GB2024546B - Frequency synthesisers - Google Patents

Frequency synthesisers

Info

Publication number
GB2024546B
GB2024546B GB7915132A GB7915132A GB2024546B GB 2024546 B GB2024546 B GB 2024546B GB 7915132 A GB7915132 A GB 7915132A GB 7915132 A GB7915132 A GB 7915132A GB 2024546 B GB2024546 B GB 2024546B
Authority
GB
United Kingdom
Prior art keywords
frequency synthesisers
synthesisers
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
Application number
GB7915132A
Other versions
GB2024546A (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.)
Racal Group Services Ltd
Original Assignee
Racal Group Services 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 Racal Group Services Ltd filed Critical Racal Group Services Ltd
Priority to GB7915132A priority Critical patent/GB2024546B/en
Publication of GB2024546A publication Critical patent/GB2024546A/en
Application granted granted Critical
Publication of GB2024546B publication Critical patent/GB2024546B/en
Expired legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/22Indirect 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
    • H03L7/23Indirect 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
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18Indirect 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
    • H03L7/183Indirect 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
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03LAUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
    • H03L7/00Automatic control of frequency or phase; Synchronisation
    • H03L7/06Automatic control of frequency or phase; Synchronisation using a reference signal applied to a frequency- or phase-locked loop
    • H03L7/16Indirect frequency synthesis, i.e. generating a desired one of a number of predetermined frequencies using a frequency- or phase-locked loop
    • H03L7/18Indirect 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
    • H03L7/183Indirect 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
    • H03L7/185Indirect 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 a mixer in the loop
GB7915132A 1978-05-26 1979-05-01 Frequency synthesisers Expired GB2024546B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB7915132A GB2024546B (en) 1978-05-26 1979-05-01 Frequency synthesisers

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB2347078 1978-05-26
GB7915132A GB2024546B (en) 1978-05-26 1979-05-01 Frequency synthesisers

Publications (2)

Publication Number Publication Date
GB2024546A GB2024546A (en) 1980-01-09
GB2024546B true GB2024546B (en) 1982-12-22

Family

ID=26256535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB7915132A Expired GB2024546B (en) 1978-05-26 1979-05-01 Frequency synthesisers

Country Status (1)

Country Link
GB (1) GB2024546B (en)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3335024A1 (en) * 1983-09-28 1985-04-11 Philips Patentverwaltung Gmbh, 2000 Hamburg CIRCUIT ARRANGEMENT FOR A RECEIVER WITH TWO PHASE CONTROL CIRCUITS
US4763083A (en) * 1986-05-02 1988-08-09 Hewlett-Packard Company Low phase noise RF synthesizer
DE3801418A1 (en) * 1988-01-20 1989-08-03 Telefunken Electronic Gmbh Frequency synthesis circuit
GB2245441B (en) * 1990-06-13 1994-04-06 Motorola Israel Ltd Fine-tune frequency adjustor
US5140284A (en) * 1991-02-20 1992-08-18 Telefonaktiebolaget L M Ericsson Broad band frequency synthesizer for quick frequency retuning
KR100219709B1 (en) * 1994-03-15 1999-09-01 윤종용 Signal processing circuits for digital radio communication system
US5604468A (en) * 1996-04-22 1997-02-18 Motorola, Inc. Frequency synthesizer with temperature compensation and frequency multiplication and method of providing the same
DE19946494A1 (en) * 1999-09-28 2001-05-03 Infineon Technologies Ag Receiver for different frequency bands
US6992987B2 (en) * 2003-05-01 2006-01-31 Genesis Microchip Inc. Enumeration method for the link clock rate and the pixel/audio clock rate
CN111120121B (en) * 2019-12-25 2022-04-05 潍柴动力股份有限公司 Frequency drive control method, frequency drive control device, engine controller and storage medium

Also Published As

Publication number Publication date
GB2024546A (en) 1980-01-09

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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