JPS56144623A - Time-axis inversion device - Google Patents

Time-axis inversion device

Info

Publication number
JPS56144623A
JPS56144623A JP4894180A JP4894180A JPS56144623A JP S56144623 A JPS56144623 A JP S56144623A JP 4894180 A JP4894180 A JP 4894180A JP 4894180 A JP4894180 A JP 4894180A JP S56144623 A JPS56144623 A JP S56144623A
Authority
JP
Japan
Prior art keywords
saw
traveling
wave
terminals
strike
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
JP4894180A
Other languages
Japanese (ja)
Inventor
Yasuto Takeuchi
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.)
Yokogawa Electric Corp
Original Assignee
Yokogawa Hokushin Electric Corp
Yokogawa Electric Works 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 Yokogawa Hokushin Electric Corp, Yokogawa Electric Works Ltd filed Critical Yokogawa Hokushin Electric Corp
Priority to JP4894180A priority Critical patent/JPS56144623A/en
Publication of JPS56144623A publication Critical patent/JPS56144623A/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
    • H03H9/30—Time-delay networks
    • H03H9/42—Time-delay networks using surface acoustic waves
    • 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
    • H03H9/0296—Surface acoustic wave [SAW] devices having both acoustic and non-acoustic properties

Landscapes

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

Abstract

PURPOSE:To invert the time axis by returning a traveling signal wave to its arrival direction, by causing an impulsive ultrasonic wave to strike the signal wave. CONSTITUTION:Electric signals inputted from terminals 2 and 2' are converted into surface wave (SAW) by transducer 1. Then, SAW travles straight on the surface of sound-transmissible substrate 4 from left to right. Pulse generator 7, on the other hand, actuates ultrasonic-wave generating means 5 to generate BULK waves. The BULK waves strike the traveling SAW at the same time over the entire surface of sound-transmissible substrate 4. Once both those waves strike mutually, the nonlinearity characteristic to SAW provides integration effect. As a result, SAW is separated into a component which is further traveling ahead and components which are traveling back to terminals 2 and 2'. Those traveling-back components are led out from terminals 2 and 2' to obtain a signal having the time axis inverted, thereby performing time-axis inverting operation.
JP4894180A 1980-04-14 1980-04-14 Time-axis inversion device Pending JPS56144623A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP4894180A JPS56144623A (en) 1980-04-14 1980-04-14 Time-axis inversion device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4894180A JPS56144623A (en) 1980-04-14 1980-04-14 Time-axis inversion device

Publications (1)

Publication Number Publication Date
JPS56144623A true JPS56144623A (en) 1981-11-11

Family

ID=12817294

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4894180A Pending JPS56144623A (en) 1980-04-14 1980-04-14 Time-axis inversion device

Country Status (1)

Country Link
JP (1) JPS56144623A (en)

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