JPS5738018A - Unidirectional saw energizing device - Google Patents

Unidirectional saw energizing device

Info

Publication number
JPS5738018A
JPS5738018A JP11327380A JP11327380A JPS5738018A JP S5738018 A JPS5738018 A JP S5738018A JP 11327380 A JP11327380 A JP 11327380A JP 11327380 A JP11327380 A JP 11327380A JP S5738018 A JPS5738018 A JP S5738018A
Authority
JP
Japan
Prior art keywords
thin film
reed screen
electrodes
piezoelectric thin
unidirectional
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
JP11327380A
Other languages
Japanese (ja)
Inventor
Toshiyuki Kaeriyama
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.)
Fujitsu General Ltd
Gen Co Ltd
Original Assignee
Fujitsu General Ltd
Gen 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 Fujitsu General Ltd, Gen Co Ltd filed Critical Fujitsu General Ltd
Priority to JP11327380A priority Critical patent/JPS5738018A/en
Publication of JPS5738018A publication Critical patent/JPS5738018A/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
    • H03H9/125—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
    • H03H9/14508—Polyphase SAW transducers

Landscapes

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

Abstract

PURPOSE:To avoid crossing of electrode, by providing two electrodes out of three per one section on one side of piezoelectric thin film and another one on another side of piezoelectric thin film, in a unidirectional elastic surface wave energizing divice using a 120 deg. phase difference reed screen electrode. CONSTITUTION:On a medium base of glass 10, reed screen electrodes 1211, 1212... of 0 deg. and reed screen electrodes 1221, 1222... of 120 deg. are formed. A piezoelectric thin film 11 made of zinc oxide is formed with sputtering on it. The film thickness of the thin film 11 is taken as 3% of elastic surface wave filter wavelength. Reed screen electrodes 1231, 1232... of 240 deg. are formed on the upper surface of the film 11. When the reed screen electrodes are coupled to a 120 deg. phase shifter 6 which produces an alternative electric field with 120 deg. phase difference, unidirectional energizing can be made.
JP11327380A 1980-08-18 1980-08-18 Unidirectional saw energizing device Pending JPS5738018A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11327380A JPS5738018A (en) 1980-08-18 1980-08-18 Unidirectional saw energizing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11327380A JPS5738018A (en) 1980-08-18 1980-08-18 Unidirectional saw energizing device

Publications (1)

Publication Number Publication Date
JPS5738018A true JPS5738018A (en) 1982-03-02

Family

ID=14607988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11327380A Pending JPS5738018A (en) 1980-08-18 1980-08-18 Unidirectional saw energizing device

Country Status (1)

Country Link
JP (1) JPS5738018A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142017A (en) * 1981-02-27 1982-09-02 Clarion Co Ltd Surface acoustic wave device
JPS58145213A (en) * 1982-02-01 1983-08-30 Clarion Co Ltd Surface acoustic wave device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54129896A (en) * 1977-03-26 1979-10-08 Kimio Shibayama Piezooelectric thin film blind electrode elastic surface wave converter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS54129896A (en) * 1977-03-26 1979-10-08 Kimio Shibayama Piezooelectric thin film blind electrode elastic surface wave converter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57142017A (en) * 1981-02-27 1982-09-02 Clarion Co Ltd Surface acoustic wave device
JPS58145213A (en) * 1982-02-01 1983-08-30 Clarion Co Ltd Surface acoustic wave device
JPH0338769B2 (en) * 1982-02-01 1991-06-11 Clarion Co Ltd

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