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GB8301150D0 - Electrical frequency synthesising circuits - Google Patents

Electrical frequency synthesising circuits

Info

Publication number
GB8301150D0
GB8301150D0 GB838301150A GB8301150A GB8301150D0 GB 8301150 D0 GB8301150 D0 GB 8301150D0 GB 838301150 A GB838301150 A GB 838301150A GB 8301150 A GB8301150 A GB 8301150A GB 8301150 D0 GB8301150 D0 GB 8301150D0
Authority
GB
United Kingdom
Prior art keywords
circuits
electrical frequency
frequency synthesising
synthesising
electrical
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.)
Granted
Application number
GB838301150A
Other versions
GB2113493B (en
GB2113493A (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 Dana Instruments Ltd
Original Assignee
Racal Dana Instruments 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
Priority claimed from GB7907795A external-priority patent/GB2045556B/en
Application filed by Racal Dana Instruments Ltd filed Critical Racal Dana Instruments Ltd
Priority to GB08301150A priority Critical patent/GB2113493B/en
Publication of GB8301150D0 publication Critical patent/GB8301150D0/en
Publication of GB2113493A publication Critical patent/GB2113493A/en
Application granted granted Critical
Publication of GB2113493B publication Critical patent/GB2113493B/en
Expired 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
    • H03C3/0958—Modifications of modulator for regulating the mean frequency using a phase locked loop applying frequency modulation by varying the characteristics of the voltage controlled oscillator
    • 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
GB08301150A 1979-03-06 1983-01-17 Frequency synthesizer with f.m. capability Expired GB2113493B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB08301150A GB2113493B (en) 1979-03-06 1983-01-17 Frequency synthesizer with f.m. capability

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB7907795A GB2045556B (en) 1979-03-06 1979-03-06 Frequency synthesizers
GB08301150A GB2113493B (en) 1979-03-06 1983-01-17 Frequency synthesizer with f.m. capability

Publications (3)

Publication Number Publication Date
GB8301150D0 true GB8301150D0 (en) 1983-02-16
GB2113493A GB2113493A (en) 1983-08-03
GB2113493B GB2113493B (en) 1983-12-21

Family

ID=26270794

Family Applications (1)

Application Number Title Priority Date Filing Date
GB08301150A Expired GB2113493B (en) 1979-03-06 1983-01-17 Frequency synthesizer with f.m. capability

Country Status (1)

Country Link
GB (1) GB2113493B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3720682C2 (en) 1987-06-23 1994-12-08 Hagenuk Telecom Gmbh Oscillator device for generating at least two different frequencies
DE3837246A1 (en) * 1988-10-28 1990-05-03 Siemens Ag Frequency generator
GB2256983B (en) * 1991-06-19 1995-03-08 Marconi Instruments Ltd Microwave synthesisers

Also Published As

Publication number Publication date
GB2113493B (en) 1983-12-21
GB2113493A (en) 1983-08-03

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Legal Events

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