DE3674542D1 - Fm-rueckkopplungsdemodulator mit injektionssynchronisiertem oszillator. - Google Patents

Fm-rueckkopplungsdemodulator mit injektionssynchronisiertem oszillator.

Info

Publication number: DE3674542D1
Authority: DE; Germany
Prior art keywords: injection; synchronized oscillator; feedback demodulator; demodulator; feedback
Prior art date: 1985-05-11
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 - Fee Related

Application number

DE8686903449T

Other languages

English (en)

Inventor

Paul Cowley

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 Semiconductors Ltd

Original Assignee

Plessey Overseas 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.)

1985-05-11

Filing date

1986-05-12

Publication date

1990-10-31

1986-05-12 Application filed by Plessey Overseas Ltd filed Critical Plessey Overseas Ltd

1990-10-31 Application granted granted Critical

1990-10-31 Publication of DE3674542D1 publication Critical patent/DE3674542D1/de

2006-05-13 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/001—Details of arrangements applicable to more than one type of frequency demodulator
- H03D3/003—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback
- H03D3/004—Arrangements for reducing frequency deviation, e.g. by negative frequency feedback wherein the demodulated signal is used for controlling an oscillator, e.g. the local oscillator

Landscapes

Engineering & Computer Science (AREA)
Power Engineering (AREA)
Stabilization Of Oscillater, Synchronisation, Frequency Synthesizers (AREA)
Superheterodyne Receivers (AREA)

DE8686903449T 1985-05-11 1986-05-12 Fm-rueckkopplungsdemodulator mit injektionssynchronisiertem oszillator. Expired - Fee Related DE3674542D1 (de)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
GB858512000A GB8512000D0 (en)	1985-05-11	1985-05-11	Fm demodulators
PCT/GB1986/000260 WO1986006894A1 (en)	1985-05-11	1986-05-12	Fm feedback demodulator using injection-locked oscillator

Publications (1)

Publication Number	Publication Date
DE3674542D1 true DE3674542D1 (de)	1990-10-31

Family

ID=10579025

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8686903449T Expired - Fee Related DE3674542D1 (de)	1985-05-11	1986-05-12	Fm-rueckkopplungsdemodulator mit injektionssynchronisiertem oszillator.

Country Status (5)

Country	Link
EP (1)	EP0222863B1 (de)
JP (1)	JP2558265B2 (de)
DE (1)	DE3674542D1 (de)
GB (2)	GB8512000D0 (de)
WO (1)	WO1986006894A1 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
ES2142754B1 (es) *	1998-04-17	2000-11-16	Iglesias Angel Sa	Demodulador para señales moduladas en frecuencia de alta ganancia de demodulacion.
DE19933543C1 (de) *	1999-07-16	2001-01-25	Siemens Ag	Abgleichfreier Demodulator für frequenzmodulierte Signale

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US2488584A (en) *	1943-12-08	1949-11-22	Rca Corp	Locked-in oscillator circuits
US4035730A (en) *	1976-03-31	1977-07-12	Scientific-Atlanta, Inc.	FM noise threshold extension demodulator apparatus
US4087756A (en) *	1977-06-14	1978-05-02	Harris Corporation	FM Feedback demodulator having threshold extension circuit with two-pole crystal filters
US4357580A (en) *	1980-08-21	1982-11-02	Rca Corporation	Wideband microwave frequency divider
JPS5981111U (ja) *	1982-11-25	1984-06-01	株式会社東芝	周波数変調型復調装置
US4679247A (en) *	1985-03-27	1987-07-07	Cincinnati Microwave, Inc.	FM receiver
US4731872A (en) *	1985-03-27	1988-03-15	Cincinnati Microwave, Inc.	FM TVRO receiver with improved oscillating limiter

1985
- 1985-05-11 GB GB858512000A patent/GB8512000D0/en active Pending
1986
- 1986-05-12 GB GB8611577A patent/GB2178258B/en not_active Expired
- 1986-05-12 DE DE8686903449T patent/DE3674542D1/de not_active Expired - Fee Related
- 1986-05-12 EP EP86903449A patent/EP0222863B1/de not_active Expired - Lifetime
- 1986-05-12 JP JP61502785A patent/JP2558265B2/ja not_active Expired - Fee Related
- 1986-05-12 WO PCT/GB1986/000260 patent/WO1986006894A1/en active IP Right Grant

Also Published As

Publication number	Publication date
JPS62502832A (ja)	1987-11-12
GB8512000D0 (en)	1985-06-19
GB2178258A (en)	1987-02-04
JP2558265B2 (ja)	1996-11-27
EP0222863A1 (de)	1987-05-27
GB8611577D0 (en)	1986-06-18
EP0222863B1 (de)	1990-09-26
GB2178258B (en)	1989-05-17
WO1986006894A1 (en)	1986-11-20

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Legal Events

Date	Code	Title	Description
1991-10-24	8364	No opposition during term of opposition
1993-07-01	8327	Change in the person/name/address of the patent owner	Owner name: PLESSEY SEMICONDUCTORS LTD., SWINDON, WILTSHIRE, G
2005-03-17	8339	Ceased/non-payment of the annual fee