JPS5648708A - Surface elastic wave filter - Google Patents

Surface elastic wave filter

Info

Publication number
JPS5648708A
JPS5648708A JP12420079A JP12420079A JPS5648708A JP S5648708 A JPS5648708 A JP S5648708A JP 12420079 A JP12420079 A JP 12420079A JP 12420079 A JP12420079 A JP 12420079A JP S5648708 A JPS5648708 A JP S5648708A
Authority
JP
Japan
Prior art keywords
electrode
elastic wave
surface elastic
cross
width
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
JP12420079A
Other languages
English (en)
Other versions
JPH0224050B2 (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 JP12420079A priority Critical patent/JPS5648708A/ja
Publication of JPS5648708A publication Critical patent/JPS5648708A/ja
Publication of JPH0224050B2 publication Critical patent/JPH0224050B2/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
    • H03H9/14517—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 devices; Electromechanical resonators
    • H03H9/46—Filters
    • H03H9/64—Filters using surface acoustic waves
    • H03H9/6489—Compensation of undesirable effects

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
JP12420079A 1979-09-28 1979-09-28 Surface elastic wave filter Granted JPS5648708A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12420079A JPS5648708A (en) 1979-09-28 1979-09-28 Surface elastic wave filter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12420079A JPS5648708A (en) 1979-09-28 1979-09-28 Surface elastic wave filter

Publications (2)

Publication Number Publication Date
JPS5648708A true JPS5648708A (en) 1981-05-02
JPH0224050B2 JPH0224050B2 (ja) 1990-05-28

Family

ID=14879456

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12420079A Granted JPS5648708A (en) 1979-09-28 1979-09-28 Surface elastic wave filter

Country Status (1)

Country Link
JP (1) JPS5648708A (ja)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131911A (ja) * 1974-09-13 1976-03-18 Hitachi Ltd Reikyakuyochukubuosonaetakaitentai
JPS59155593A (ja) * 1983-02-24 1984-09-04 Nippon Piston Ring Co Ltd 回転式流体ポンプ用ロ−タ
JPS60249412A (ja) * 1984-04-09 1985-12-10 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン 弾性表面波電気フイルタ及びその製造方法
JPS6116267A (ja) * 1984-06-30 1986-01-24 Nissan Motor Co Ltd 内燃機関の制御装置
JPH0583077A (ja) * 1991-09-24 1993-04-02 Mitsubishi Electric Corp 弾性表面波回路装置

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5371548A (en) * 1976-12-08 1978-06-26 Hitachi Ltd Elastic surface wave filter
JPS5394155A (en) * 1977-01-28 1978-08-17 Hitachi Ltd Elastic surface wave filter

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5371548A (en) * 1976-12-08 1978-06-26 Hitachi Ltd Elastic surface wave filter
JPS5394155A (en) * 1977-01-28 1978-08-17 Hitachi Ltd Elastic surface wave filter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5131911A (ja) * 1974-09-13 1976-03-18 Hitachi Ltd Reikyakuyochukubuosonaetakaitentai
JPS5648708B2 (ja) * 1974-09-13 1981-11-17
JPS59155593A (ja) * 1983-02-24 1984-09-04 Nippon Piston Ring Co Ltd 回転式流体ポンプ用ロ−タ
JPS60249412A (ja) * 1984-04-09 1985-12-10 エヌ・ベ−・フイリツプス・フル−イランペンフアブリケン 弾性表面波電気フイルタ及びその製造方法
JPS6116267A (ja) * 1984-06-30 1986-01-24 Nissan Motor Co Ltd 内燃機関の制御装置
JPH0583077A (ja) * 1991-09-24 1993-04-02 Mitsubishi Electric Corp 弾性表面波回路装置

Also Published As

Publication number Publication date
JPH0224050B2 (ja) 1990-05-28

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