JPS53136460A - Unit for elastic surface wave - Google Patents

Unit for elastic surface wave

Info

Publication number
JPS53136460A
JPS53136460A JP5070977A JP5070977A JPS53136460A JP S53136460 A JPS53136460 A JP S53136460A JP 5070977 A JP5070977 A JP 5070977A JP 5070977 A JP5070977 A JP 5070977A JP S53136460 A JPS53136460 A JP S53136460A
Authority
JP
Japan
Prior art keywords
unit
surface wave
elastic surface
lambda0
wave
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
JP5070977A
Other languages
Japanese (ja)
Other versions
JPS6145405B2 (en
Inventor
Keizo Nishimura
Yasunori Kanazawa
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP5070977A priority Critical patent/JPS53136460A/en
Publication of JPS53136460A publication Critical patent/JPS53136460A/en
Publication of JPS6145405B2 publication Critical patent/JPS6145405B2/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
    • H03H9/14597—Matching SAW transducers to external electrical circuits
    • 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
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • 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
    • H03H9/14591—Vertically-split transducers

Landscapes

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

Abstract

PURPOSE:To suppress the increase in the insertion loss, by splitting one electrode each of two surface elastic filters in series connection into two sets and placing them by lambda0/4 (where; lambda0 is the wave length for center frequency) toward the direction of propagation of wave surface.
JP5070977A 1977-05-04 1977-05-04 Unit for elastic surface wave Granted JPS53136460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5070977A JPS53136460A (en) 1977-05-04 1977-05-04 Unit for elastic surface wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5070977A JPS53136460A (en) 1977-05-04 1977-05-04 Unit for elastic surface wave

Publications (2)

Publication Number Publication Date
JPS53136460A true JPS53136460A (en) 1978-11-29
JPS6145405B2 JPS6145405B2 (en) 1986-10-08

Family

ID=12866417

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5070977A Granted JPS53136460A (en) 1977-05-04 1977-05-04 Unit for elastic surface wave

Country Status (1)

Country Link
JP (1) JPS53136460A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012199670A (en) * 2011-03-18 2012-10-18 Nippon Dempa Kogyo Co Ltd Elastic wave filter

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS519646A (en) * 1974-07-15 1976-01-26 Nippon Telegraph & Telephone DANSEI HYOMENHASOCHI
JPS524752A (en) * 1975-06-30 1977-01-14 Toshiba Corp Elastic surface wave filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS519646A (en) * 1974-07-15 1976-01-26 Nippon Telegraph & Telephone DANSEI HYOMENHASOCHI
JPS524752A (en) * 1975-06-30 1977-01-14 Toshiba Corp Elastic surface wave filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2012199670A (en) * 2011-03-18 2012-10-18 Nippon Dempa Kogyo Co Ltd Elastic wave filter

Also Published As

Publication number Publication date
JPS6145405B2 (en) 1986-10-08

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