JPS57186818A - Surface acoustic wave dispersion type delay line - Google Patents

Surface acoustic wave dispersion type delay line

Info

Publication number
JPS57186818A
JPS57186818A JP7252081A JP7252081A JPS57186818A JP S57186818 A JPS57186818 A JP S57186818A JP 7252081 A JP7252081 A JP 7252081A JP 7252081 A JP7252081 A JP 7252081A JP S57186818 A JPS57186818 A JP S57186818A
Authority
JP
Japan
Prior art keywords
reflection
transducer
reflected
dispersion type
right angles
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
JP7252081A
Other languages
Japanese (ja)
Inventor
Toshihiko Kitano
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 JP7252081A priority Critical patent/JPS57186818A/en
Publication of JPS57186818A publication Critical patent/JPS57186818A/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 obtain the satisfactory dispersion type delay characteristics, by using 4 reflection lattices for reflecting 2 reed screen type electrodes and a surface wave in the direction of right angles. CONSTITUTION:A surface wave radiated from an input transducer 22 is reflected in the direction of right angles by a reflection lattice 26, is further reflected in the direction of right angles by a reflection surface 27, and reaches an output transducer 23. Subsequently, when intervals of reflection elements constituting the reflection lattice are decreased gradually as they go away from the transducer 22, not only the frequency but also the delay time are increased. In the same way, the surface wave radiated from the transducer 22 is reflected in the direction of 180 deg. by reflected lattices 24, 25, and reaches the transducer 23, but in this case, on the contrary, intervals of reflection elements constituting the reflection lattice are increased gradually as they go away from the transducer 22, and the frequency is increased and the delay time is decreased.
JP7252081A 1981-05-14 1981-05-14 Surface acoustic wave dispersion type delay line Pending JPS57186818A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7252081A JPS57186818A (en) 1981-05-14 1981-05-14 Surface acoustic wave dispersion type delay line

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7252081A JPS57186818A (en) 1981-05-14 1981-05-14 Surface acoustic wave dispersion type delay line

Publications (1)

Publication Number Publication Date
JPS57186818A true JPS57186818A (en) 1982-11-17

Family

ID=13491683

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7252081A Pending JPS57186818A (en) 1981-05-14 1981-05-14 Surface acoustic wave dispersion type delay line

Country Status (1)

Country Link
JP (1) JPS57186818A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01153732U (en) * 1988-04-18 1989-10-23
JPH02189015A (en) * 1989-01-17 1990-07-25 Clarion Co Ltd Surface acoustic wave device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH01153732U (en) * 1988-04-18 1989-10-23
JPH02189015A (en) * 1989-01-17 1990-07-25 Clarion Co Ltd Surface acoustic wave device

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