JPS5528678A - Reed screen shape electrode - Google Patents

Reed screen shape electrode

Info

Publication number
JPS5528678A
JPS5528678A JP10262478A JP10262478A JPS5528678A JP S5528678 A JPS5528678 A JP S5528678A JP 10262478 A JP10262478 A JP 10262478A JP 10262478 A JP10262478 A JP 10262478A JP S5528678 A JPS5528678 A JP S5528678A
Authority
JP
Japan
Prior art keywords
boundary
side lobe
electrode
lobe
electrode finger
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.)
Granted
Application number
JP10262478A
Other languages
Japanese (ja)
Other versions
JPS622724B2 (en
Inventor
Yuji Higuchi
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 JP10262478A priority Critical patent/JPS5528678A/en
Publication of JPS5528678A publication Critical patent/JPS5528678A/en
Publication of JPS622724B2 publication Critical patent/JPS622724B2/ja
Granted 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
    • H03H9/02—Details
    • H03H9/125—Driving means, e.g. electrodes, coils
    • H03H9/145—Driving means, e.g. electrodes, coils for networks using surface acoustic waves
    • H03H9/14544—Transducers of particular shape or position
    • H03H9/14547—Fan shaped; Tilted; Shifted; Slanted; Tapered; Arched; Stepped finger transducers
    • 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
    • H03H9/02637—Details concerning reflective or coupling arrays

Landscapes

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

Abstract

PURPOSE:To reduce unnecessary coupling of electrode fingers, by omitting a part of the electrode finger at the boundary between the main lobe and the side lobe partly. CONSTITUTION:In the reed screen electrode 2 in which the position of the side lobe is partly shifted to the main lobe orthogonally to the surface wave propagation direction, the electrode finger at the boundary between the main lobe and the side lobe is partly omitted. As a result, since the coupling section q having unnecessary part hatched has greater coupling distance, the excitation of surface waves is remarkably reduced for the part. Generally, in the reed screen electrode having rectangular band characteristics, since the envelope waveform of the electrode finger is the waveform expressed in Sin X/X, when a part of the effective opening is shifted in parallel with orthogonal direction of surface wave propagation, the effective opening length is sufficiently small at the boundary of the side lobe through parallel shift of the effective opening at the boundary of side lobe, and if a part of the electrode finger for the part is omitted, the deterioration in the performance is very less.
JP10262478A 1978-08-22 1978-08-22 Reed screen shape electrode Granted JPS5528678A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10262478A JPS5528678A (en) 1978-08-22 1978-08-22 Reed screen shape electrode

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10262478A JPS5528678A (en) 1978-08-22 1978-08-22 Reed screen shape electrode

Publications (2)

Publication Number Publication Date
JPS5528678A true JPS5528678A (en) 1980-02-29
JPS622724B2 JPS622724B2 (en) 1987-01-21

Family

ID=14332387

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10262478A Granted JPS5528678A (en) 1978-08-22 1978-08-22 Reed screen shape electrode

Country Status (1)

Country Link
JP (1) JPS5528678A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656028A (en) * 1979-10-11 1981-05-16 Murata Mfg Co Ltd Elastic surface wave filter
JPS5656029A (en) * 1979-10-11 1981-05-16 Murata Mfg Co Ltd Elastic surface wave filter
JPS5843609A (en) * 1981-09-09 1983-03-14 Toshiba Corp Surface acoustic wave device
JPS5840928U (en) * 1981-09-10 1983-03-17 株式会社東芝 surface acoustic wave filter

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63293268A (en) * 1987-05-23 1988-11-30 ド−エイ外装有限会社 Outer eall panel mount method and outer wall apparatus
JPH0213650A (en) * 1988-06-28 1990-01-18 Ig Tech Res Inc Panel for building

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5656028A (en) * 1979-10-11 1981-05-16 Murata Mfg Co Ltd Elastic surface wave filter
JPS5656029A (en) * 1979-10-11 1981-05-16 Murata Mfg Co Ltd Elastic surface wave filter
JPS6210046B2 (en) * 1979-10-11 1987-03-04 Murata Manufacturing Co
JPS6210045B2 (en) * 1979-10-11 1987-03-04 Murata Manufacturing Co
JPS5843609A (en) * 1981-09-09 1983-03-14 Toshiba Corp Surface acoustic wave device
JPS6363128B2 (en) * 1981-09-09 1988-12-06
JPS5840928U (en) * 1981-09-10 1983-03-17 株式会社東芝 surface acoustic wave filter

Also Published As

Publication number Publication date
JPS622724B2 (en) 1987-01-21

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