JPS5715518A - Elastic surface wave device - Google Patents

Elastic surface wave device

Info

Publication number
JPS5715518A
JPS5715518A JP9026880A JP9026880A JPS5715518A JP S5715518 A JPS5715518 A JP S5715518A JP 9026880 A JP9026880 A JP 9026880A JP 9026880 A JP9026880 A JP 9026880A JP S5715518 A JPS5715518 A JP S5715518A
Authority
JP
Japan
Prior art keywords
converter
electrodes
piezoelectric
unidirectional
surface 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.)
Pending
Application number
JP9026880A
Other languages
Japanese (ja)
Inventor
Kentaro Setsune
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.)
Panasonic Holdings Corp
Original Assignee
Matsushita Electric Industrial 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 Matsushita Electric Industrial Co Ltd filed Critical Matsushita Electric Industrial Co Ltd
Priority to JP9026880A priority Critical patent/JPS5715518A/en
Publication of JPS5715518A publication Critical patent/JPS5715518A/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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/0274—Intra-transducers grating lines
    • H03H9/02755—Meandering floating or grounded grating lines
    • 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
    • H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
    • H03H9/14508—Polyphase SAW transducers

Landscapes

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

Abstract

PURPOSE:To reduce the insertion loss and to make manufacture easy, by locating a plurality of unit unidirectional electrodes to the direction of elastic surface wave transmission through interleaving a converter and connecting them with each other to form the unidirectional piezoelectric converter. CONSTITUTION:Electrodes can be interleaved since sufficient piezoelectric conversion efficient is obtained, if pairs of electrodes are conformed to the electromechanical coupling coefficient of a substrate 5. Thus, a unit unidirectional piezoelectric converter is interleaved evey other block. Different unit unidirectional piezoelectric converters are located with interval of a multiple of (a positive integer +1/2) of the wavelength to prevent the same converter from being located periodically, allowing to suppress the spurious suppression amount outside of the main response band.
JP9026880A 1980-07-01 1980-07-01 Elastic surface wave device Pending JPS5715518A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9026880A JPS5715518A (en) 1980-07-01 1980-07-01 Elastic surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9026880A JPS5715518A (en) 1980-07-01 1980-07-01 Elastic surface wave device

Publications (1)

Publication Number Publication Date
JPS5715518A true JPS5715518A (en) 1982-01-26

Family

ID=13993752

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9026880A Pending JPS5715518A (en) 1980-07-01 1980-07-01 Elastic surface wave device

Country Status (1)

Country Link
JP (1) JPS5715518A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243249A (en) * 1990-04-11 1993-09-07 Fujitsu Limited Saw device having a plurality of electrodes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5243249A (en) * 1990-04-11 1993-09-07 Fujitsu Limited Saw device having a plurality of electrodes
US5325573A (en) * 1990-04-11 1994-07-05 Fujitsu Limited Method of fabricating a saw device

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