JPS55105428A - Matching method for elastic surface wave element - Google Patents

Matching method for elastic surface wave element

Info

Publication number
JPS55105428A
JPS55105428A JP1350079A JP1350079A JPS55105428A JP S55105428 A JPS55105428 A JP S55105428A JP 1350079 A JP1350079 A JP 1350079A JP 1350079 A JP1350079 A JP 1350079A JP S55105428 A JPS55105428 A JP S55105428A
Authority
JP
Japan
Prior art keywords
surface wave
wave element
impedance
circuit
resistance
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
JP1350079A
Other languages
Japanese (ja)
Inventor
Eiji Iegi
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP1350079A priority Critical patent/JPS55105428A/en
Publication of JPS55105428A publication Critical patent/JPS55105428A/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
    • H03H9/14597—Matching SAW transducers to external electrical circuits

Landscapes

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

Abstract

PURPOSE:To enhance the impedance matching between the front- and rear-step circuits by changing the input or output impedance of the surface wave element into the pure resistance and the constant resistance each. CONSTITUTION:When surface wave element 2 is connected to the rear step of circuit 1 of the TV tuner or the like, serial coil 3 is inserted between element 2 and circuit 1. And furthermore resistance 4 is inserted between the input ends of element 2 and also between coil 3 and element 2. Thus the impedance features the capacity of zero over a wide frequency range in case the transducer side is viewed from the position between terminals A and B which are combined to front-step circuit 1. As a result, the impedance can be changed into the pure resistance.
JP1350079A 1979-02-07 1979-02-07 Matching method for elastic surface wave element Pending JPS55105428A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1350079A JPS55105428A (en) 1979-02-07 1979-02-07 Matching method for elastic surface wave element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1350079A JPS55105428A (en) 1979-02-07 1979-02-07 Matching method for elastic surface wave element

Publications (1)

Publication Number Publication Date
JPS55105428A true JPS55105428A (en) 1980-08-13

Family

ID=11834832

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1350079A Pending JPS55105428A (en) 1979-02-07 1979-02-07 Matching method for elastic surface wave element

Country Status (1)

Country Link
JP (1) JPS55105428A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194615A (en) * 1981-05-27 1982-11-30 Clarion Co Ltd Matching circuit for surface acoustic wave
US4476446A (en) * 1981-08-25 1984-10-09 Raytheon Company Impedance matching network for field effect transistor
JPH0229019A (en) * 1988-06-09 1990-01-31 Matsushita Electric Ind Co Ltd Television signal demodulation input filter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57194615A (en) * 1981-05-27 1982-11-30 Clarion Co Ltd Matching circuit for surface acoustic wave
JPH0157845B2 (en) * 1981-05-27 1989-12-07 Clarion Co Ltd
US4476446A (en) * 1981-08-25 1984-10-09 Raytheon Company Impedance matching network for field effect transistor
JPH0229019A (en) * 1988-06-09 1990-01-31 Matsushita Electric Ind Co Ltd Television signal demodulation input filter

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