JPS5676621A - Elastic surface wave filter - Google Patents

Elastic surface wave filter

Info

Publication number
JPS5676621A
JPS5676621A JP15365579A JP15365579A JPS5676621A JP S5676621 A JPS5676621 A JP S5676621A JP 15365579 A JP15365579 A JP 15365579A JP 15365579 A JP15365579 A JP 15365579A JP S5676621 A JPS5676621 A JP S5676621A
Authority
JP
Japan
Prior art keywords
surface wave
wave filter
coupler
elastic surface
enable
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
JP15365579A
Other languages
Japanese (ja)
Inventor
Yoshihiro Imazeki
Junji Inui
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 Ltd
Original Assignee
Fujitsu 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 Ltd filed Critical Fujitsu Ltd
Priority to JP15365579A priority Critical patent/JPS5676621A/en
Publication of JPS5676621A publication Critical patent/JPS5676621A/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
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02905—Measures for separating propagation paths on substrate

Landscapes

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

Abstract

PURPOSE:To enable to form the minute pattern high in position accuracy, by providing the reflection band of surface wave energy at the center of multistrip coupler. CONSTITUTION:Between a transmission electrode 2 and a reception electrodce 3, a multistrip coupler 6 is provided and the electrodes 2 and 3 are asymmetrically arranged. Further, the parts different in elastic modulus are provided at the center of the coupler 6 with ion implantation, and they form the reflection band of surface energy produced by the electrode 2. Thus, the position accuracy is greater than coating of surface wave absorbing material to enable to form minute pattern.
JP15365579A 1979-11-29 1979-11-29 Elastic surface wave filter Pending JPS5676621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15365579A JPS5676621A (en) 1979-11-29 1979-11-29 Elastic surface wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15365579A JPS5676621A (en) 1979-11-29 1979-11-29 Elastic surface wave filter

Publications (1)

Publication Number Publication Date
JPS5676621A true JPS5676621A (en) 1981-06-24

Family

ID=15567276

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15365579A Pending JPS5676621A (en) 1979-11-29 1979-11-29 Elastic surface wave filter

Country Status (1)

Country Link
JP (1) JPS5676621A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190117A (en) * 1982-04-19 1983-11-07 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Acoustic surface wave device and band filter with same

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58190117A (en) * 1982-04-19 1983-11-07 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン Acoustic surface wave device and band filter with same
JPH0410765B2 (en) * 1982-04-19 1992-02-26

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