JPS5738017A - Unidirectional saw energizing device - Google Patents

Unidirectional saw energizing device

Info

Publication number
JPS5738017A
JPS5738017A JP11327280A JP11327280A JPS5738017A JP S5738017 A JPS5738017 A JP S5738017A JP 11327280 A JP11327280 A JP 11327280A JP 11327280 A JP11327280 A JP 11327280A JP S5738017 A JPS5738017 A JP S5738017A
Authority
JP
Japan
Prior art keywords
electrode pattern
thin film
upper electrode
oscillation
phase shifter
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
JP11327280A
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 JP11327280A priority Critical patent/JPS5738017A/en
Publication of JPS5738017A publication Critical patent/JPS5738017A/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 achieve a unidirectional transducer with less loss, by locating electrodes at both sides of piezoelectric thin film. CONSTITUTION:A weighted lower electrode pattern 12a is formed on a medium base plate 10 made of glass or the like. An oscillation piezoelectric thin film 11 made of zinc oxide is formed on the lower electrode pattern 12a and an upper electrode pattern 12b is formed on a thin film 11. The lower and upper electrode patterns 12a, 12b are formed shifted by lambda/4. The oscillation and phase characteristics can be set arbitrarily by suitably setting an envelope (chain line) which represents the depth of meshing of the electrodes 12a, 12b. A 90 deg. phase shifter 9 is provided to energize elastic surfae waves with this electrode pattern and the output of the phase shifter 9 is applied to the upper electrode 12a.
JP11327280A 1980-08-18 1980-08-18 Unidirectional saw energizing device Pending JPS5738017A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11327280A JPS5738017A (en) 1980-08-18 1980-08-18 Unidirectional saw energizing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11327280A JPS5738017A (en) 1980-08-18 1980-08-18 Unidirectional saw energizing device

Publications (1)

Publication Number Publication Date
JPS5738017A true JPS5738017A (en) 1982-03-02

Family

ID=14607960

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11327280A Pending JPS5738017A (en) 1980-08-18 1980-08-18 Unidirectional saw energizing device

Country Status (1)

Country Link
JP (1) JPS5738017A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0697756A (en) * 1983-10-14 1994-04-08 Uk Government Acoustic converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123121A (en) * 1980-03-05 1981-09-28 Nippon Hoso Kyokai <Nhk> Elastic surface wave device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123121A (en) * 1980-03-05 1981-09-28 Nippon Hoso Kyokai <Nhk> Elastic surface wave device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0697756A (en) * 1983-10-14 1994-04-08 Uk Government Acoustic converter
JPH09107261A (en) * 1983-10-14 1997-04-22 Uk Government Acoustic wave converter

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