JPS5539454A - Elastic surface wave filter - Google Patents

Elastic surface wave filter

Info

Publication number
JPS5539454A
JPS5539454A JP11311978A JP11311978A JPS5539454A JP S5539454 A JPS5539454 A JP S5539454A JP 11311978 A JP11311978 A JP 11311978A JP 11311978 A JP11311978 A JP 11311978A JP S5539454 A JPS5539454 A JP S5539454A
Authority
JP
Japan
Prior art keywords
electrode
converter
cross
elastic surface
surface wave
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
JP11311978A
Other languages
Japanese (ja)
Other versions
JPS594886B2 (en
Inventor
Joji Shimakawa
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.)
Matsushima Kogyo KK
Original Assignee
Matsushima Kogyo KK
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 Matsushima Kogyo KK filed Critical Matsushima Kogyo KK
Priority to JP11311978A priority Critical patent/JPS594886B2/en
Publication of JPS5539454A publication Critical patent/JPS5539454A/en
Publication of JPS594886B2 publication Critical patent/JPS594886B2/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
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6403—Programmable filters
    • 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
    • H03H9/02968—Surface acoustic wave [SAW] devices having both acoustic and non-acoustic properties with optical devices

Landscapes

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

Abstract

PURPOSE:To obtain a small-capacity and programable filter by securing the propagation parallel to the direction of the cross-finger electrode and then linking the electrode of the wave receiving converter to each cross-finger electrode via the switch region. CONSTITUTION:Reflective grid 3 is formed by arraying in the propagating direction the several units of reflectors which are distributed with the 45 deg. angle to the propagating direction of the elastic surface wave generated from wave transmitting converter 2 and with the pitch space changing continuously. Then wave receiving converter 4 in which the pitch of cross-finger electrode 9 varies continuously is installed to secure the angle of 45 deg. to the arrangement direction of grid 3 and furthermore with the direction of electrode 9 set parallel to the propagating direction. Then electrode 8 of one side of converter 4 is linked to its each electrode 9 via switch region 7. In such way, a samll-capacity and programable filter can be obtained.
JP11311978A 1978-09-14 1978-09-14 surface acoustic wave filter Expired JPS594886B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11311978A JPS594886B2 (en) 1978-09-14 1978-09-14 surface acoustic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11311978A JPS594886B2 (en) 1978-09-14 1978-09-14 surface acoustic wave filter

Publications (2)

Publication Number Publication Date
JPS5539454A true JPS5539454A (en) 1980-03-19
JPS594886B2 JPS594886B2 (en) 1984-02-01

Family

ID=14603988

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11311978A Expired JPS594886B2 (en) 1978-09-14 1978-09-14 surface acoustic wave filter

Country Status (1)

Country Link
JP (1) JPS594886B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156212A (en) * 1982-03-12 1983-09-17 Omron Tateisi Electronics Co Generator of surface acoustic wave
JPS62179209A (en) * 1986-02-03 1987-08-06 General Res Obu Erekutoronitsukusu:Kk Surface acoustic wave element and its programming system
US7439826B2 (en) * 2005-02-04 2008-10-21 Samsung Electronics Co., Ltd. Programmable surface acoustic wave filter

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58156212A (en) * 1982-03-12 1983-09-17 Omron Tateisi Electronics Co Generator of surface acoustic wave
JPS62179209A (en) * 1986-02-03 1987-08-06 General Res Obu Erekutoronitsukusu:Kk Surface acoustic wave element and its programming system
US7439826B2 (en) * 2005-02-04 2008-10-21 Samsung Electronics Co., Ltd. Programmable surface acoustic wave filter

Also Published As

Publication number Publication date
JPS594886B2 (en) 1984-02-01

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