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JPS5526733A - Elastic surface wave filter - Google Patents

Elastic surface wave filter

Info

Publication number
JPS5526733A
JPS5526733A JP9941578A JP9941578A JPS5526733A JP S5526733 A JPS5526733 A JP S5526733A JP 9941578 A JP9941578 A JP 9941578A JP 9941578 A JP9941578 A JP 9941578A JP S5526733 A JPS5526733 A JP S5526733A
Authority
JP
Japan
Prior art keywords
surface wave
circuit
elastic surface
input
band
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
JP9941578A
Other languages
Japanese (ja)
Other versions
JPS5852371B2 (en
Inventor
Yoshinori Yamauchi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP9941578A priority Critical patent/JPS5852371B2/en
Publication of JPS5526733A publication Critical patent/JPS5526733A/en
Publication of JPS5852371B2 publication Critical patent/JPS5852371B2/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 elements; 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 elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6489—Compensation of undesirable effects
    • H03H9/6496—Reducing ripple in transfer characteristic

Landscapes

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

Abstract

PURPOSE:To make it possible to obtain band-pass characteristics accompanied with few Fresnel ripples in a passing band by providing matching circuits to an input side and output side. CONSTITUTION:For example, an elastic surface wave filter is provided with matching circuits M1 and M2 at the input and output sides of elastic surface wave circuit U; from the input side of circuit M1, input terminals K1 and K2 are led out and from the input side of circuit M2, output terminals H1 and H2 are also led out. As a result, impedance values from input terminals K1 and K2, and output terminals H1 and H2 to circuit U are well matched in a passing band and band-pass characteristics are not accompanied substantially with Fresnel ripples in the passing band (fL-fH).
JP9941578A 1978-08-15 1978-08-15 surface acoustic wave filter Expired JPS5852371B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9941578A JPS5852371B2 (en) 1978-08-15 1978-08-15 surface acoustic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9941578A JPS5852371B2 (en) 1978-08-15 1978-08-15 surface acoustic wave filter

Publications (2)

Publication Number Publication Date
JPS5526733A true JPS5526733A (en) 1980-02-26
JPS5852371B2 JPS5852371B2 (en) 1983-11-22

Family

ID=14246836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9941578A Expired JPS5852371B2 (en) 1978-08-15 1978-08-15 surface acoustic wave filter

Country Status (1)

Country Link
JP (1) JPS5852371B2 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6081911A (en) * 1983-10-12 1985-05-10 Mitsubishi Electric Corp Filter bank

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6081911A (en) * 1983-10-12 1985-05-10 Mitsubishi Electric Corp Filter bank
JPH0351329B2 (en) * 1983-10-12 1991-08-06 Mitsubishi Electric Corp

Also Published As

Publication number Publication date
JPS5852371B2 (en) 1983-11-22

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