JPS55141813A - Surface acoustic wave device - Google Patents

Surface acoustic wave device

Info

Publication number
JPS55141813A
JPS55141813A JP5097779A JP5097779A JPS55141813A JP S55141813 A JPS55141813 A JP S55141813A JP 5097779 A JP5097779 A JP 5097779A JP 5097779 A JP5097779 A JP 5097779A JP S55141813 A JPS55141813 A JP S55141813A
Authority
JP
Japan
Prior art keywords
electrode
partial
attenuation
electrodes
providing
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
JP5097779A
Other languages
Japanese (ja)
Other versions
JPH0224048B2 (en
Inventor
Michio Kadota
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.)
Murata Manufacturing Co Ltd
Original Assignee
Murata Manufacturing 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 Murata Manufacturing Co Ltd filed Critical Murata Manufacturing Co Ltd
Priority to JP5097779A priority Critical patent/JPS55141813A/en
Priority to US06/141,369 priority patent/US4384264A/en
Priority to DE19803015241 priority patent/DE3015241A1/en
Priority to GB8013177A priority patent/GB2047034B/en
Publication of JPS55141813A publication Critical patent/JPS55141813A/en
Publication of JPH0224048B2 publication Critical patent/JPH0224048B2/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

Landscapes

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

Abstract

PURPOSE:To increase the attenuation at the attenuation electrode, by constituting the two partial electrodes of the section type interdigital electrodes at least asymmetrically. CONSTITUTION:The capacitance by the partial electrode 2b is made greater by providing the additional finger 10 with the partial electrode 2b not grounded for the interdigital electrodes 2a, 2b in series connection with each other electrically, making different the number of pairs of each electrode, taking wide electrode finger of one partial electrode, providing unnecessary electrodes 15, 16, or providing the leading electrode 17. Further, the capacitance by the partial electrode 2a and that of the partial electrode 2b are made equal at actual mounting condition, allowing to compensate the deterioration of attenuation electrode due to mounting.
JP5097779A 1979-04-24 1979-04-24 Surface acoustic wave device Granted JPS55141813A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP5097779A JPS55141813A (en) 1979-04-24 1979-04-24 Surface acoustic wave device
US06/141,369 US4384264A (en) 1979-04-24 1980-04-18 Surface acoustic wave device
DE19803015241 DE3015241A1 (en) 1979-04-24 1980-04-21 COMPONENT FOR ACOUSTIC SURFACE WAVES
GB8013177A GB2047034B (en) 1979-04-24 1980-04-22 Surface acoustic wave device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5097779A JPS55141813A (en) 1979-04-24 1979-04-24 Surface acoustic wave device

Publications (2)

Publication Number Publication Date
JPS55141813A true JPS55141813A (en) 1980-11-06
JPH0224048B2 JPH0224048B2 (en) 1990-05-28

Family

ID=12873861

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5097779A Granted JPS55141813A (en) 1979-04-24 1979-04-24 Surface acoustic wave device

Country Status (1)

Country Link
JP (1) JPS55141813A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123117A (en) * 1980-03-05 1981-09-28 Murata Mfg Co Ltd Elastic surface wave device
WO2012160730A1 (en) * 2011-05-24 2012-11-29 株式会社村田製作所 Acoustic wave filter device

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389643A (en) * 1976-09-03 1978-08-07 Murata Manufacturing Co Elastic surface wave device

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5389643A (en) * 1976-09-03 1978-08-07 Murata Manufacturing Co Elastic surface wave device

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56123117A (en) * 1980-03-05 1981-09-28 Murata Mfg Co Ltd Elastic surface wave device
JPH0429245B2 (en) * 1980-03-05 1992-05-18
WO2012160730A1 (en) * 2011-05-24 2012-11-29 株式会社村田製作所 Acoustic wave filter device

Also Published As

Publication number Publication date
JPH0224048B2 (en) 1990-05-28

Similar Documents

Publication Publication Date Title
GB1362238A (en) Acoustic surface wave devices
JPS55141813A (en) Surface acoustic wave device
JPS5412542A (en) Elastic surface wave unit
JPS5467792A (en) Elastic surface wave element
JPS5773514A (en) Surface acoustic wave filter
JPS553280A (en) Composite elastic surface wave filter
JPS5765917A (en) Surface acoustic wave device
JPS53110349A (en) Elastic surface wave filter device
JPS55107319A (en) Surface acoustic wave filter
GB1514998A (en) Surface elastic wave filter
JPS51138362A (en) Grouped unidirectional elastic surface wave filter
JPS564916A (en) Elastic surface wave filter
JPS5711519A (en) Constituent for elastic surface wave resonator
JPS56123118A (en) Elastic surface wave device
JPS5466793A (en) Piezoelectric oscillator
JPS5258342A (en) Surface wave filter
JPS5672515A (en) Elastic surface wave device
JPS56126309A (en) Elastic surface wave filter
JPS55105427A (en) Surface wave device
KR850000813A (en) Spurious Attenuation Pole Suppressor in Piezoelectric Crystal Filter
JPS56123117A (en) Elastic surface wave device
JPS5623015A (en) Elastic surface wave filter
JPS56128011A (en) Surface elastic wave filter
Hohkawa et al. Surface acoustic wave filters without apodization loss
JPS56141613A (en) Surface wave equipment