JPS5757020A - Surface acoustic wave filter - Google Patents

Surface acoustic wave filter

Info

Publication number
JPS5757020A
JPS5757020A JP13258680A JP13258680A JPS5757020A JP S5757020 A JPS5757020 A JP S5757020A JP 13258680 A JP13258680 A JP 13258680A JP 13258680 A JP13258680 A JP 13258680A JP S5757020 A JPS5757020 A JP S5757020A
Authority
JP
Japan
Prior art keywords
pattern
metallic
pads
acoustic wave
surface acoustic
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
JP13258680A
Other languages
Japanese (ja)
Inventor
Sumio Yamada
Noboru Wakatsuki
Yoshiaki Fujiwara
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP13258680A priority Critical patent/JPS5757020A/en
Publication of JPS5757020A publication Critical patent/JPS5757020A/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
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02874—Means for compensation or elimination of undesirable effects of direct coupling between input and output transducers
    • 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
    • H03H9/05—Holders; Supports
    • H03H9/058—Holders; Supports for surface acoustic wave devices

Landscapes

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

Abstract

PURPOSE:To lower the crosstalk level and to improve reliability and the yield of manufacturing, by partitioning off an input conductor pad and an output conductor pad from each other with a metallic pattern and connecting the pattern to the stem plate on the reverse of a substrate with a conductor. CONSTITUTION:An input transducer 9, an output transducer 10, a multistrip coupler 11, pads 12 and 13, and a metallic pattern 21 which partitions off pads 12 and 13 from the each other are formed independently on a substrate 8. Pads 12 and 13 and terminals 3-6 are connected by a metallic narrow wire 14, and the pattern 21 and the stem 2 are connected by a metallic narrow wire 22. Thus, the crosstalk level of a filter 23 becomes about -52dB.
JP13258680A 1980-09-24 1980-09-24 Surface acoustic wave filter Pending JPS5757020A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13258680A JPS5757020A (en) 1980-09-24 1980-09-24 Surface acoustic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13258680A JPS5757020A (en) 1980-09-24 1980-09-24 Surface acoustic wave filter

Publications (1)

Publication Number Publication Date
JPS5757020A true JPS5757020A (en) 1982-04-06

Family

ID=15084795

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13258680A Pending JPS5757020A (en) 1980-09-24 1980-09-24 Surface acoustic wave filter

Country Status (1)

Country Link
JP (1) JPS5757020A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795934A (en) * 1984-02-20 1989-01-03 British Telecommunication, Plc Mounting of saw devices

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795934A (en) * 1984-02-20 1989-01-03 British Telecommunication, Plc Mounting of saw devices
US5035035A (en) * 1984-02-20 1991-07-30 British Telecommunications Plc Method of mounting saw devices

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