JPS52137953A - Elastic surface wave filter - Google Patents

Elastic surface wave filter

Info

Publication number
JPS52137953A
JPS52137953A JP5513476A JP5513476A JPS52137953A JP S52137953 A JPS52137953 A JP S52137953A JP 5513476 A JP5513476 A JP 5513476A JP 5513476 A JP5513476 A JP 5513476A JP S52137953 A JPS52137953 A JP S52137953A
Authority
JP
Japan
Prior art keywords
surface wave
wave filter
elastic surface
filter
oppressive
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
JP5513476A
Other languages
Japanese (ja)
Inventor
Koji Sato
Riichi Kodama
Sadao Takahashi
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP5513476A priority Critical patent/JPS52137953A/en
Publication of JPS52137953A publication Critical patent/JPS52137953A/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
    • H03H9/02881—Means for compensation or elimination of undesirable effects of diffraction of wave beam
    • 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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02779—Continuous surface reflective arrays
    • 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02614—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves
    • H03H9/02629—Treatment of substrates, e.g. curved, spherical, cylindrical substrates ensuring closed round-about circuits for the acoustical waves of the edges
    • 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
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation

Landscapes

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

Abstract

PURPOSE:To obtain the filter which oppresses the refraction of the surface wave at minimum, by forming in the shield electrode the spacing to the extent that the oppressive function of the direct electromagnetic coupling between the input and the output transducers is not damaged.
JP5513476A 1976-05-14 1976-05-14 Elastic surface wave filter Pending JPS52137953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5513476A JPS52137953A (en) 1976-05-14 1976-05-14 Elastic surface wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5513476A JPS52137953A (en) 1976-05-14 1976-05-14 Elastic surface wave filter

Publications (1)

Publication Number Publication Date
JPS52137953A true JPS52137953A (en) 1977-11-17

Family

ID=12990299

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5513476A Pending JPS52137953A (en) 1976-05-14 1976-05-14 Elastic surface wave filter

Country Status (1)

Country Link
JP (1) JPS52137953A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5843610A (en) * 1981-09-09 1983-03-14 Toshiba Corp Surface acoustic wave device

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5843610A (en) * 1981-09-09 1983-03-14 Toshiba Corp Surface acoustic wave device

Similar Documents

Publication Publication Date Title
JPS54844A (en) Elastic surface wave filter
GB1529943A (en) Electrical filters including coupled resonators
JPS55610A (en) Frequency selection device
JPS5219044A (en) Surface acoustic wave filter
JPS52137953A (en) Elastic surface wave filter
JPS5310946A (en) Elastic surface wave filter
JPS5323246A (en) Noise stopper for power supply
JPS53132246A (en) Elastic surface wave filter
JPS55114003A (en) Higher harmonic filter
JPS51120153A (en) Elastic surface wave filter
JPS5438741A (en) Elastic surface wave element
JPS5272136A (en) Elastic surface wave filter
JPS5368054A (en) Elastic surface wave filter
JPS5362964A (en) Elastic surface wave apparatus
JPS51131242A (en) Elastic surface wave filter
JPS5317244A (en) Surface wave filter and its production
JPS5216146A (en) Elastic surface wave device
JPS5463651A (en) Elastic surface wave device
JPS55115712A (en) Elastic surface wave filter
JPS53114644A (en) Elastic surface wave filter
JPS5412546A (en) Sound surfave wave unit
JPS5234608A (en) Multifrequency signal receiving system
JPS5210652A (en) Elastic surface wave device
JPS5430761A (en) Filter circuit using elastic surface-wave filter
JPS5349985A (en) Crystal oscillator