JPS56122215A - Reed screen type electrode - Google Patents

Reed screen type electrode

Info

Publication number
JPS56122215A
JPS56122215A JP2541480A JP2541480A JPS56122215A JP S56122215 A JPS56122215 A JP S56122215A JP 2541480 A JP2541480 A JP 2541480A JP 2541480 A JP2541480 A JP 2541480A JP S56122215 A JPS56122215 A JP S56122215A
Authority
JP
Japan
Prior art keywords
electrode fingers
lambda
screen type
elastic wave
type electrode
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
JP2541480A
Other languages
Japanese (ja)
Inventor
Yuji Higuchi
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon Electric 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP2541480A priority Critical patent/JPS56122215A/en
Publication of JPS56122215A publication Critical patent/JPS56122215A/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
    • H03H9/14544—Transducers of particular shape or position
    • 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

Landscapes

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

Abstract

PURPOSE:To avoid the undesired surface wave response, by forming the end part of the surface elastic wave propagation side with a plural number of electrode fingers having different lengths. CONSTITUTION:The electrode fingers 5-8 having different lengths are disposed at the end of the side robe of the reed screen type electrode and obliquely as a whole to the direction of the surface elastic wave propagation. A difference of lambda is secured at the slope part of the electrode fingers 5-8 each and in the propagating direction of the surface elastic wave. In the example in the figure, the repetitive synchronism is set at lambda/4 for the electrode fingers. Thus the undesired surface wave response caused by the hatched area of electrode fingers 5 and 7 has a path difference of lambda/2 to secure an offset in the adverse phase to each other. In the same way, the undesired surface wave response caused by the hatched areas of the electrode fingers 6 and 8 is offset.
JP2541480A 1980-02-29 1980-02-29 Reed screen type electrode Pending JPS56122215A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2541480A JPS56122215A (en) 1980-02-29 1980-02-29 Reed screen type electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2541480A JPS56122215A (en) 1980-02-29 1980-02-29 Reed screen type electrode

Publications (1)

Publication Number Publication Date
JPS56122215A true JPS56122215A (en) 1981-09-25

Family

ID=12165270

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2541480A Pending JPS56122215A (en) 1980-02-29 1980-02-29 Reed screen type electrode

Country Status (1)

Country Link
JP (1) JPS56122215A (en)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725714A (en) * 1980-07-23 1982-02-10 Oki Electric Ind Co Ltd Elastic surface wave converter
JPS6110309A (en) * 1984-06-26 1986-01-17 Toshiba Corp Surface acoustic wave device
US4604623A (en) * 1983-06-30 1986-08-05 X-Cyte Inc. Surface acoustic wave passive transponder having non-reflective transducers and pads
JPS61227418A (en) * 1985-03-29 1986-10-09 ノーザン・テレコム・リミテツド Saw apparatus
EP0279678A2 (en) * 1987-02-19 1988-08-24 Hazeltine Corporation Surface wave delay line with antireflective electrodes
US4814658A (en) * 1986-11-10 1989-03-21 Northern Telecom Limited SAW device with continuous finger pattern
US6531957B1 (en) 1996-11-29 2003-03-11 X-Cyte, Inc. Dual mode transmitter-receiver and decoder for RF transponder tags

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5310946A (en) * 1976-07-17 1978-01-31 Matsushita Electric Ind Co Ltd Elastic surface wave filter

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5310946A (en) * 1976-07-17 1978-01-31 Matsushita Electric Ind Co Ltd Elastic surface wave filter

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5725714A (en) * 1980-07-23 1982-02-10 Oki Electric Ind Co Ltd Elastic surface wave converter
US4604623A (en) * 1983-06-30 1986-08-05 X-Cyte Inc. Surface acoustic wave passive transponder having non-reflective transducers and pads
JPS6110309A (en) * 1984-06-26 1986-01-17 Toshiba Corp Surface acoustic wave device
JPS61227418A (en) * 1985-03-29 1986-10-09 ノーザン・テレコム・リミテツド Saw apparatus
US4814658A (en) * 1986-11-10 1989-03-21 Northern Telecom Limited SAW device with continuous finger pattern
EP0279678A2 (en) * 1987-02-19 1988-08-24 Hazeltine Corporation Surface wave delay line with antireflective electrodes
JPS63215108A (en) * 1987-02-19 1988-09-07 ヘーゼルタイン　コーポレーション Surface elastic wave device
US6531957B1 (en) 1996-11-29 2003-03-11 X-Cyte, Inc. Dual mode transmitter-receiver and decoder for RF transponder tags

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