JPS5580911A - Elastic surface wave device - Google Patents

Elastic surface wave device

Info

Publication number
JPS5580911A
JPS5580911A JP15521278A JP15521278A JPS5580911A JP S5580911 A JPS5580911 A JP S5580911A JP 15521278 A JP15521278 A JP 15521278A JP 15521278 A JP15521278 A JP 15521278A JP S5580911 A JPS5580911 A JP S5580911A
Authority
JP
Japan
Prior art keywords
electrode
surface wave
elastic surface
lambda
electrodes
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
JP15521278A
Other languages
Japanese (ja)
Inventor
Takao Chiba
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.)
Japan Broadcasting Corp
Original Assignee
Nippon Hoso Kyokai NHK
Japan Broadcasting Corp
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 Nippon Hoso Kyokai NHK, Japan Broadcasting Corp filed Critical Nippon Hoso Kyokai NHK
Priority to JP15521278A priority Critical patent/JPS5580911A/en
Publication of JPS5580911A publication Critical patent/JPS5580911A/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
    • H03H9/02—Details
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02637—Details concerning reflective or coupling arrays
    • H03H9/02685—Grating lines having particular arrangements
    • H03H9/0274—Intra-transducers grating lines
    • H03H9/02755—Meandering floating or grounded grating lines

Landscapes

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

Abstract

PURPOSE:To obtain the elastic surface wave featuring the one-way propagation properties of the good phase characteristics without causing the electrode reflection to the elastic surface wave. CONSTITUTION:Signal electrodes 3 and 5 are excited with the phase delay of 0 deg. and 90 deg. respectively. At the same time, earth electrode 6 is provided. For these electrodes, the rise and fall space 17 and 18 of section 14 are set to such value as lambda/4 (lambda: basic wavelength) and 3lambda/4 each, and thus the electrode reflection can be offset to each other between the earth electrode fingers. Thus the widths of the earth electrodes are set to lambda/8 and 5lambda/8. The necessary space is set for sections 15 and 16 as well. As a result, the equal general sum is secured for the widths the electrode finger part every electrode reflection offset sections 12 and 13 and the gap part between the electrode fingers. Thus the suitable application can be secured for various types of filters with no disturbance caused to the equal phase surface of the elastic surface wave.
JP15521278A 1978-12-15 1978-12-15 Elastic surface wave device Pending JPS5580911A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15521278A JPS5580911A (en) 1978-12-15 1978-12-15 Elastic surface wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15521278A JPS5580911A (en) 1978-12-15 1978-12-15 Elastic surface wave device

Publications (1)

Publication Number Publication Date
JPS5580911A true JPS5580911A (en) 1980-06-18

Family

ID=15600949

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15521278A Pending JPS5580911A (en) 1978-12-15 1978-12-15 Elastic surface wave device

Country Status (1)

Country Link
JP (1) JPS5580911A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7271685B2 (en) 2004-07-15 2007-09-18 Murata Manufacturing Co., Ltd. Surface acoustic wave filter

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7271685B2 (en) 2004-07-15 2007-09-18 Murata Manufacturing Co., Ltd. Surface acoustic wave filter

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