JPS56149816A - Dispersion delay line of elastic surface wave - Google Patents

Dispersion delay line of elastic surface wave

Info

Publication number
JPS56149816A
JPS56149816A JP5390280A JP5390280A JPS56149816A JP S56149816 A JPS56149816 A JP S56149816A JP 5390280 A JP5390280 A JP 5390280A JP 5390280 A JP5390280 A JP 5390280A JP S56149816 A JPS56149816 A JP S56149816A
Authority
JP
Japan
Prior art keywords
axis
electrodes
width
space
surface wave
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
JP5390280A
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 JP5390280A priority Critical patent/JPS56149816A/en
Publication of JPS56149816A publication Critical patent/JPS56149816A/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 signal taking-out electrodes have almost same space and width as those of the inclined grid electrodes. CONSTITUTION:The grid electrodes 31, 32 are provided on the piezoelectric substrate so as to be symmetrical to the virtual axis O1'' - O2''. The space between the electrode fingers is gradually varied as they get near the axis O1'' - O2''. The signal taking-out electrodes 33, 34 are of a grid form consisting of metallic strip lines, and their space and width are equal to those of the grid electrodes 31, 32. The upper part 36 and the lower part 37 of an elastic surface wave beam which is radiated from the position being the most distant from the axis O1'' - O2'' propagate the metallic striplines having the same space and width, therefore, the time required for reaching the axis O1'' - O2'' does not go out of order, and the equiphase surface in the beam is scarcely distorted.
JP5390280A 1980-04-23 1980-04-23 Dispersion delay line of elastic surface wave Pending JPS56149816A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5390280A JPS56149816A (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
JP5390280A JPS56149816A (en) 1980-04-23 1980-04-23 Dispersion delay line of elastic surface wave

Publications (1)

Publication Number Publication Date
JPS56149816A true JPS56149816A (en) 1981-11-19

Family

ID=12955642

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5390280A Pending JPS56149816A (en) 1980-04-23 1980-04-23 Dispersion delay line of elastic surface wave

Country Status (1)

Country Link
JP (1) JPS56149816A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138852A (en) * 1974-08-02 1976-03-31 Philips Nv

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5138852A (en) * 1974-08-02 1976-03-31 Philips Nv

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