FR2363937A1 - Dispositif a ondes acoustiques de surface - Google Patents

Dispositif a ondes acoustiques de surface

Info

Publication number
FR2363937A1
FR2363937A1 FR7726854A FR7726854A FR2363937A1 FR 2363937 A1 FR2363937 A1 FR 2363937A1 FR 7726854 A FR7726854 A FR 7726854A FR 7726854 A FR7726854 A FR 7726854A FR 2363937 A1 FR2363937 A1 FR 2363937A1
Authority
FR
France
Prior art keywords
surface acoustic
transducer
acoustic wave
wave device
transducers
Prior art date
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.)
Granted
Application number
FR7726854A
Other languages
English (en)
Other versions
FR2363937B1 (fr
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing Co 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.)
Filing date
Publication date
Application filed by Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Publication of FR2363937A1 publication Critical patent/FR2363937A1/fr
Application granted granted Critical
Publication of FR2363937B1 publication Critical patent/FR2363937B1/fr
Granted 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
    • H03H9/30—Time-delay networks
    • 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
    • H03H9/14544—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)

Abstract

L'invention concerne les transducteurs qui convertissent de l'énergie électrique en ondes acoustiques de surface, et inversement. Le transducteur 6 est caractérisé par une longueur d'entrelacement entre les paires d'électrodes qui varie entre les extrémités et la partie centrale du réseau d'électrodes. Cette configuration permet d'augmenter l'impédance capacitive que présente le transducteur, sans provoquer une expansion parasite de l'énergie vibratoire émise. Application aux filtres à fréquence intermédiaire des récepteurs de télévision.
FR7726854A 1976-09-03 1977-09-05 Dispositif a ondes acoustiques de surface Granted FR2363937A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP10609876A JPS5330848A (en) 1976-09-03 1976-09-03 Surface acoustic wave device
JP52004778A JPS5834049B2 (ja) 1976-09-03 1977-01-18 弾性表面波装置

Publications (2)

Publication Number Publication Date
FR2363937A1 true FR2363937A1 (fr) 1978-03-31
FR2363937B1 FR2363937B1 (fr) 1983-01-07

Family

ID=26338613

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7726854A Granted FR2363937A1 (fr) 1976-09-03 1977-09-05 Dispositif a ondes acoustiques de surface

Country Status (5)

Country Link
US (1) US4143343A (fr)
JP (2) JPS5330848A (fr)
DE (1) DE2739688A1 (fr)
FR (1) FR2363937A1 (fr)
GB (1) GB1536614A (fr)

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4223284A (en) * 1977-11-07 1980-09-16 Murata Manufacturing Co., Ltd. Acoustic surface wave device
JPS56123117A (en) * 1980-03-05 1981-09-28 Murata Mfg Co Ltd Elastic surface wave device
JPS55141813A (en) * 1979-04-24 1980-11-06 Murata Mfg Co Ltd Surface acoustic wave device
JPS56123118A (en) * 1980-03-05 1981-09-28 Murata Mfg Co Ltd Elastic surface wave device
JPS564917A (en) * 1979-06-25 1981-01-19 Murata Mfg Co Ltd Elastic surface wave filter
JPS57202114A (en) * 1981-06-05 1982-12-10 Hitachi Ltd Band pass filter
JPS58154917A (ja) * 1982-03-10 1983-09-14 Hitachi Ltd 弾性表面波バンドパスフイルタ
JPS6216728U (fr) * 1985-07-15 1987-01-31
JPS63309727A (ja) * 1987-06-10 1988-12-16 Yanmar Diesel Engine Co Ltd 排気タ−ボ過給機付内燃機関の排気ガス処理装置
GB2239144A (en) * 1989-12-16 1991-06-19 Plessey Co Plc Surface acoustic wave transducer
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
DE69700938T2 (de) 1996-05-23 2000-05-04 Matsushita Electric Industrial Co., Ltd. Akustischer Oberflächenwellenfilter und mehrstufiger akustischer Oberflächenwellenfilter
US6348845B2 (en) 1996-05-23 2002-02-19 Matsushita Electric Industrial Co., Ltd. Surface acoustic wave filter and multistage surface acoustic wave filter
DE69838727T2 (de) * 1997-07-07 2008-03-06 Matsushita Electric Industrial Co., Ltd., Kadoma Ptc thermistorchip sowie seine herstellungsmethode
WO2008038481A1 (fr) * 2006-09-28 2008-04-03 Murata Manufacturing Co., Ltd. Filtre d'onde acoustique
JP5350720B2 (ja) * 2008-09-02 2013-11-27 太陽誘電株式会社 弾性波デバイス、及び弾性波装置

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600710A (en) * 1968-08-12 1971-08-17 Zenith Radio Corp Acoustic surface wave filter

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036374A5 (fr) * 1969-03-12 1970-12-24 Thomson Csf
US3675054A (en) * 1970-12-02 1972-07-04 Texas Instruments Inc Series connection of interdigitated surface wave transducers
GB1389337A (en) * 1972-10-05 1975-04-03 Marconi Co Ltd Dispersive delay devices

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3600710A (en) * 1968-08-12 1971-08-17 Zenith Radio Corp Acoustic surface wave filter

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NV8030/73 *

Also Published As

Publication number Publication date
JPS5834049B2 (ja) 1983-07-23
US4143343A (en) 1979-03-06
JPS5389643A (en) 1978-08-07
DE2739688A1 (de) 1978-03-09
JPS5330848A (en) 1978-03-23
DE2739688C2 (fr) 1988-07-21
JPS5622164B2 (fr) 1981-05-23
GB1536614A (en) 1978-12-20
FR2363937B1 (fr) 1983-01-07

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