JPS5566120A - Elastic surface wave device - Google Patents

Elastic surface wave device

Info

Publication number
JPS5566120A
JPS5566120A JP13887778A JP13887778A JPS5566120A JP S5566120 A JPS5566120 A JP S5566120A JP 13887778 A JP13887778 A JP 13887778A JP 13887778 A JP13887778 A JP 13887778A JP S5566120 A JPS5566120 A JP S5566120A
Authority
JP
Japan
Prior art keywords
electrode
elastic surface
surface wave
cross width
pairs
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
JP13887778A
Other languages
English (en)
Japanese (ja)
Inventor
Jun Yamada
Takeshi Hazama
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 JP13887778A priority Critical patent/JPS5566120A/ja
Priority to DE19792945643 priority patent/DE2945643A1/de
Priority to GB7939311A priority patent/GB2044569B/en
Publication of JPS5566120A publication Critical patent/JPS5566120A/ja
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 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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
JP13887778A 1978-11-13 1978-11-13 Elastic surface wave device Pending JPS5566120A (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
JP13887778A JPS5566120A (en) 1978-11-13 1978-11-13 Elastic surface wave device
DE19792945643 DE2945643A1 (de) 1978-11-13 1979-11-12 Einrichtung fuer akustische oberflaechenwellen mit asymmetrischer amplitudencharakteristik
GB7939311A GB2044569B (en) 1978-11-13 1979-11-13 Surface acoustic wave device having asymmetrical amplitudecharacteristics

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13887778A JPS5566120A (en) 1978-11-13 1978-11-13 Elastic surface wave device

Publications (1)

Publication Number Publication Date
JPS5566120A true JPS5566120A (en) 1980-05-19

Family

ID=15232194

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13887778A Pending JPS5566120A (en) 1978-11-13 1978-11-13 Elastic surface wave device

Country Status (3)

Country Link
JP (1) JPS5566120A (cs)
DE (1) DE2945643A1 (cs)
GB (1) GB2044569B (cs)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5836012A (ja) * 1981-08-27 1983-03-02 Seiko Epson Corp 弾性表面波装置

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2817041B2 (ja) * 1986-09-19 1998-10-27 株式会社日立製作所 弾性表面波装置
DE19512251C2 (de) * 1995-03-31 1997-04-03 Siemens Ag Interdigitalwandler für ein Oberflächenfilter
GB2306821B (en) * 1995-11-03 2000-05-31 Advanced Saw Prod Sa Electro-acoustic device
GB2308530B (en) * 1995-12-21 2000-03-22 Nokia Mobile Phones Ltd Antenna selection control circuitry

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3818379A (en) * 1972-12-04 1974-06-18 Hughes Aircraft Co Acoustic surface wave device
FR2319245A1 (fr) * 1975-07-24 1977-02-18 Thomson Csf Transducteur perfectionne pour filtre a ondes de surface a fonction de transfert asymetrique et filtre comportant un tel transducteur
DE2615719A1 (de) * 1976-04-09 1977-10-27 Siemens Ag Filter nach dem oberflaechenwellenprinzip

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5836012A (ja) * 1981-08-27 1983-03-02 Seiko Epson Corp 弾性表面波装置

Also Published As

Publication number Publication date
DE2945643C2 (cs) 1988-08-11
GB2044569B (en) 1983-02-23
DE2945643A1 (de) 1980-06-19
GB2044569A (en) 1980-10-15

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