GB8519193D0 - Fast frequency switching fractional synthesizer - Google Patents

Fast frequency switching fractional synthesizer

Info

Publication number
GB8519193D0
GB8519193D0 GB858519193A GB8519193A GB8519193D0 GB 8519193 D0 GB8519193 D0 GB 8519193D0 GB 858519193 A GB858519193 A GB 858519193A GB 8519193 A GB8519193 A GB 8519193A GB 8519193 D0 GB8519193 D0 GB 8519193D0
Authority
GB
United Kingdom
Prior art keywords
frequency switching
fast frequency
fractional synthesizer
switching fractional
synthesizer
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Withdrawn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
GB858519193A
Other versions
GB2184617A (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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to GB08519193A priority Critical patent/GB2184617A/en
Publication of GB8519193D0 publication Critical patent/GB8519193D0/en
Publication of GB2184617A publication Critical patent/GB2184617A/en
Withdrawn legal-status Critical Current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
    • H03L7/18—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
    • H03L7/197—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division
    • H03L7/1974—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division
    • H03L7/1976—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider
    • H03L7/1978—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 numbers which are variable in time or the frequency divider dividing by a factor variable in time, e.g. for obtaining fractional frequency division for fractional frequency division using a phase accumulator for controlling the counter or frequency divider using a cycle or pulse removing circuit
GB08519193A 1985-07-30 1985-07-30 Fast frequency switching fractional synthesizer Withdrawn GB2184617A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08519193A GB2184617A (en) 1985-07-30 1985-07-30 Fast frequency switching fractional synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB08519193A GB2184617A (en) 1985-07-30 1985-07-30 Fast frequency switching fractional synthesizer

Publications (2)

Publication Number Publication Date
GB8519193D0 true GB8519193D0 (en) 1985-09-04
GB2184617A GB2184617A (en) 1987-06-24

Family

ID=10583064

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08519193A Withdrawn GB2184617A (en) 1985-07-30 1985-07-30 Fast frequency switching fractional synthesizer

Country Status (1)

Country Link
GB (1) GB2184617A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE59010525D1 (en) * 1990-01-24 1996-11-07 Siemens Ag Method and circuit arrangement for minimizing an alternating component of a phase detector output signal of a phase locked loop
US5256981A (en) * 1992-02-27 1993-10-26 Hughes Aircraft Company Digital error corrected fractional-N synthesizer and method
US5307071A (en) * 1992-04-17 1994-04-26 Hughes Aircraft Company Low noise frequency synthesizer using half integer dividers and analog gain compensation

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3872397A (en) * 1973-11-07 1975-03-18 King Radio Corp Method and apparatus for decreasing channel spacing in digital frequency synthesizers
GB1447418A (en) * 1974-03-29 1976-08-25 Mullard Ltd Frequency synthesiser
GB2068185B (en) * 1980-01-21 1983-06-22 Philips Electronic Associated Frequency synthesiser of the phase lock loop type
DE3046486C2 (en) * 1980-12-10 1984-03-22 Wandel & Goltermann Gmbh & Co, 7412 Eningen Method for reducing the noise of a digitally adjustable frequency generator and frequency generator operating according to it
GB2117198A (en) * 1982-03-19 1983-10-05 Philips Electronic Associated Frequency synthesiser
GB2131240A (en) * 1982-11-05 1984-06-13 Philips Electronic Associated Frequency synthesiser

Also Published As

Publication number Publication date
GB2184617A (en) 1987-06-24

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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)