JPS5635523A - Surface elastic wave element - Google Patents

Surface elastic wave element

Info

Publication number
JPS5635523A
JPS5635523A JP11034879A JP11034879A JPS5635523A JP S5635523 A JPS5635523 A JP S5635523A JP 11034879 A JP11034879 A JP 11034879A JP 11034879 A JP11034879 A JP 11034879A JP S5635523 A JPS5635523 A JP S5635523A
Authority
JP
Japan
Prior art keywords
comb
electrodes
along
elastic wave
wave element
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
JP11034879A
Other languages
Japanese (ja)
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 JP11034879A priority Critical patent/JPS5635523A/en
Publication of JPS5635523A publication Critical patent/JPS5635523A/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
    • H03H9/14517—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 avoid the fault caused by the disconnection at the noncross part of the comb-tooth part, by providing the auxiliary electrodes to connect to the comb-tooth part and almost along the fixed envelope curve. CONSTITUTION:A crossing is secured for part of the comb-tooth part where the effective electrode 22 and the dummy electrode 23 are formed alternately and along the fixed envelope curves 24 and 25 on one main surface of the piezoelectric substrate 21 made of the LiTaO3, LiNbO3, ceramics or the like. In this case, the auxiliary electrodes 26 and 27 to connect to the electrodes 22 and 23 are provided almost along the curves 24 and 25. Accordingly, the surface elastic wave element does not become defective regardless of occurrence of the disconnection areas 28 and 29 since a connection is secured at the cross part by the electrodes 26 and 27.
JP11034879A 1979-08-31 1979-08-31 Surface elastic wave element Pending JPS5635523A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11034879A JPS5635523A (en) 1979-08-31 1979-08-31 Surface elastic wave element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11034879A JPS5635523A (en) 1979-08-31 1979-08-31 Surface elastic wave element

Publications (1)

Publication Number Publication Date
JPS5635523A true JPS5635523A (en) 1981-04-08

Family

ID=14533472

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11034879A Pending JPS5635523A (en) 1979-08-31 1979-08-31 Surface elastic wave element

Country Status (1)

Country Link
JP (1) JPS5635523A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014502809A (en) * 2010-12-22 2014-02-03 エプコス アクチエンゲゼルシャフト Electroacoustic resonator

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030050A (en) * 1974-09-26 1977-06-14 Plessey Handel Und Investments A.G. Acoustic surface wave filters

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4030050A (en) * 1974-09-26 1977-06-14 Plessey Handel Und Investments A.G. Acoustic surface wave filters

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014502809A (en) * 2010-12-22 2014-02-03 エプコス アクチエンゲゼルシャフト Electroacoustic resonator

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