JPS5694814A - Elastic surface wave device - Google Patents

Elastic surface wave device

Info

Publication number
JPS5694814A
JPS5694814A JP17116179A JP17116179A JPS5694814A JP S5694814 A JPS5694814 A JP S5694814A JP 17116179 A JP17116179 A JP 17116179A JP 17116179 A JP17116179 A JP 17116179A JP S5694814 A JPS5694814 A JP S5694814A
Authority
JP
Japan
Prior art keywords
input
output
converter
electrode
close
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
JP17116179A
Other languages
Japanese (ja)
Inventor
Kentaro Setsune
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 JP17116179A priority Critical patent/JPS5694814A/en
Publication of JPS5694814A publication Critical patent/JPS5694814A/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
    • H03H9/05—Holders; Supports
    • H03H9/10—Mounting in enclosures
    • H03H9/1064—Mounting in enclosures for surface acoustic wave [SAW] devices
    • H03H9/1071—Mounting in enclosures for surface acoustic wave [SAW] devices the enclosure being defined by a frame built on a substrate and a cap, the frame having no mechanical contact with the SAW device
    • 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

Landscapes

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

Abstract

PURPOSE:To reduce the direct connection between the input and the output, by setting the floating capacity of the earth electrode near the input/output part larger than the floating capacity between the input and the output. CONSTITUTION:The electric conduction parts 13 and 14 are formed inside of the dielectric container 12 which gives an airtight state to the elastic surface wave element formed on a printed circuit board. The part 13 is formed at the input terminal side and connected to the electrode 15 close to the input side among the earth electrodes divided on the printed circuit board. The part 14 is formed at the output side and connected to the electrode 16. In such constitution, the part 13 is close to the converter 4 to increase the floating capacity there. The part 14 is put close to the other converter. As a result, the induced voltage is reduced between the earth electrode and the converter, thus reducing the connection between the input and the output.
JP17116179A 1979-12-28 1979-12-28 Elastic surface wave device Pending JPS5694814A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17116179A JPS5694814A (en) 1979-12-28 1979-12-28 Elastic surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17116179A JPS5694814A (en) 1979-12-28 1979-12-28 Elastic surface wave device

Publications (1)

Publication Number Publication Date
JPS5694814A true JPS5694814A (en) 1981-07-31

Family

ID=15918114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17116179A Pending JPS5694814A (en) 1979-12-28 1979-12-28 Elastic surface wave device

Country Status (1)

Country Link
JP (1) JPS5694814A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4699682A (en) * 1985-10-23 1987-10-13 Clarion Co., Ltd. Surface acoustic wave device sealing method
JPS633623U (en) * 1986-06-23 1988-01-11
JPS6347620U (en) * 1986-09-10 1988-03-31
US6271739B1 (en) * 1996-05-28 2001-08-07 Fujitsu Limited Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4699682A (en) * 1985-10-23 1987-10-13 Clarion Co., Ltd. Surface acoustic wave device sealing method
JPS633623U (en) * 1986-06-23 1988-01-11
JPS6347620U (en) * 1986-09-10 1988-03-31
US6271739B1 (en) * 1996-05-28 2001-08-07 Fujitsu Limited Surface-acoustic-wave device having an improved pass-band characteristic and an improved degree of freedom for setting input and output impedances

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