JPS5467790A - Elastic surface wave phase shifter - Google Patents

Elastic surface wave phase shifter

Info

Publication number
JPS5467790A
JPS5467790A JP13443477A JP13443477A JPS5467790A JP S5467790 A JPS5467790 A JP S5467790A JP 13443477 A JP13443477 A JP 13443477A JP 13443477 A JP13443477 A JP 13443477A JP S5467790 A JPS5467790 A JP S5467790A
Authority
JP
Japan
Prior art keywords
strip electrodes
surface wave
elastic surface
pitch
lambda
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
JP13443477A
Other languages
Japanese (ja)
Inventor
Noboru Wakatsuki
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP13443477A priority Critical patent/JPS5467790A/en
Publication of JPS5467790A publication Critical patent/JPS5467790A/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
    • H03H9/66—Phase shifters
    • H03H9/68—Phase shifters using surface acoustic waves

Landscapes

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

Abstract

PURPOSE:To improve propagation efficiency by providing plural parallel strip electrodes to the propagation path on a piezoelectric substrate and making the pitch thereof odd times of 1/4 the wavelength of the central frequency. CONSTITUTION:If the pitch of strip electrodes 11 is made lambda/4 with respect to the wavelength lambda of the central frequency and elastic surface wave 1 is made to respective reflected waves 2, 3 for the strip electrodes 111, 112, then the phase difference of both reflected waves is equal to the going and returning of the pitch spacing, it becomes lambda/2 and the waves are mutually negated. Hence, the relations between the respective strip electrodes and the waveforms of the elastic surface wave are indicated by the relative positions of the upper part of the respective strip electrodes if (+), (-) are let to be the maximum levels of the waveforms and (0) to be 0 level.
JP13443477A 1977-11-09 1977-11-09 Elastic surface wave phase shifter Pending JPS5467790A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13443477A JPS5467790A (en) 1977-11-09 1977-11-09 Elastic surface wave phase shifter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13443477A JPS5467790A (en) 1977-11-09 1977-11-09 Elastic surface wave phase shifter

Publications (1)

Publication Number Publication Date
JPS5467790A true JPS5467790A (en) 1979-05-31

Family

ID=15128273

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13443477A Pending JPS5467790A (en) 1977-11-09 1977-11-09 Elastic surface wave phase shifter

Country Status (1)

Country Link
JP (1) JPS5467790A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2015141165A (en) * 2014-01-30 2015-08-03 日本無線株式会社 surface acoustic wave sensor and measuring device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
JP2015141165A (en) * 2014-01-30 2015-08-03 日本無線株式会社 surface acoustic wave sensor and measuring device

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