JPS5634217A - Elastic surface wave filter - Google Patents

Elastic surface wave filter

Info

Publication number
JPS5634217A
JPS5634217A JP10969079A JP10969079A JPS5634217A JP S5634217 A JPS5634217 A JP S5634217A JP 10969079 A JP10969079 A JP 10969079A JP 10969079 A JP10969079 A JP 10969079A JP S5634217 A JPS5634217 A JP S5634217A
Authority
JP
Japan
Prior art keywords
electrodes
lambda
width
nonintersection
disconnection
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
JP10969079A
Other languages
Japanese (ja)
Other versions
JPS5952569B2 (en
Inventor
Yoshihiko Yasuhara
Teruo Kurokawa
Nobuki Yamaji
Kiyobumi Yamashita
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 JP10969079A priority Critical patent/JPS5952569B2/en
Publication of JPS5634217A publication Critical patent/JPS5634217A/en
Publication of JPS5952569B2 publication Critical patent/JPS5952569B2/en
Expired 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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves

Abstract

PURPOSE:To improve the characteristic and the yield dependent upon disconnection for production, by enlarging the width of electrodes except an intersection part to prevent disconnection and by eliminating acoustic reflection to suppress generation of the second higher harmonic. CONSTITUTION:Electrodes 21 of intersection part (a) are formed into width lambda/8 and interval 22 of electrodes is set to lambda/8 also when the wave length of the surface wave is denoted as lambda. Meanwhile, electrodes of nonintersection parts are so connected that two electrodes connected to intersecting double electrodes may be widened and be further extended on the side to form electrodes of width 5lambda/8. When electrodes are formed successively in this manner, the interval of electrodes of width 5lambda/8 of nonintersection parts becomes wider than lambda/8, and therefore, dummy electrodes 24 of width lambda/8 are provided between respective widened nonintersection part electrodes. As a result, disconnection and acoustic reflection can be prevented to suppress generation of the second higher harmonic, so that the characteristic and the yield for production can be improved.
JP10969079A 1979-08-30 1979-08-30 surface acoustic wave filter Expired JPS5952569B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10969079A JPS5952569B2 (en) 1979-08-30 1979-08-30 surface acoustic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10969079A JPS5952569B2 (en) 1979-08-30 1979-08-30 surface acoustic wave filter

Publications (2)

Publication Number Publication Date
JPS5634217A true JPS5634217A (en) 1981-04-06
JPS5952569B2 JPS5952569B2 (en) 1984-12-20

Family

ID=14516717

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10969079A Expired JPS5952569B2 (en) 1979-08-30 1979-08-30 surface acoustic wave filter

Country Status (1)

Country Link
JP (1) JPS5952569B2 (en)

Also Published As

Publication number Publication date
JPS5952569B2 (en) 1984-12-20

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