JPS5931890B2 - 弾性表面波フイルタ - Google Patents

弾性表面波フイルタ

Info

Publication number
JPS5931890B2
JPS5931890B2 JP51146504A JP14650476A JPS5931890B2 JP S5931890 B2 JPS5931890 B2 JP S5931890B2 JP 51146504 A JP51146504 A JP 51146504A JP 14650476 A JP14650476 A JP 14650476A JP S5931890 B2 JPS5931890 B2 JP S5931890B2
Authority
JP
Japan
Prior art keywords
surface acoustic
idt
acoustic wave
wave filter
frequency
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
Application number
JP51146504A
Other languages
English (en)
Japanese (ja)
Other versions
JPS5371548A (en
Inventor
剛 間
純 山田
良彦 野呂
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP51146504A priority Critical patent/JPS5931890B2/ja
Priority to US05/857,908 priority patent/US4223285A/en
Priority to FR7736906A priority patent/FR2373917A1/fr
Priority to GB51012/77A priority patent/GB1593300A/en
Priority to DE2754494A priority patent/DE2754494C2/de
Publication of JPS5371548A publication Critical patent/JPS5371548A/ja
Publication of JPS5931890B2 publication Critical patent/JPS5931890B2/ja
Expired 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
    • H03H9/6423—Means for obtaining a particular transfer characteristic
    • 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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02874—Means for compensation or elimination of undesirable effects of direct coupling between input and output transducers
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Processing Of Color Television Signals (AREA)
JP51146504A 1976-12-08 1976-12-08 弾性表面波フイルタ Expired JPS5931890B2 (ja)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP51146504A JPS5931890B2 (ja) 1976-12-08 1976-12-08 弾性表面波フイルタ
US05/857,908 US4223285A (en) 1976-12-08 1977-12-06 Elastic surface wave filter
FR7736906A FR2373917A1 (fr) 1976-12-08 1977-12-07 Filtre d'ondes de surface elastique
GB51012/77A GB1593300A (en) 1976-12-08 1977-12-07 Elastic surface wave filter
DE2754494A DE2754494C2 (de) 1976-12-08 1977-12-07 Akustisches Oberflächenwellenfilter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP51146504A JPS5931890B2 (ja) 1976-12-08 1976-12-08 弾性表面波フイルタ

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP6050186A Division JPS61262312A (ja) 1986-03-20 1986-03-20 弾性表面波フイルタ

Publications (2)

Publication Number Publication Date
JPS5371548A JPS5371548A (en) 1978-06-26
JPS5931890B2 true JPS5931890B2 (ja) 1984-08-04

Family

ID=15409114

Family Applications (1)

Application Number Title Priority Date Filing Date
JP51146504A Expired JPS5931890B2 (ja) 1976-12-08 1976-12-08 弾性表面波フイルタ

Country Status (5)

Country Link
US (1) US4223285A (ref)
JP (1) JPS5931890B2 (ref)
DE (1) DE2754494C2 (ref)
FR (1) FR2373917A1 (ref)
GB (1) GB1593300A (ref)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS55134587A (en) * 1979-04-05 1980-10-20 Sanyo Electric Co Ltd Color television receiver
JPS5648708A (en) * 1979-09-28 1981-05-02 Hitachi Ltd Surface elastic wave filter
US4321567A (en) * 1980-03-24 1982-03-23 Raytheon Company Combining series sections weighting with withdrawal weighting in SAW transducers
JPS5992613A (ja) * 1982-11-19 1984-05-28 Hitachi Ltd 弾性表面波装置
US4531149A (en) * 1983-06-24 1985-07-23 Rca Corporation Digital variable group delay equalizer for a digital television receiver
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
US4825467A (en) * 1986-11-25 1989-04-25 International Telesystems, Inc. Restricted access television transmission system
US5654774A (en) * 1995-06-06 1997-08-05 Thomson Consumer Electronics, Inc. Tuner for digital satellite receiver
TW353245B (en) * 1995-06-06 1999-02-21 Thomson Consumer Electronics Saw filter for a tuner of a digital satellite receiver
US9568190B2 (en) 2014-06-13 2017-02-14 Integrated Energy LLC Systems, apparatus, and methods for treating waste materials

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2036374A5 (ref) * 1969-03-12 1970-12-24 Thomson Csf
US3675163A (en) * 1970-08-26 1972-07-04 Clinton S Hartmann Cascaded f. m. correlators for long pulses
GB1499330A (en) * 1974-09-26 1978-02-01 Plessey Co Ltd Acoustic surface wave filters
DE2524649C3 (de) * 1975-06-03 1980-11-06 Siemens Ag, 1000 Berlin Und 8000 Muenchen Fernseh-ZF-Filter nach dem Oberflächenwellenprinzip
US4047130A (en) * 1976-08-27 1977-09-06 Rockwell International Corporation Surface acoustic wave filter

Also Published As

Publication number Publication date
JPS5371548A (en) 1978-06-26
FR2373917B1 (ref) 1982-03-12
US4223285A (en) 1980-09-16
DE2754494C2 (de) 1984-01-05
DE2754494A1 (de) 1978-06-22
GB1593300A (en) 1981-07-15
FR2373917A1 (fr) 1978-07-07

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