DE3684765D1 - Oberflaechenwellenresonator oder resonatorfilter. - Google Patents

Oberflaechenwellenresonator oder resonatorfilter.

Info

Publication number: DE3684765D1
Authority: DE; Germany
Prior art keywords: resonator; surface wave; filter; wave resonator; resonator filter
Prior art date: 1985-12-05
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

DE8686309326T

Other languages

English (en)

Inventor

Peter V Wright

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.)

RF Monolithics Inc

Original Assignee

RF Monolithics Inc

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.)

1985-12-05

Filing date

1986-11-28

Publication date

1992-05-14

1986-11-28 Application filed by RF Monolithics Inc filed Critical RF Monolithics Inc

1992-05-14 Application granted granted Critical

1992-05-14 Publication of DE3684765D1 publication Critical patent/DE3684765D1/de

2006-11-29 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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 elements; Electromechanical resonators
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/6436—Coupled resonator filters having one acoustic track only
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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
- H03H9/14517—Means for weighting
- H03H9/14526—Finger withdrawal

Landscapes

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

DE8686309326T 1985-12-05 1986-11-28 Oberflaechenwellenresonator oder resonatorfilter. Expired - Lifetime DE3684765D1 (de)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
US06/804,855 US4616197A (en)	1985-12-05	1985-12-05	Resonator

Publications (1)

Publication Number	Publication Date
DE3684765D1 true DE3684765D1 (de)	1992-05-14

Family

ID=25190023

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
DE8686309326T Expired - Lifetime DE3684765D1 (de)	1985-12-05	1986-11-28	Oberflaechenwellenresonator oder resonatorfilter.

Country Status (4)

Country	Link
US (1)	US4616197A (de)
EP (1)	EP0226372B1 (de)
JP (1)	JP2703891B2 (de)
DE (1)	DE3684765D1 (de)

Families Citing this family (23)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4731595A (en) *	1986-01-24	1988-03-15	Rf Monolithics, Inc.	Resonator structure
DE3777023D1 (de) *	1986-08-29	1992-04-09	Siemens Ag	Wandler fuer eine filteranordnung mit akustischen wellen.
US4965479A (en) *	1987-01-12	1990-10-23	Hewlett-Packard Company	Surface transverse wave resonator
WO1990005409A1 (en) *	1988-11-04	1990-05-17	Cosmo Holdings Pty. Limited	Surface acoustic wave devices
US5028831A (en) *	1990-04-04	1991-07-02	Motorola, Inc.	SAW reflectionless quarter-wavelength transducers
US5051644A (en) *	1990-04-19	1991-09-24	R. F. Monolithics, Inc.	Electrode structure with constant velocity and predetermined reflectivity
DE4114202A1 (de) *	1991-04-30	1992-11-05	Siemens Ag	Zweitor-resonator mit verringerten nebenmaxima
US5287036A (en) *	1992-03-02	1994-02-15	Motorola, Inc.	Method and apparatus for acoustic wave inductance
US5274345A (en) *	1992-05-13	1993-12-28	Andersen Laboratories	Dual function reflector structures for interdigital saw transducer
US5789990A (en) *	1996-02-14	1998-08-04	Rf Monolithics, Inc.	Feedback oscillator circuit using a saw resonator filter
DE19638451A1 (de) *	1996-09-19	1998-04-02	Siemens Matsushita Components	Reaktanzfilter mit OFW-Resonatoren
WO1998027647A1 (en) *	1996-12-18	1998-06-25	Northern Telecom Limited	Surface wave device filters using resonant single phase unidirectional transducers
DE19724259C2 (de)	1997-06-09	2002-11-14	Epcos Ag	Dualmode-Oberflächenwellenfilter
NO984653L (no) *	1998-10-05	2000-04-06	Alsthom Cge Alcatel	Overflateakustisk bølgetransduser
JP3371849B2 (ja)	1999-04-28	2003-01-27	株式会社村田製作所	Ｓａｗ共振子、複合ｓａｗフィルタ及びｓａｗフィルタ
US7002281B2 (en)	2003-07-16	2006-02-21	Biode Inc.	Multi-reflective acoustic wave device
CN1981434B (zh)	2004-07-06	2011-10-26	精工爱普生株式会社	谐振器型saw滤波器
CN100355182C (zh) *	2004-09-01	2007-12-12	重庆大学	一种电磁能自供电传感器
DE102007010040B4 (de) *	2007-03-01	2014-08-07	Epcos Ag	Mit Oberflächenwellen arbeitendes DMS-Filter
US7569971B2 (en) *	2007-10-02	2009-08-04	Delaware Capital Formation, Inc.	Compensation of resonators for substrate and transducer asymmetry
US9484471B2 (en) *	2014-09-12	2016-11-01	Qorvo Us, Inc.	Compound varactor
JP5999856B2 (ja) *	2015-06-01	2016-09-28	スカイワークスフィルターソリューションズジャパン株式会社	弾性波素子
US10697875B2 (en)	2017-01-26	2020-06-30	THE CURATORS OF THE UNIVERSITY OF MlSSOURI	System and method for in-situ measurement of viscoelastic material properties using continuous-wave ultrasound

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4144507A (en) *	1976-09-29	1979-03-13	Texas Instruments Incorporated	Surface acoustic wave resonator incorporating coupling transducer into reflecting arrays
US4254387A (en) *	1977-10-06	1981-03-03	U.S. Philips Corporation	Acoustic wave devices
GB2117593B (en) *	1982-03-31	1985-11-27	Marconi Co Ltd	Adjusting the frequency response of surface acoustic wave devices
US4454488A (en) *	1982-07-08	1984-06-12	R F Monolithics, Inc.	Surface acoustic wave resonator with middle grating

1985
- 1985-12-05 US US06/804,855 patent/US4616197A/en not_active Expired - Lifetime
1986
- 1986-11-28 EP EP86309326A patent/EP0226372B1/de not_active Expired
- 1986-11-28 DE DE8686309326T patent/DE3684765D1/de not_active Expired - Lifetime
- 1986-12-05 JP JP61289091A patent/JP2703891B2/ja not_active Expired - Lifetime

Also Published As

Publication number	Publication date
JPS62188512A (ja)	1987-08-18
JP2703891B2 (ja)	1998-01-26
EP0226372A3 (en)	1988-10-05
US4616197A (en)	1986-10-07
EP0226372B1 (de)	1992-04-08
EP0226372A2 (de)	1987-06-24

Publication	Publication Date	Title
DE3684765D1 (de)	1992-05-14	Oberflaechenwellenresonator oder resonatorfilter.
DE3670955D1 (de)	1990-06-13	Filtergefuege.
NL187091C (nl)	1991-05-16	Akoestische oppervlaktegolfresonator.
DE3688687D1 (de)	1993-08-19	Zusatzresonator.
DE68916308D1 (de)	1994-07-28	Akustisches Oberflächenwellenfilter.
DE3778754D1 (de)	1992-06-11	Akustische oberflaechenwellenanordnung.
DE3684026D1 (de)	1992-04-09	Akustischer oberflaechenwellenresonator.
DE3689047D1 (de)	1993-10-21	Bandfilter.
DE3677241D1 (de)	1991-03-07	Akustisches oberflaechenwellenfilter.
DE3575248D1 (de)	1990-02-08	Akustische oberflaechen-wellen-anordnung.
DE3587959D1 (de)	1995-01-19	Akustischer Oberflächenwellen-Spektrumanalysator.
DE3582632D1 (de)	1991-05-29	Faserbettfilter.
DE3585450D1 (de)	1992-04-09	Oszillator.
DE3484450D1 (de)	1991-05-23	Piezoelektrischer resonator.
KR860004486A (ko)	1986-06-23	마이크로파 필터
FR2562352B1 (fr)	1989-10-20	Resonateur piezo-electrique
DE3485015D1 (de)	1991-10-10	Akustischer oberflaechenwellenresonator.
DK105785D0 (da)	1985-03-07	Resonator
DE58903754D1 (de)	1993-04-15	Oberflaechenwellenfilter.
DE3689704D1 (de)	1994-04-14	Steuerbarer Oszillator.
DE3482639D1 (de)	1990-08-09	Akustische oberflaechenwellenanordnung.
DE3676442D1 (de)	1991-02-07	Adaptiver filter.
DE3583602D1 (de)	1991-08-29	Elektrisches oberflaechenwellenfilter.
DE3674468D1 (de)	1990-10-31	Resonatoranordnung.
DE3485238D1 (de)	1991-12-12	Akustische oberflaechenwellenanordnung.

Legal Events

Date	Code	Title	Description
1993-05-06	8364	No opposition during term of opposition