GB2089603B - Frequency synthesisers - Google Patents

Frequency synthesisers

Info

Publication number: GB2089603B
Authority: GB; United Kingdom
Prior art keywords: frequency synthesisers; synthesisers; frequency
Prior art date: 1980-12-16
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

GB8137598A

Other versions

GB2089603A (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.)

1980-12-16

Filing date

1981-12-14

Publication date

1984-06-13

1981-12-14 Application filed by Plessey Co Ltd filed Critical Plessey Co Ltd

1981-12-14 Priority to GB8137598A priority Critical patent/GB2089603B/en

1982-06-23 Publication of GB2089603A publication Critical patent/GB2089603A/en

1984-06-13 Application granted granted Critical

1984-06-13 Publication of GB2089603B publication Critical patent/GB2089603B/en

Status Expired legal-status Critical Current

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
- 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
- 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

GB8137598A 1980-12-16 1981-12-14 Frequency synthesisers Expired GB2089603B (en)

Priority Applications (1)

Application Number	Priority Date	Filing Date	Title
GB8137598A GB2089603B (en)	1980-12-16	1981-12-14	Frequency synthesisers

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB8040272		1980-12-16
GB8137598A GB2089603B (en)	1980-12-16	1981-12-14	Frequency synthesisers

Publications (2)

Publication Number	Publication Date
GB2089603A GB2089603A (en)	1982-06-23
GB2089603B true GB2089603B (en)	1984-06-13

Family

ID=26277869

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
GB8137598A Expired GB2089603B (en)	1980-12-16	1981-12-14	Frequency synthesisers

Country Status (1)

Country	Link
GB (1)	GB2089603B (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5867536A (en) *	1997-02-11	1999-02-02	Hittite Microwave Corporation	Digital synchronization of broadcast frequency

1981
- 1981-12-14 GB GB8137598A patent/GB2089603B/en not_active Expired

Also Published As

Publication number	Publication date
GB2089603A (en)	1982-06-23

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Legal Events

Date	Code	Title	Description
1991-02-20	732	Registration of transactions, instruments or events in the register (sect. 32/1977)
2001-08-01	PCNP	Patent ceased through non-payment of renewal fee	Effective date: 20001214