JPS53116756A - Inter-digital transducer for elastic surface wave - Google Patents

Inter-digital transducer for elastic surface wave

Info

Publication number
JPS53116756A
JPS53116756A JP3133877A JP3133877A JPS53116756A JP S53116756 A JPS53116756 A JP S53116756A JP 3133877 A JP3133877 A JP 3133877A JP 3133877 A JP3133877 A JP 3133877A JP S53116756 A JPS53116756 A JP S53116756A
Authority
JP
Japan
Prior art keywords
surface wave
inter
elastic surface
digital transducer
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
JP3133877A
Other languages
Japanese (ja)
Other versions
JPS619768B2 (en
Inventor
Hideaki Kamiyama
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
Tokyo Shibaura 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 Toshiba Corp, Tokyo Shibaura Electric Co Ltd filed Critical Toshiba Corp
Priority to JP3133877A priority Critical patent/JPS53116756A/en
Publication of JPS53116756A publication Critical patent/JPS53116756A/en
Publication of JPS619768B2 publication Critical patent/JPS619768B2/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
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • 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
    • H03H9/14564—Shifted fingers transducers
    • H03H9/14567—Stepped-fan shaped 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
    • H03H9/125—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
    • H03H9/1457—Transducers having different finger widths

Abstract

PURPOSE:To reduce the trap of surface wave energy by constituting this transducer by combining alternately finger-shaped electrodes having plural different parts in width and suppressing the reflection from finger-shaped electrodes dependent upon the difference of acoustic impedance between the electrode part and the interval part.
JP3133877A 1977-03-22 1977-03-22 Inter-digital transducer for elastic surface wave Granted JPS53116756A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3133877A JPS53116756A (en) 1977-03-22 1977-03-22 Inter-digital transducer for elastic surface wave

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3133877A JPS53116756A (en) 1977-03-22 1977-03-22 Inter-digital transducer for elastic surface wave

Publications (2)

Publication Number Publication Date
JPS53116756A true JPS53116756A (en) 1978-10-12
JPS619768B2 JPS619768B2 (en) 1986-03-26

Family

ID=12328452

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3133877A Granted JPS53116756A (en) 1977-03-22 1977-03-22 Inter-digital transducer for elastic surface wave

Country Status (1)

Country Link
JP (1) JPS53116756A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014192756A1 (en) * 2013-05-29 2014-12-04 株式会社村田製作所 Acoustic wave device
WO2017210177A1 (en) * 2016-06-01 2017-12-07 Snaptrack, Inc. Saw filter with interference mode suppression
JP2019125856A (en) * 2018-01-12 2019-07-25 太陽誘電株式会社 Acoustic wave resonator, filter and multiplexer

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014192756A1 (en) * 2013-05-29 2014-12-04 株式会社村田製作所 Acoustic wave device
CN105284047A (en) * 2013-05-29 2016-01-27 株式会社村田制作所 Elastic wave device
JPWO2014192756A1 (en) * 2013-05-29 2017-02-23 株式会社村田製作所 Elastic wave device
US10009009B2 (en) 2013-05-29 2018-06-26 Murata Manufacturing Co., Ltd. Elastic wave device including electrode fingers with elongated sections
WO2017210177A1 (en) * 2016-06-01 2017-12-07 Snaptrack, Inc. Saw filter with interference mode suppression
CN109075765A (en) * 2016-06-01 2018-12-21 追踪有限公司 The SAW filter inhibited with jamming pattern
US20190140617A1 (en) * 2016-06-01 2019-05-09 Snaptrack, Inc. Saw filter with interference mode suppression
JP2019125856A (en) * 2018-01-12 2019-07-25 太陽誘電株式会社 Acoustic wave resonator, filter and multiplexer

Also Published As

Publication number Publication date
JPS619768B2 (en) 1986-03-26

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