JPS553280A - Composite elastic surface wave filter - Google Patents

Composite elastic surface wave filter

Info

Publication number
JPS553280A
JPS553280A JP7605978A JP7605978A JPS553280A JP S553280 A JPS553280 A JP S553280A JP 7605978 A JP7605978 A JP 7605978A JP 7605978 A JP7605978 A JP 7605978A JP S553280 A JPS553280 A JP S553280A
Authority
JP
Japan
Prior art keywords
surface wave
elastic surface
filters
wave filter
filter
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
JP7605978A
Other languages
Japanese (ja)
Inventor
Yukichi Aihara
Junichi Inohara
Yukihiro Kino
Kenroku Tani
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 JP7605978A priority Critical patent/JPS553280A/en
Publication of JPS553280A publication Critical patent/JPS553280A/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 elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/0296—Surface acoustic wave [SAW] devices having both acoustic and non-acoustic properties

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)

Abstract

PURPOSE:To ensure an extreme increment of the guaranteed attenuation quantity without increasing the outer measurement of the filter but by forming the elastic surface wave filter and other filters on the same substrate and then giving the serial connection between them. CONSTITUTION:The elastic surface wave filter consisting of comb-line electrode 1 and 2 plus other filters 6 and 7 are provided at the end part of piezoelectric substrate 5 which does not affect the propagation of the elastic surface wave. Then filters 6 and 7 are connected in series to filters 1 and 2. As a result, the guaranteed attenuation quantity can be increased extremely without increasing the outer measurement of the filter.
JP7605978A 1978-06-22 1978-06-22 Composite elastic surface wave filter Pending JPS553280A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7605978A JPS553280A (en) 1978-06-22 1978-06-22 Composite elastic surface wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7605978A JPS553280A (en) 1978-06-22 1978-06-22 Composite elastic surface wave filter

Publications (1)

Publication Number Publication Date
JPS553280A true JPS553280A (en) 1980-01-11

Family

ID=13594191

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7605978A Pending JPS553280A (en) 1978-06-22 1978-06-22 Composite elastic surface wave filter

Country Status (1)

Country Link
JP (1) JPS553280A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5764927U (en) * 1980-10-07 1982-04-17
JPS581317A (en) * 1981-06-25 1983-01-06 Maruyasu Kogyo Kk Surface acoustic wave filter device
US4625184A (en) * 1982-07-02 1986-11-25 Clarion Co., Ltd. Surface acoustic wave device with impedance matching network formed thereon
JPH02213209A (en) * 1989-02-13 1990-08-24 Nec Corp Vibration element

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5031756A (en) * 1973-07-23 1975-03-28
JPS5227240A (en) * 1975-08-25 1977-03-01 Toshiba Corp Surface wave filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5031756A (en) * 1973-07-23 1975-03-28
JPS5227240A (en) * 1975-08-25 1977-03-01 Toshiba Corp Surface wave filter

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5764927U (en) * 1980-10-07 1982-04-17
JPS581317A (en) * 1981-06-25 1983-01-06 Maruyasu Kogyo Kk Surface acoustic wave filter device
US4625184A (en) * 1982-07-02 1986-11-25 Clarion Co., Ltd. Surface acoustic wave device with impedance matching network formed thereon
JPH02213209A (en) * 1989-02-13 1990-08-24 Nec Corp Vibration element

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