DE3482639D1 - Akustische oberflaechenwellenanordnung. - Google Patents

Akustische oberflaechenwellenanordnung.

Info

Publication number: DE3482639D1
Authority: DE; Germany
Prior art keywords: surface wave; acoustic surface; wave arrangement; arrangement; acoustic
Prior art date: 1983-10-31
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 - Lifetime

Application number

DE8484201539T

Other languages

English (en)

Inventor

John Schofield

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.)

Koninklijke Philips NV

Original Assignee

Philips Gloeilampenfabrieken NV

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.)

1983-10-31

Filing date

1984-10-25

Publication date

1990-08-09

1984-10-25 Application filed by Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV

1990-08-09 Application granted granted Critical

1990-08-09 Publication of DE3482639D1 publication Critical patent/DE3482639D1/de

2004-10-26 Anticipated expiration legal-status Critical

Status Expired - Lifetime 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
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02637—Details concerning reflective or coupling arrays
- H03H9/02685—Grating lines having particular arrangements
- 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
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02637—Details concerning reflective or coupling arrays
- 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
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02944—Means for compensation or elimination of undesirable effects of ohmic loss
- 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
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02818—Means for compensation or elimination of undesirable effects
- H03H9/02913—Measures for shielding against electromagnetic fields
- 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
- H03H9/02535—Details of surface acoustic wave devices
- H03H9/02992—Details of bus bars, contact pads or other electrical connections for finger electrodes
- 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
- H03H9/14538—Formation

Landscapes

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

DE8484201539T 1983-10-31 1984-10-25 Akustische oberflaechenwellenanordnung. Expired - Lifetime DE3482639D1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB08328965A GB2149253A (en)	1983-10-31	1983-10-31	Surface acoustic wave device

Publications (1)

Publication Number	Publication Date
DE3482639D1 true DE3482639D1 (de)	1990-08-09

Family

ID=10550959

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8484201539T Expired - Lifetime DE3482639D1 (de)	1983-10-31	1984-10-25	Akustische oberflaechenwellenanordnung.

Country Status (6)

Country	Link
US (1)	US4575698A (de)
EP (1)	EP0140449B1 (de)
JP (1)	JPS60112307A (de)
CA (1)	CA1230408A (de)
DE (1)	DE3482639D1 (de)
GB (1)	GB2149253A (de)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4792939A (en) *	1986-01-24	1988-12-20	Hitachi Denshi Kabushiki Kaisha	Duplex radio communication transceiver
US5028831A (en) *	1990-04-04	1991-07-02	Motorola, Inc.	SAW reflectionless quarter-wavelength transducers
US6172582B1 (en)	1996-02-20	2001-01-09	Cts Corporation	Saw resonator and ladder filter with specified number of reflector electrode fingers
US6348845B2 (en)	1996-05-23	2002-02-19	Matsushita Electric Industrial Co., Ltd.	Surface acoustic wave filter and multistage surface acoustic wave filter
DE69737555T2 (de) *	1996-05-23	2007-08-09	Matsushita Electric Industrial Co., Ltd., Kadoma	Akustisches Oberflächenwellenfilter und mehrstufiges akustisches Oberflächenwellenfilter
US6801100B2 (en) *	1996-05-23	2004-10-05	Matsushita Electric Industrial Co., Ltd.	Inter-digital transducer, surface acoustic wave filter and communication apparatus using the same
JP3487772B2 (ja) *	1998-03-11	2004-01-19	富士通株式会社	弾性表面波フィルタ
EP1093849A4 (de)	1999-04-12	2003-06-18	Mitsubishi Heavy Ind Ltd	Verfahren zur zersetzung von organischen halogenierten verbindungen und dafür verwendete vorrichtung
KR100954292B1 (ko) *	2006-09-22	2010-04-26	가부시키가이샤 무라타 세이사쿠쇼	종결합 공진자형 탄성파 필터장치

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US3946342A (en) *	1973-08-10	1976-03-23	Texas Instruments Incorporated	Weighting surface wave filters by withdrawing electrodes
FR2290785A1 (fr) *	1974-11-06	1976-06-04	Feldmann Michel	Reflecteur d'ondes elastiques de surface et filtres comprenant un tel reflecteur
US4237433A (en) *	1979-03-13	1980-12-02	Sperry Corporation	Surface acoustic wave resonators with integrated internal coupler reflectors
US4331943A (en) *	1980-12-22	1982-05-25	Hewlett-Packard Company	Acoustic wave devices having transverse mode distortions eliminated structurally
US4365219A (en) *	1981-02-27	1982-12-21	General Electric Company	In-line surface acoustic wave filter assembly module and method of making same
US4510471A (en) *	1982-07-05	1985-04-09	U.S. Philips Corporation	Acoustic surface wave device including a reflective multistrip coupler
EP0098661B1 (de) *	1982-07-05	1989-09-13	Philips Electronics Uk Limited	Akustische Oberflächen-Wellenanordnung mit einem reflektierenden Multistrip-Koppler

1983
- 1983-10-31 GB GB08328965A patent/GB2149253A/en not_active Withdrawn
1984
- 1984-10-25 EP EP84201539A patent/EP0140449B1/de not_active Expired
- 1984-10-25 DE DE8484201539T patent/DE3482639D1/de not_active Expired - Lifetime
- 1984-10-29 US US06/665,837 patent/US4575698A/en not_active Expired - Fee Related
- 1984-10-31 JP JP59230037A patent/JPS60112307A/ja active Granted
- 1984-10-31 CA CA000466731A patent/CA1230408A/en not_active Expired

Also Published As

Publication number	Publication date
EP0140449B1 (de)	1990-07-04
EP0140449A3 (en)	1987-01-21
GB8328965D0 (en)	1983-11-30
GB2149253A (en)	1985-06-05
CA1230408A (en)	1987-12-15
US4575698A (en)	1986-03-11
JPS60112307A (ja)	1985-06-18
JPH0576809B2 (de)	1993-10-25
EP0140449A2 (de)	1985-05-08

Legal Events

Date	Code	Title	Description
1991-08-01	8364	No opposition during term of opposition
1993-10-07	8339	Ceased/non-payment of the annual fee

Publication	Publication Date	Title
DE68921811D1 (de)	1995-04-27	Akustische Oberflächenwellenanordnungen.
NL187091C (nl)	1991-05-16	Akoestische oppervlaktegolfresonator.
DE3778754D1 (de)	1992-06-11	Akustische oberflaechenwellenanordnung.
DE68914779D1 (de)	1994-05-26	Akustische Oberflächenwellenfilteranordnung.
DE3576894D1 (de)	1990-05-03	Resonator fuer akustische oberflaechenwellen.
DE3484568D1 (de)	1991-06-13	Akustisches filter.
DE68916308D1 (de)	1994-07-28	Akustisches Oberflächenwellenfilter.
DE3484786D1 (de)	1991-08-14	Akustischer wandler.
DE69112983D1 (de)	1995-10-19	Akustischer Oberflächenwellenresonator.
NO833702L (no)	1984-04-13	Interferometrisk sonar i ulineaer akustikk.
DE69133231D1 (de)	2003-05-08	Akustische Oberflächenwellenanordnung
DE69023707D1 (de)	1996-01-04	Akustische Oberflächenwellenanordnung.
KR840005297A (ko)	1984-11-05	전기 음향 변환기
DE3575248D1 (de)	1990-02-08	Akustische oberflaechen-wellen-anordnung.
DE3684026D1 (de)	1992-04-09	Akustischer oberflaechenwellenresonator.
DE69021918D1 (de)	1995-10-05	Akustische Oberflächenwellenanordnung.
NO165129C (no)	1990-12-27	Anordning for mottagning av akustiske boelger.
DK448583D0 (da)	1983-09-29	Akustisk overfladeboelgefoeler
DE3577351D1 (de)	1990-05-31	Spektralanalysator mit akustischen oberflaechenwellen.
DE3677241D1 (de)	1991-03-07	Akustisches oberflaechenwellenfilter.
DE3484680D1 (de)	1991-07-11	Akustischer oberflaechenwellenwandler.
DE3853513D1 (de)	1995-05-11	Akustische Oberflächenwellenanordnung.
DE3887813D1 (de)	1994-03-24	Akustische Oberflächenwellenanordnung.
DK524984A (da)	1985-05-05	Transducer
DE3485015D1 (de)	1991-10-10	Akustischer oberflaechenwellenresonator.