DE3776829D1 - Akustische oberflaechenwellenfilter. - Google Patents

Akustische oberflaechenwellenfilter.

Info

Publication number: DE3776829D1
Authority: DE; Germany
Prior art keywords: surface wave; wave filters; acoustic surface; acoustic; filters
Prior art date: 1986-06-25
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

DE8787305623T

Other languages

English (en)

Inventor

Robert Christopher Peach

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.)

General Electric Co PLC

General Electric Co

Original Assignee

General Electric Co PLC

General Electric Co

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.)

1986-06-25

Filing date

1987-06-24

Publication date

1992-04-02

1987-06-24 Application filed by General Electric Co PLC, General Electric Co filed Critical General Electric Co PLC

1992-04-02 Application granted granted Critical

1992-04-02 Publication of DE3776829D1 publication Critical patent/DE3776829D1/de

2007-06-25 Anticipated expiration legal-status Critical

Status Expired - Fee Related legal-status Critical Current

Links

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/02—Details
- H03H9/125—Driving means, e.g. electrodes, coils
- H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
- H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
- H03H9/14505—Unidirectional SAW transducers

Landscapes

Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)

DE8787305623T 1986-06-25 1987-06-24 Akustische oberflaechenwellenfilter. Expired - Fee Related DE3776829D1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB868615522A GB8615522D0 (en)	1986-06-25	1986-06-25	Surface acoustic wave filters

Publications (1)

Publication Number	Publication Date
DE3776829D1 true DE3776829D1 (de)	1992-04-02

Family

ID=10600086

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8787305623T Expired - Fee Related DE3776829D1 (de)	1986-06-25	1987-06-24	Akustische oberflaechenwellenfilter.

Country Status (5)

Country	Link
US (1)	US4733207A (de)
EP (1)	EP0254427B1 (de)
JP (1)	JPS63266911A (de)
DE (1)	DE3776829D1 (de)
GB (2)	GB8615522D0 (de)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE3942148A1 (de) *	1989-12-20	1991-06-27	Siemens Ag	Oberflaechenwellen-reflektorfilter
US5313177A (en) *	1992-04-06	1994-05-17	Motorola, Inc.	Method and apparatus for an acoustic wave filter
JPH066111A (ja) *	1992-06-18	1994-01-14	Mitsubishi Electric Corp	複合デュプレックスフィルタ
DE4330438B4 (de) *	1992-09-09	2010-07-01	Hitachi, Ltd.	Oberflächenakustikwelleneinrichtung
WO2001026223A1 (fr) *	1999-10-04	2001-04-12	Kabushiki Kaisha Toshiba	Dispositif a ondes acoustiques de surface (saw)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4575696A (en) *	1970-09-02	1986-03-11	Texas Instruments Incorporated	Method for using interdigital surface wave transducer to generate unidirectionally propagating surface wave
US3727155A (en) *	1972-03-20	1973-04-10	Zenith Radio Corp	Acoustic surface wave filter
US3987376A (en) *	1974-03-22	1976-10-19	Hazeltine Corporation	Acoustic surface wave device with harmonic coupled transducers
JPS51138362A (en) *	1975-05-26	1976-11-29	Kimio Shibayama	Grouped unidirectional elastic surface wave filter
US4297660A (en) *	1978-12-14	1981-10-27	Murata Manufacturing Co., Ltd.	Electric circuit using surface acoustic wave device
JPS5989024A (ja) *	1982-11-12	1984-05-23	Oki Electric Ind Co Ltd	表面弾性波フイルタ

1986
- 1986-06-25 GB GB868615522A patent/GB8615522D0/en active Pending
1987
- 1987-06-12 US US07/062,090 patent/US4733207A/en not_active Expired - Fee Related
- 1987-06-17 GB GB8714204A patent/GB2192107B/en not_active Expired - Fee Related
- 1987-06-23 JP JP62154613A patent/JPS63266911A/ja active Pending
- 1987-06-24 EP EP87305623A patent/EP0254427B1/de not_active Expired - Lifetime
- 1987-06-24 DE DE8787305623T patent/DE3776829D1/de not_active Expired - Fee Related

Also Published As

Publication number	Publication date
JPS63266911A (ja)	1988-11-04
GB8615522D0 (en)	1986-07-30
US4733207A (en)	1988-03-22
GB2192107B (en)	1990-01-31
EP0254427B1 (de)	1992-02-26
GB8714204D0 (en)	1987-07-22
GB2192107A (en)	1987-12-31
EP0254427A1 (de)	1988-01-27

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Legal Events

Date	Code	Title	Description
1993-03-25	8364	No opposition during term of opposition
1998-06-10	8339	Ceased/non-payment of the annual fee