JPS5678219A - Elastic surface wave device - Google Patents

Elastic surface wave device

Info

Publication number
JPS5678219A
JPS5678219A JP15438579A JP15438579A JPS5678219A JP S5678219 A JPS5678219 A JP S5678219A JP 15438579 A JP15438579 A JP 15438579A JP 15438579 A JP15438579 A JP 15438579A JP S5678219 A JPS5678219 A JP S5678219A
Authority
JP
Japan
Prior art keywords
variance
surface wave
wave device
elastic surface
film thickness
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
JP15438579A
Other languages
Japanese (ja)
Inventor
Jun Yamada
Takeshi Hazama
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP15438579A priority Critical patent/JPS5678219A/en
Publication of JPS5678219A publication Critical patent/JPS5678219A/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
    • H03H9/02637—Details concerning reflective or coupling 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
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02803—Weighted reflective structures
    • H03H9/02811—Chirped reflective or coupling arrays

Landscapes

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

Abstract

PURPOSE:To obtain constant frequency characteristics regardless of variance in film thickness with regard to a elastic surface wave device having a resonantor composed of metallic strips, by decreasing electrode intervals of the resonators gradually toward the center side of the device. CONSTITUTION:Metallic strips 5 and 6 are so formed that the electrode closer to the center side of the elastic surface wave device will have a narrower electrode interval. Therefor resonator structure, variance in center frequency due to variance in film thickness can be reduced, so that constant frequency characteristisc can be obtained without reference to the variance in film thickness.
JP15438579A 1979-11-30 1979-11-30 Elastic surface wave device Pending JPS5678219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15438579A JPS5678219A (en) 1979-11-30 1979-11-30 Elastic surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15438579A JPS5678219A (en) 1979-11-30 1979-11-30 Elastic surface wave device

Publications (1)

Publication Number Publication Date
JPS5678219A true JPS5678219A (en) 1981-06-27

Family

ID=15582972

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15438579A Pending JPS5678219A (en) 1979-11-30 1979-11-30 Elastic surface wave device

Country Status (1)

Country Link
JP (1) JPS5678219A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58223912A (en) * 1982-06-23 1983-12-26 Nec Corp Surface acoustic wave filter
JPS60259010A (en) * 1984-06-06 1985-12-21 Toshiba Corp Elastic surface wave resonator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS58223912A (en) * 1982-06-23 1983-12-26 Nec Corp Surface acoustic wave filter
JPS60259010A (en) * 1984-06-06 1985-12-21 Toshiba Corp Elastic surface wave resonator

Similar Documents

Publication Publication Date Title
JPS53145595A (en) Elastic surface wave oscillator
JPS5799813A (en) Surface acoustic wave resonator
JPS5291669A (en) Piezoelectric vibrator
JPS5678219A (en) Elastic surface wave device
JPS5412542A (en) Elastic surface wave unit
JPS53125792A (en) Resonator for elastic surface wave
JPS5435657A (en) Surface slip wave resonator filter
JPS52153647A (en) Elastic surface wave element
JPS5330854A (en) Surface acoustic wave oscillator
JPS52140289A (en) Thickness shear crystal oscillator
JPS5768925A (en) Piezoelectric device
JPS5463651A (en) Elastic surface wave device
JPS5299750A (en) Zone filter
JPS56149814A (en) Elastic surface wave filter
JPS5763920A (en) Surface acoustic wave device
JPS5445592A (en) Thickness slip oscillator
JPS5684019A (en) Surface elastic wave resonator
JPS55121729A (en) Surface elastic wave element
JPS5441691A (en) Manufacture for elastic surface wave element
JPS5520037A (en) Multiple mode oscillator
JPS57204602A (en) Dielectric filter
JPS51114844A (en) Acoustic surface wave bandpass filter
JPS56128093A (en) Thickness piezoelectric type electroacoustic transducer
JPS5752214A (en) Structure body of surface acoustic wave resonator
JPS5570118A (en) Electric filter