DK12991A - Overfladeboelgefilter med lavt tab - Google Patents

Overfladeboelgefilter med lavt tab Download PDF

Info

Publication number
DK12991A
DK12991A DK012991A DK12991A DK12991A DK 12991 A DK12991 A DK 12991A DK 012991 A DK012991 A DK 012991A DK 12991 A DK12991 A DK 12991A DK 12991 A DK12991 A DK 12991A
Authority
DK
Denmark
Prior art keywords
wave filter
surface wave
low loss
loss surface
low
Prior art date
Application number
DK012991A
Other languages
English (en)
Other versions
DK12991D0 (da
Inventor
Kimon Anemogiannis
Folkhard Mueller
Original Assignee
Siemens Ag
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 Siemens Ag filed Critical Siemens Ag
Publication of DK12991A publication Critical patent/DK12991A/da
Publication of DK12991D0 publication Critical patent/DK12991D0/da

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
    • H03H9/14526—Finger withdrawal

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Coils Or Transformers For Communication (AREA)
DK012991A 1988-09-29 1991-01-25 Overfladeboelgefilter med lavt tab DK12991D0 (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3833101A DE3833101A1 (de) 1988-09-29 1988-09-29 Wandler mit weglasswichtung fuer oberflaechenwellenfilter
PCT/DE1989/000554 WO1990003691A1 (de) 1988-09-29 1989-08-23 Wandler mit weglasswichtung für oberflächenwellenfilter

Publications (2)

Publication Number Publication Date
DK12991A true DK12991A (da) 1991-01-25
DK12991D0 DK12991D0 (da) 1991-01-25

Family

ID=6363993

Family Applications (1)

Application Number Title Priority Date Filing Date
DK012991A DK12991D0 (da) 1988-09-29 1991-01-25 Overfladeboelgefilter med lavt tab

Country Status (8)

Country Link
EP (1) EP0436566B1 (da)
JP (1) JPH03502868A (da)
DE (2) DE3833101A1 (da)
DK (1) DK12991D0 (da)
ES (1) ES2016182A6 (da)
GR (1) GR890100594A (da)
PT (1) PT91838B (da)
WO (1) WO1990003691A1 (da)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE9802487D0 (sv) 1998-07-09 1998-07-09 Sandvik Ab Cemented carbide insert with binder phase enriched surface zone
JP3371849B2 (ja) 1999-04-28 2003-01-27 株式会社村田製作所 Ｓａｗ共振子、複合ｓａｗフィルタ及びｓａｗフィルタ

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4254387A (en) * 1977-10-06 1981-03-03 U.S. Philips Corporation Acoustic wave devices
JPS57202114A (en) * 1981-06-05 1982-12-10 Hitachi Ltd Band pass filter
JPS5834047A (ja) * 1981-08-25 1983-02-28 坂井　康男 砕石機
US4506239A (en) * 1982-10-25 1985-03-19 Motorola, Inc. Compound surface acoustic wave matched filters
US4491758A (en) * 1983-05-03 1985-01-01 R F Monolithics, Inc. Surface wave device with oversampled withdrawal weighting
JPS63253712A (ja) * 1987-04-10 1988-10-20 Hitachi Ltd 弾性表面波バンドパスフイルタ

Also Published As

Publication number Publication date
DE3833101A1 (de) 1990-04-05
GR890100594A (el) 1990-10-31
EP0436566A1 (de) 1991-07-17
PT91838A (pt) 1990-03-30
EP0436566B1 (de) 1993-03-10
PT91838B (pt) 1995-07-18
ES2016182A6 (es) 1990-10-16
DE58903756D1 (de) 1993-04-15
JPH03502868A (ja) 1991-06-27
DK12991D0 (da) 1991-01-25
WO1990003691A1 (de) 1990-04-05

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