JPH0356014B2 - - Google Patents

Info

Publication number
JPH0356014B2
JPH0356014B2 JP56142484A JP14248481A JPH0356014B2 JP H0356014 B2 JPH0356014 B2 JP H0356014B2 JP 56142484 A JP56142484 A JP 56142484A JP 14248481 A JP14248481 A JP 14248481A JP H0356014 B2 JPH0356014 B2 JP H0356014B2
Authority
JP
Japan
Prior art keywords
transducer
electrode fingers
filter
impulse response
lobe
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.)
Expired - Lifetime
Application number
JP56142484A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5844808A (ja
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 filed Critical
Priority to JP56142484A priority Critical patent/JPS5844808A/ja
Priority to US06/409,040 priority patent/US4458221A/en
Priority to DE8282304686T priority patent/DE3277793D1/de
Priority to EP82304686A priority patent/EP0074781B1/en
Priority to CA000411173A priority patent/CA1192633A/en
Publication of JPS5844808A publication Critical patent/JPS5844808A/ja
Publication of JPH0356014B2 publication Critical patent/JPH0356014B2/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 elements; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6489—Compensation of undesirable effects
    • H03H9/6493—Side lobe suppression
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H9/00—Networks comprising electromechanical or electro-acoustic elements; 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
    • H03H9/14517—Means for weighting
    • H03H9/1452—Means for weighting by finger overlap length, apodisation
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/42—Piezoelectric device making

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
JP56142484A 1981-09-11 1981-09-11 弾性表面波装置 Granted JPS5844808A (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP56142484A JPS5844808A (ja) 1981-09-11 1981-09-11 弾性表面波装置
US06/409,040 US4458221A (en) 1981-09-11 1982-08-18 Surface acoustic wave filter
DE8282304686T DE3277793D1 (en) 1981-09-11 1982-09-07 Surface acoustic wave filter
EP82304686A EP0074781B1 (en) 1981-09-11 1982-09-07 Surface acoustic wave filter
CA000411173A CA1192633A (en) 1981-09-11 1982-09-10 Surface acoustic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP56142484A JPS5844808A (ja) 1981-09-11 1981-09-11 弾性表面波装置

Publications (2)

Publication Number Publication Date
JPS5844808A JPS5844808A (ja) 1983-03-15
JPH0356014B2 true JPH0356014B2 (en, 2012) 1991-08-27

Family

ID=15316390

Family Applications (1)

Application Number Title Priority Date Filing Date
JP56142484A Granted JPS5844808A (ja) 1981-09-11 1981-09-11 弾性表面波装置

Country Status (5)

Country Link
US (1) US4458221A (en, 2012)
EP (1) EP0074781B1 (en, 2012)
JP (1) JPS5844808A (en, 2012)
CA (1) CA1192633A (en, 2012)
DE (1) DE3277793D1 (en, 2012)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2157522B (en) * 1984-04-09 1987-08-19 Philips Electronic Associated Electrical filter comprising an acoustic surface wave device, and method of manufacturing such a filter
US5028831A (en) * 1990-04-04 1991-07-02 Motorola, Inc. SAW reflectionless quarter-wavelength transducers
US6025762A (en) * 1999-01-11 2000-02-15 Cts Corporation Delay line incorporating a surface acoustic wave ladder filter and method of providing same
US7221074B2 (en) * 2003-11-18 2007-05-22 Fujitsu Media Devices Limited Surface acoustic device
JP2007060108A (ja) * 2005-08-23 2007-03-08 Fujitsu Media Device Kk 弾性表面波装置
JP4654271B2 (ja) * 2008-06-25 2011-03-16 日本電波工業株式会社 トランスバーサル型フィルタ
CN106419955B (zh) * 2016-09-07 2019-08-13 苏州国科昂卓医疗科技有限公司 超声波束合成方法的应用及剪切波超声弹性成像方法

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036374A5 (en, 2012) * 1969-03-12 1970-12-24 Thomson Csf
FR2040881A5 (en, 2012) * 1969-04-16 1971-01-22 Thomson Csf
JPS5915524B2 (ja) * 1976-05-10 1984-04-10 株式会社東芝 弾性表面波フイルタ
JPS5947494B2 (ja) * 1977-01-28 1984-11-19 株式会社日立製作所 弾性表面波フイルタ
JPS5555615A (en) * 1978-10-20 1980-04-23 Hitachi Ltd Surface acoustic wave filter
JPS5636604A (en) * 1979-08-31 1981-04-09 Nippon Telegr & Teleph Corp <Ntt> Single core optical fiber cable

Also Published As

Publication number Publication date
EP0074781A3 (en) 1984-12-12
DE3277793D1 (en) 1988-01-14
JPS5844808A (ja) 1983-03-15
CA1192633A (en) 1985-08-27
EP0074781A2 (en) 1983-03-23
EP0074781B1 (en) 1987-12-02
US4458221A (en) 1984-07-03

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