DE3700498C2 - - Google Patents

Info

Publication number
DE3700498C2
DE3700498C2 DE3700498A DE3700498A DE3700498C2 DE 3700498 C2 DE3700498 C2 DE 3700498C2 DE 3700498 A DE3700498 A DE 3700498A DE 3700498 A DE3700498 A DE 3700498A DE 3700498 C2 DE3700498 C2 DE 3700498C2
Authority
DE
Germany
Prior art keywords
interdigital
electrode
reflectors
lattice
interdigital transducer
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.)
Expired - Lifetime
Application number
DE3700498A
Other languages
German (de)
English (en)
Other versions
DE3700498A1 (de
Inventor
Takashi Yokosuka Kanagawa Jp Shiba
Norio Hosaka
Takemitsu Buma
Jun Yokohama Kanagawa Jp Yamada
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Publication of DE3700498A1 publication Critical patent/DE3700498A1/de
Application granted granted Critical
Publication of DE3700498C2 publication Critical patent/DE3700498C2/de
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 elements; Electromechanical resonators
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • H03H9/0285—Means for compensation or elimination of undesirable effects of reflections of triple transit echo
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; Electromechanical resonators
    • H03H9/25—Constructional features of resonators using surface acoustic waves

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DE19873700498 1986-01-10 1987-01-09 Oberflaechen-schallwellenresonator Granted DE3700498A1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61002037A JPH0646692B2 (ja) 1986-01-10 1986-01-10 弾性表面波共振子

Publications (2)

Publication Number Publication Date
DE3700498A1 DE3700498A1 (de) 1987-07-16
DE3700498C2 true DE3700498C2 (OSRAM) 1992-07-09

Family

ID=11518126

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19873700498 Granted DE3700498A1 (de) 1986-01-10 1987-01-09 Oberflaechen-schallwellenresonator

Country Status (3)

Country Link
US (1) US4760359A (OSRAM)
JP (1) JPH0646692B2 (OSRAM)
DE (1) DE3700498A1 (OSRAM)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229974A1 (de) * 1992-09-08 1994-03-10 Dresden Ev Inst Festkoerper Akustisches Oberflächenwellenbauelement
DE4408989A1 (de) * 1993-05-27 1994-12-01 Fujitsu Ltd Oberflächenakustikwellenfilter des Resonatortyps zum Reduzieren der Signalstärke einer Störspitze
DE19606690B4 (de) * 1995-03-03 2004-07-01 Murata Mfg. Co., Ltd., Nagaokakyo Oberflächenwellenresonator mit einer Transversalmodus-Welligkeit am Resonanzpunkt

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2982208B2 (ja) * 1990-03-30 1999-11-22 富士通株式会社 弾性表面波素子
US5212420A (en) * 1991-09-03 1993-05-18 Motorola, Inc. Method and apparatus for surface acoustic wave reflector grating
US5313177A (en) * 1992-04-06 1994-05-17 Motorola, Inc. Method and apparatus for an acoustic wave filter
US5274345A (en) * 1992-05-13 1993-12-28 Andersen Laboratories Dual function reflector structures for interdigital saw transducer
US6172582B1 (en) 1996-02-20 2001-01-09 Cts Corporation Saw resonator and ladder filter with specified number of reflector electrode fingers
JPH10276062A (ja) * 1997-03-31 1998-10-13 Sanyo Electric Co Ltd 弾性表面波デバイス
JP2006148622A (ja) * 2004-11-22 2006-06-08 Seiko Epson Corp 弾性表面波装置および電子機器
JP4412292B2 (ja) * 2006-02-06 2010-02-10 セイコーエプソン株式会社 弾性表面波装置および電子機器

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2030407B (en) * 1978-09-22 1982-12-08 Philips Electronic Associated Acustic wave resonators and filters
US4249146A (en) * 1979-02-23 1981-02-03 Trw Inc. Surface acoustic wave resonators utilizing harmonic frequencies
DE2909705C2 (de) * 1979-03-12 1984-09-06 Siemens AG, 1000 Berlin und 8000 München Akustische Oberflächenwellenanordnung
US4387355A (en) * 1980-06-13 1983-06-07 Nippon Telegraph & Telephone Public Corporation Surface acoustic wave resonator
US4353046A (en) * 1980-11-04 1982-10-05 R F Monolithics, Inc. Surface acoustic wave device with reflectors
JPS5958907A (ja) * 1982-09-29 1984-04-04 Hitachi Ltd 弾性表面波装置

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4229974A1 (de) * 1992-09-08 1994-03-10 Dresden Ev Inst Festkoerper Akustisches Oberflächenwellenbauelement
DE4408989A1 (de) * 1993-05-27 1994-12-01 Fujitsu Ltd Oberflächenakustikwellenfilter des Resonatortyps zum Reduzieren der Signalstärke einer Störspitze
DE19606690B4 (de) * 1995-03-03 2004-07-01 Murata Mfg. Co., Ltd., Nagaokakyo Oberflächenwellenresonator mit einer Transversalmodus-Welligkeit am Resonanzpunkt

Also Published As

Publication number Publication date
JPS62160807A (ja) 1987-07-16
JPH0646692B2 (ja) 1994-06-15
US4760359A (en) 1988-07-26
DE3700498A1 (de) 1987-07-16

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Legal Events

Date Code Title Description
8110 Request for examination paragraph 44
D2 Grant after examination
8364 No opposition during term of opposition