix, Inc. Electronic apparatus having low radio frequency interference from system clock signal
US4570130A (en) * 1982-10-20 1986-02-11 International Business Machines Corporation Input controller circuit apparatus for phase lock loop voltage controlled oscillator
GB2134269B (en) * 1983-01-22 1986-07-02 Marconi Instruments Ltd Frequency counting
US4740761A (en) * 1986-12-23 1988-04-26 Austron, Inc. Fine tuning of atomic frequency standards
US8598924B2 (en) 2012-02-13 2013-12-03 Rf Monolithics, Inc. Frequency-locked synthesizer with low power consumption and related system and method

Also Published As

Publication number Publication date
GB2089602A (en) 1982-06-23

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Legal Events

Date Code Title Description
732 Registration of transactions, instruments or events in the register (sect. 32/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19980605