JPS56158519A - Elastic surface wave device - Google Patents

Elastic surface wave device

Info

Publication number
JPS56158519A
JPS56158519A JP6238480A JP6238480A JPS56158519A JP S56158519 A JPS56158519 A JP S56158519A JP 6238480 A JP6238480 A JP 6238480A JP 6238480 A JP6238480 A JP 6238480A JP S56158519 A JPS56158519 A JP S56158519A
Authority
JP
Japan
Prior art keywords
electrodes
electrode
unit electrodes
ridges
outermost
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.)
Granted
Application number
JP6238480A
Other languages
Japanese (ja)
Other versions
JPH0214811B2 (en
Inventor
Koichi Nishimura
Yutaka Abe
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.)
Maruyasu Industries Co Ltd
Original Assignee
Maruyasu Industries 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 Maruyasu Industries Co Ltd filed Critical Maruyasu Industries Co Ltd
Priority to JP6238480A priority Critical patent/JPS56158519A/en
Publication of JPS56158519A publication Critical patent/JPS56158519A/en
Publication of JPH0214811B2 publication Critical patent/JPH0214811B2/ja
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 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
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14573—Arrow type transducers
    • 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
    • H03H9/14544—Transducers of particular shape or position
    • 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
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14576—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger
    • H03H9/14579—Transducers whereby only the last fingers have different characteristics with respect to the other fingers, e.g. different shape, thickness or material, split finger the last fingers having a different shape
    • 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
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation

Landscapes

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

Abstract

PURPOSE:To make the design easy, by setting both the outermost ridges of a comb- shaped electrode with a slope to a signal transmitting direction. CONSTITUTION:A base 10 is formed with a rectangular plate of quartz, piezoelectric porcelain device or the like, and an input converter 11 is to convert an electric signal into a mechanical signal and consists of one set of comb-shaped thin film electrodes 12, 13. Further, the electrodes 12, 13 are combined so that a number of unit electrodes 12a, 13a of the electrodes are alternately adjacent and the adjacent ridges are in parallel, and the width and gap of the unit electrodes 12a, 13a excluding unit electrodes 12'a and 12'a at both the outermost ridges of the electrode 12 are equal with each other and are of normal type electrode shape. Further, the unit electrodes 12'a, 12'a are formed in triangle shape, and both the outermost parts of the electrode 12 have a slope to an orthogonal direction with the direction of signal transmission. Thus, the measured value of each characteristics including the transmission band width can be in coincidence with the design calculation value, allowing to make the design easy.
JP6238480A 1980-05-10 1980-05-10 Elastic surface wave device Granted JPS56158519A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6238480A JPS56158519A (en) 1980-05-10 1980-05-10 Elastic surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6238480A JPS56158519A (en) 1980-05-10 1980-05-10 Elastic surface wave device

Publications (2)

Publication Number Publication Date
JPS56158519A true JPS56158519A (en) 1981-12-07
JPH0214811B2 JPH0214811B2 (en) 1990-04-10

Family

ID=13198569

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6238480A Granted JPS56158519A (en) 1980-05-10 1980-05-10 Elastic surface wave device

Country Status (1)

Country Link
JP (1) JPS56158519A (en)

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
JPH036114A (en) * 1989-06-01 1991-01-11 Mitsubishi Electric Corp Surface acoustic wave device

Cited By (3)

* 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
JPH036114A (en) * 1989-06-01 1991-01-11 Mitsubishi Electric Corp Surface acoustic wave device

Also Published As

Publication number Publication date
JPH0214811B2 (en) 1990-04-10

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