JPS56149817A - Dispersion delay line of elastic surface wave - Google Patents

Dispersion delay line of elastic surface wave

Info

Publication number
JPS56149817A
JPS56149817A JP5390380A JP5390380A JPS56149817A JP S56149817 A JPS56149817 A JP S56149817A JP 5390380 A JP5390380 A JP 5390380A JP 5390380 A JP5390380 A JP 5390380A JP S56149817 A JPS56149817 A JP S56149817A
Authority
JP
Japan
Prior art keywords
surface wave
elastic surface
electrode
signal
straight line
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
JP5390380A
Other languages
Japanese (ja)
Inventor
Toshihiko Kitano
Katsuhiko Nishikawa
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.)
NEC Corp
Original Assignee
NEC Corp
Nippon 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 NEC Corp, Nippon Electric Co Ltd filed Critical NEC Corp
Priority to JP5390380A priority Critical patent/JPS56149817A/en
Publication of JPS56149817A publication Critical patent/JPS56149817A/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
    • H03H9/44—Frequency dependent delay lines, e.g. dispersive delay lines

Landscapes

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

Abstract

PURPOSE:To prevent deterioration of a compression pulse waveform, by making the shape of a signal taking-out electrode into a triangle, in the elastic surface wave element having an inclined grid electrode. CONSTITUTION:A straight line which is parallel in the propagation direction of the elastic surface wave and also crosses the signal thaking-out electrode 33, and a production of the electrode finger which is the nearest to the symmetrical axis O1'' - O2'' of electrodes 31, 32 are denoted as l, and (m), respectively, and a point of intersection of the straight lines l (m) and points of intersection of the signal fetch electrode 33 and the straight line l are denoted as A and B, C, respectively, and in this case, when the shape of the signal taking-out electrode is set so as to be CB/AB = constant, an average speed of the elastic surface wave being along the straight line l of the part including the signal taking-out electrode part and the free surface part is always equal. In other words, the upper part 35 and the lower part 36 of the elastic surface wave beam which is excited from the electrode finger 34 attain to the axis O1'' - O2'' almost simultaneously.
JP5390380A 1980-04-23 1980-04-23 Dispersion delay line of elastic surface wave Pending JPS56149817A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5390380A JPS56149817A (en) 1980-04-23 1980-04-23 Dispersion delay line of elastic surface wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5390380A JPS56149817A (en) 1980-04-23 1980-04-23 Dispersion delay line of elastic surface wave

Publications (1)

Publication Number Publication Date
JPS56149817A true JPS56149817A (en) 1981-11-19

Family

ID=12955670

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5390380A Pending JPS56149817A (en) 1980-04-23 1980-04-23 Dispersion delay line of elastic surface wave

Country Status (1)

Country Link
JP (1) JPS56149817A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04150108A (en) * 1990-10-09 1992-05-22 Nec Corp Surface acoustic wave element

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS547839A (en) * 1977-06-21 1979-01-20 Toshiba Corp Elastic surface wave unit

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS547839A (en) * 1977-06-21 1979-01-20 Toshiba Corp Elastic surface wave unit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH04150108A (en) * 1990-10-09 1992-05-22 Nec Corp Surface acoustic wave element

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