JPS5541048A - Surface acoustic wave element - Google Patents

Surface acoustic wave element

Info

Publication number
JPS5541048A
JPS5541048A JP11433278A JP11433278A JPS5541048A JP S5541048 A JPS5541048 A JP S5541048A JP 11433278 A JP11433278 A JP 11433278A JP 11433278 A JP11433278 A JP 11433278A JP S5541048 A JPS5541048 A JP S5541048A
Authority
JP
Japan
Prior art keywords
surface acoustic
substrate
slope
wave
acoustic waves
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.)
Pending
Application number
JP11433278A
Other languages
Japanese (ja)
Inventor
Hitoshi Suzuki
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura Electric 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP11433278A priority Critical patent/JPS5541048A/en
Publication of JPS5541048A publication Critical patent/JPS5541048A/en
Pending 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
    • H03H9/02543—Characteristics of substrate, e.g. cutting angles
    • 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

Abstract

PURPOSE:To enable to effectively suppress the spurious by transversal wave mode, by giving slope or roundness to the side surface along the surface wave delivery path between the transducers of piezoelectric substrate. CONSTITUTION:On the surface of the piezoelectric substrate 11, the transducer 12 converting electric signal into surface acoustic waves and the transducer 13 converting the surface acoustic waves into electric signal are provided opposingly with a given distance. Slope or roundness is formed along the surface acoustic wave delivery path between the transducers 12 and 13 on the substrate 11. With this constitution, the transversal wave mode having displacement component close to parallelism on the surface of the substrate 11 as the bulk wave of the surface acoustic waves is reflected toward different direction at the slope of the side surface of the substrate 11 to produce the mode conversion. Further, the surface acoustic wave toward the side surface of the substrate 11 is reflected toward different direction at the slope due to diffraction efficiency. Thus, the spurious by transversal wave mode can effectively be restricted.
JP11433278A 1978-09-18 1978-09-18 Surface acoustic wave element Pending JPS5541048A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11433278A JPS5541048A (en) 1978-09-18 1978-09-18 Surface acoustic wave element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11433278A JPS5541048A (en) 1978-09-18 1978-09-18 Surface acoustic wave element

Publications (1)

Publication Number Publication Date
JPS5541048A true JPS5541048A (en) 1980-03-22

Family

ID=14635151

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11433278A Pending JPS5541048A (en) 1978-09-18 1978-09-18 Surface acoustic wave element

Country Status (1)

Country Link
JP (1) JPS5541048A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877921U (en) * 1981-11-19 1983-05-26 沖電気工業株式会社 surface acoustic wave device
JPS60109916A (en) * 1983-11-18 1985-06-15 Pioneer Electronic Corp Surface acoustic wave element and its manufacture
JPH0217709A (en) * 1988-07-06 1990-01-22 Matsushita Electric Ind Co Ltd Surface acoustic wave resonator
WO2005099090A1 (en) * 2004-04-08 2005-10-20 Murata Manufacturing Co., Ltd. Surface acoustic wave filter and manufacturing method thereof

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5877921U (en) * 1981-11-19 1983-05-26 沖電気工業株式会社 surface acoustic wave device
JPS60109916A (en) * 1983-11-18 1985-06-15 Pioneer Electronic Corp Surface acoustic wave element and its manufacture
JPH0217709A (en) * 1988-07-06 1990-01-22 Matsushita Electric Ind Co Ltd Surface acoustic wave resonator
WO2005099090A1 (en) * 2004-04-08 2005-10-20 Murata Manufacturing Co., Ltd. Surface acoustic wave filter and manufacturing method thereof
US7397327B2 (en) 2004-04-08 2008-07-08 Murata Manufacturing Co., Ltd. Surface acoustic wave filter and method of producing the same
CN100463365C (en) * 2004-04-08 2009-02-18 株式会社村田制作所 Surface acoustic wave filter and manufacturing method thereof
EP1734654A4 (en) * 2004-04-08 2009-12-23 Murata Manufacturing Co Surface acoustic wave filter and manufacturing method thereof

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