JPS5558614A - Elastic surface wave device - Google Patents

Elastic surface wave device

Info

Publication number
JPS5558614A
JPS5558614A JP13216378A JP13216378A JPS5558614A JP S5558614 A JPS5558614 A JP S5558614A JP 13216378 A JP13216378 A JP 13216378A JP 13216378 A JP13216378 A JP 13216378A JP S5558614 A JPS5558614 A JP S5558614A
Authority
JP
Japan
Prior art keywords
electrode fingers
electrode
phase
common line
wave device
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
JP13216378A
Other languages
Japanese (ja)
Inventor
Katsuhide Tsukamoto
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 JP13216378A priority Critical patent/JPS5558614A/en
Publication of JPS5558614A publication Critical patent/JPS5558614A/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 improve a spurious characteristic by removing the same number of electrode fingers from electrode fingears, which are excited by a specific phase, and electrode fingers, which are excited by a phase different from the phase above by pi/2, in a group-type one-direction converter. CONSTITUTION:Electric signals from power source 37 are applied to common line 36 through matching circuit 37 and are applied to common line 35 through pi/2 phase shifter 39. Common line 34 is grounded. Then, one electrode finger in the broken line is removed from ''pi/2'' electrode fingers 41 and ''0'' electrode fingers 42 respectively. As a result, side lobe can be reduced.
JP13216378A 1978-10-26 1978-10-26 Elastic surface wave device Pending JPS5558614A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13216378A JPS5558614A (en) 1978-10-26 1978-10-26 Elastic surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13216378A JPS5558614A (en) 1978-10-26 1978-10-26 Elastic surface wave device

Publications (1)

Publication Number Publication Date
JPS5558614A true JPS5558614A (en) 1980-05-01

Family

ID=15074830

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13216378A Pending JPS5558614A (en) 1978-10-26 1978-10-26 Elastic surface wave device

Country Status (1)

Country Link
JP (1) JPS5558614A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838383A1 (en) * 1987-11-13 1989-06-01 Hitachi Ltd DEVICE FOR ACOUSTIC SURFACE WAVES WITH OVERLAP-WEIGHTED CONVERTER PROVIDED WITH A GROUP OF ELECTRODES WITH IRREGULAR SPACING

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3838383A1 (en) * 1987-11-13 1989-06-01 Hitachi Ltd DEVICE FOR ACOUSTIC SURFACE WAVES WITH OVERLAP-WEIGHTED CONVERTER PROVIDED WITH A GROUP OF ELECTRODES WITH IRREGULAR SPACING

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