JPS5438743A - Elastic surface wave chirp filter - Google Patents

Elastic surface wave chirp filter

Info

Publication number
JPS5438743A
JPS5438743A JP10561177A JP10561177A JPS5438743A JP S5438743 A JPS5438743 A JP S5438743A JP 10561177 A JP10561177 A JP 10561177A JP 10561177 A JP10561177 A JP 10561177A JP S5438743 A JPS5438743 A JP S5438743A
Authority
JP
Japan
Prior art keywords
surface wave
elastic surface
chirp filter
wave chirp
filter
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
JP10561177A
Other languages
Japanese (ja)
Inventor
Koji Takaragawa
Yoshinori Yamauchi
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.)
Nippon Telegraph and Telephone Corp
Original Assignee
Nippon Telegraph and Telephone Corp
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 Nippon Telegraph and Telephone Corp filed Critical Nippon Telegraph and Telephone Corp
Priority to JP10561177A priority Critical patent/JPS5438743A/en
Publication of JPS5438743A publication Critical patent/JPS5438743A/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
    • H03H9/14555—Chirped 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
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • 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
    • H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger 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
    • H03H9/125—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
    • H03H9/14594—Plan-rotated or plan-tilted 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
    • H03H9/125—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
    • H03H9/14552—Transducers of particular shape or position comprising split fingers

Landscapes

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

Abstract

PURPOSE:To prevent the deterioration of the characteristics of the elastic surface wave caused by the unnecessary reflection wave and also to obtain a miniature elastic surface wave chirp filter.
JP10561177A 1977-09-01 1977-09-01 Elastic surface wave chirp filter Pending JPS5438743A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10561177A JPS5438743A (en) 1977-09-01 1977-09-01 Elastic surface wave chirp filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10561177A JPS5438743A (en) 1977-09-01 1977-09-01 Elastic surface wave chirp filter

Publications (1)

Publication Number Publication Date
JPS5438743A true JPS5438743A (en) 1979-03-23

Family

ID=14412289

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10561177A Pending JPS5438743A (en) 1977-09-01 1977-09-01 Elastic surface wave chirp filter

Country Status (1)

Country Link
JP (1) JPS5438743A (en)

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126407A (en) * 1974-03-22 1975-10-04
JPS5149652A (en) * 1974-10-28 1976-04-30 Mitsumi Electric Co Ltd Hyomenhasochi

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS50126407A (en) * 1974-03-22 1975-10-04
JPS5149652A (en) * 1974-10-28 1976-04-30 Mitsumi Electric Co Ltd Hyomenhasochi

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