BE878906A - Resonateur pour ondes acoustiques - Google Patents

Resonateur pour ondes acoustiques

Info

Publication number: BE878906A
Authority: BE; Belgium
Prior art keywords: acoustic wave; wave resonator; resonator; acoustic; wave
Prior art date: 1978-09-22

Application number

BE0/197242A

Other languages

English (en)

Original Assignee

Philips 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.)

1978-09-22

Filing date

1979-09-20

Publication date

1980-03-20

1979-09-20 Application filed by Philips Nv filed Critical Philips Nv

1980-03-20 Publication of BE878906A publication Critical patent/BE878906A/fr

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
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/644—Coupled resonator filters having two acoustic tracks
- H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
- H03H9/6469—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes
- H03H9/6473—Coupled resonator filters having two acoustic tracks being electrically coupled via two connecting electrodes the electrodes being electrically interconnected
- 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
- H03H9/02779—Continuous surface reflective arrays
- 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
- H03H9/46—Filters
- H03H9/64—Filters using surface acoustic waves
- H03H9/6423—Means for obtaining a particular transfer characteristic
- H03H9/6433—Coupled resonator filters
- H03H9/644—Coupled resonator filters having two acoustic tracks
- H03H9/6456—Coupled resonator filters having two acoustic tracks being electrically coupled
- H03H9/6459—Coupled resonator filters having two acoustic tracks being electrically coupled via one connecting electrode
- 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
- H03H9/14544—Transducers of particular shape or position
- H03H9/1455—Transducers of particular shape or position constituted of N parallel or series transducers

Landscapes

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

BE0/197242A 1978-09-22 1979-09-20 Resonateur pour ondes acoustiques BE878906A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
GB7837798A GB2030407B (en)	1978-09-22	1978-09-22	Acustic wave resonators and filters

Publications (1)

Publication Number	Publication Date
BE878906A true BE878906A (fr)	1980-03-20

Family

ID=10499847

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE0/197242A BE878906A (fr)	1978-09-22	1979-09-20	Resonateur pour ondes acoustiques

Country Status (10)

Country	Link
US (1)	US4281301A (fr)
JP (1)	JPS5547718A (fr)
AU (1)	AU524913B2 (fr)
BE (1)	BE878906A (fr)
CA (1)	CA1149033A (fr)
DE (1)	DE2937775A1 (fr)
ES (1)	ES484318A1 (fr)
FR (1)	FR2437108A1 (fr)
GB (1)	GB2030407B (fr)
SE (1)	SE436817B (fr)

Families Citing this family (24)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US4353046A (en) *	1980-11-04	1982-10-05	R F Monolithics, Inc.	Surface acoustic wave device with reflectors
US4331943A (en) *	1980-12-22	1982-05-25	Hewlett-Packard Company	Acoustic wave devices having transverse mode distortions eliminated structurally
US4599532A (en) *	1984-07-05	1986-07-08	Clarion Co., Ltd.	Surface acoustic wave device with anti-reflection electrode structure
JPH0646692B2 (ja) *	1986-01-10	1994-06-15	株式会社日立製作所	弾性表面波共振子
US4731595A (en) *	1986-01-24	1988-03-15	Rf Monolithics, Inc.	Resonator structure
JPS62284509A (ja) *	1986-06-02	1987-12-10	Murata Mfg Co Ltd	弾性表面波共振子
JPH073695Y2 (ja) *	1987-08-03	1995-01-30	三菱電機株式会社	弾性表面波反射器
US4945354A (en) *	1988-11-25	1990-07-31	Gte Products	Spurious signal correction for surface acoustic wave (SAW) security devices
DE3942140A1 (de) *	1989-12-20	1991-06-27	Siemens Ag	Oberflaechenwellen-reflektorfilter
DE3942148A1 (de) *	1989-12-20	1991-06-27	Siemens Ag	Oberflaechenwellen-reflektorfilter
US5051644A (en) *	1990-04-19	1991-09-24	R. F. Monolithics, Inc.	Electrode structure with constant velocity and predetermined reflectivity
JPH04346507A (ja) *	1991-04-17	1992-12-02	Rf Monolithics Inc	表面弾性波の一定速度と所定の反射性とを有する電極構造とその構成方法
US5270606A (en) *	1991-07-22	1993-12-14	Motorola, Inc.	Processing robust acoustic reflectors
US5296824A (en) *	1991-12-02	1994-03-22	Motorola, Inc.	Low loss wide bandwidth parallel channel acoustic filter
KR0148749B1 (ko) *	1992-10-14	1998-08-17	모리시다 요오이찌	필터 및 그 제조방법
US5703427A (en) *	1993-03-19	1997-12-30	Thomson-Csf	Surface-wave distributed acoustic reflection transducer and filter including such a transducer
TW256966B (fr) *	1994-03-04	1995-09-11	Murata Manufacturing Co
JP3239064B2 (ja)	1996-05-28	2001-12-17	富士通株式会社	弾性表面波装置
JP2000165184A (ja)	1998-11-20	2000-06-16	Fujitsu Ltd	弾性表面波素子
JP2003258595A (ja) *	2002-02-27	2003-09-12	Fujitsu Media Device Kk	弾性表面波装置
JP4273935B2 (ja) *	2003-01-24	2009-06-03	株式会社村田製作所	弾性表面波装置、通信装置
US6836197B2 (en)	2003-02-28	2004-12-28	Northrop Grumman Corporation	Dual track SAW reflector filter using weighted reflective gratings
US6842091B2 (en) *	2003-02-28	2005-01-11	Northrop Grumman Corporation	Weighted SAW reflector grating using dithered acoustic reflectors
US6847272B2 (en) *	2003-02-28	2005-01-25	Northrop Grumman Corporation	Weighted SAW reflector using distributed acoustic reflective dots

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
JPS4991349A (fr) *	1972-12-29	1974-08-31
US3886504A (en) *	1974-05-20	1975-05-27	Texas Instruments Inc	Acoustic surface wave resonator devices
GB1484859A (en) *	1974-09-12	1977-09-08	Marconi Co Ltd	Dispersive delay lines
US3961293A (en) *	1975-02-03	1976-06-01	Texas Instruments Incorporated	Multi-resonant surface wave resonator
GB1513466A (en) *	1975-09-19	1978-06-07	Mullard Ltd	Acoustic surface wave devices
US4155057A (en) *	1976-03-19	1979-05-15	Raytheon Company	Surface acoustic wave ring filter
JPS52149459A (en) *	1976-06-08	1977-12-12	Toyo Communication Equip	Surface acoustic wave filter
US4155056A (en) *	1977-08-25	1979-05-15	Bell Telephone Laboratories, Incorporated	Cascaded grating resonator filters with external input-output couplers
US4162466A (en) *	1977-09-28	1979-07-24	University Of Illinois Foundation	Surface acoustic wave resonator

1978
- 1978-09-22 GB GB7837798A patent/GB2030407B/en not_active Expired
1979
- 1979-09-12 US US06/074,694 patent/US4281301A/en not_active Expired - Lifetime
- 1979-09-13 CA CA000335570A patent/CA1149033A/fr not_active Expired
- 1979-09-18 AU AU50934/79A patent/AU524913B2/en not_active Ceased
- 1979-09-19 DE DE19792937775 patent/DE2937775A1/de not_active Withdrawn
- 1979-09-19 SE SE7907771A patent/SE436817B/sv unknown
- 1979-09-20 BE BE0/197242A patent/BE878906A/fr not_active IP Right Cessation
- 1979-09-20 ES ES484318A patent/ES484318A1/es not_active Expired
- 1979-09-21 FR FR7923576A patent/FR2437108A1/fr not_active Withdrawn
- 1979-09-22 JP JP12159979A patent/JPS5547718A/ja active Pending

Also Published As

Publication number	Publication date
DE2937775A1 (de)	1980-04-03
CA1149033A (fr)	1983-06-28
SE436817B (sv)	1985-01-21
AU524913B2 (en)	1982-10-07
GB2030407A (en)	1980-04-02
FR2437108A1 (fr)	1980-04-18
GB2030407B (en)	1982-12-08
JPS5547718A (en)	1980-04-04
AU5093479A (en)	1980-03-27
SE7907771L (sv)	1980-03-23
ES484318A1 (es)	1980-04-16
US4281301A (en)	1981-07-28

Publication	Publication Date	Title
BE878906A (fr)	1980-03-20	Resonateur pour ondes acoustiques
NL187091C (nl)	1991-05-16	Akoestische oppervlaktegolfresonator.
FR2405589B1 (fr)	1985-09-27	Resonateur pour ondes acoustiques
FR2379941B1 (fr)	1985-10-31	Resonateur d'ondes de surface acoustiques
DK164979A (da)	1979-10-22	Ultrasonisk resonansvibrator
AT384113B (de)	1987-10-12	Optischer wellenmodenmischer
BE827630A (fr)	1975-07-31	Resonateurs pour ondes electriques
DK180779A (da)	1979-11-04	Ultralyd-skanderingsapparat
FR2392545B1 (fr)	1986-02-07	Composant a ondes superficielles acoustiques notamment pour filtres acoustiques
DE3068877D1 (en)	1984-09-13	Surface acoustic wave resonator device
GB2018079B (en)	1982-08-18	Filters comprising coupled acoustic wave resonators
FR2302656A1 (fr)	1976-09-24	Transducteur piezoelectrique pour basses frequences
BE861353A (fr)	1978-03-16	Filtre pour des ondes electromagnetiques tres courtes
NL190593C (nl)	1994-05-02	Piëzo-elektrische resonator.
FR2335904A1 (fr)	1977-07-15	Cornet pour la transmission d'ondes ultrasonores
FR2435860B1 (fr)	1986-03-07	Synthetiseur numerique de frequence
BR7902346A (pt)	1979-10-23	Transdutor
BE879590A (fr)	1980-04-23	Resonateur piezoelectrique
BE862063A (fr)	1978-04-14	Filtre pour des ondes electromagnetiques tres courtes
DE3485015D1 (de)	1991-10-10	Akustischer oberflaechenwellenresonator.
BE887091A (fr)	1981-07-15	Resonateur piezo-electrique
MX144739A (es)	1981-11-18	Conjunto resonador mejorado
NO145554C (no)	1982-04-14	Elektroakustisk transduser
FR2533090B1 (fr)	1985-07-05	Resonateur a ondes de surface
GB2019147B (en)	1982-05-19	Microwave acoustic wave oscillator

Legal Events

Date	Code	Title	Description
1986-03-31	RE	Patent lapsed	Owner name: N.V. PHILIPS' GLOEILAMPENFABRIEKEN Effective date: 19850930

Date

Code

Title

Description

1986-03-31

Patent lapsed

Owner name: N.V. PHILIPS' GLOEILAMPENFABRIEKEN

Effective date: 19850930