DK46591A - Overfladeboelge-interdigitaltransducer og overflade-boelge-filter med symmetrisk eller forudbestemt assymmetrisk overfoeringskarakteristik mellem indgang og udgang - Google Patents

Overfladeboelge-interdigitaltransducer og overflade-boelge-filter med symmetrisk eller forudbestemt assymmetrisk overfoeringskarakteristik mellem indgang og udgang Download PDF

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Publication number
DK46591A
DK46591A DK046591A DK46591A DK46591A DK 46591 A DK46591 A DK 46591A DK 046591 A DK046591 A DK 046591A DK 46591 A DK46591 A DK 46591A DK 46591 A DK46591 A DK 46591A
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DK
Denmark
Prior art keywords
surface wave
assymmetric
preserved
symmetric
input
Prior art date
Application number
DK046591A
Other languages
English (en)
Other versions
DK46591D0 (da
Inventor
Kimon Anemogiannis
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 DK46591D0 publication Critical patent/DK46591D0/da
Publication of DK46591A publication Critical patent/DK46591A/da

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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
    • H03H9/02535—Details of surface acoustic wave devices
    • H03H9/02818—Means for compensation or elimination of undesirable effects
    • H03H9/02842—Means for compensation or elimination of undesirable effects of reflections
    • 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

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  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
DK046591A 1988-09-28 1991-03-15 Overfladeboelge-interdigitaltransducer og overflade-boelge-filter med symmetrisk eller forudbestemt assymmetrisk overfoeringskarakteristik mellem indgang og udgang DK46591A (da)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3832944A DE3832944A1 (de) 1988-09-28 1988-09-28 Oberflaechenwellen-interdigitalwandler und oberflaechenwellen-filter mit symmetrischer oder vorgebbar unsymmetrischer uebertragungscharakteristik zwischen eingang und ausgang
PCT/DE1989/000552 WO1990003692A1 (de) 1988-09-28 1989-08-23 Oberflächenwellen-interdigitalwandler und oberflächenwellen-filter mit symmetrischer oder vorgebbar unsymmetrischer übertragungscharakteristik zwischen eingang und ausgang

Publications (2)

Publication Number Publication Date
DK46591D0 DK46591D0 (da) 1991-03-15
DK46591A true DK46591A (da) 1991-03-15

Family

ID=6363896

Family Applications (1)

Application Number Title Priority Date Filing Date
DK046591A DK46591A (da) 1988-09-28 1991-03-15 Overfladeboelge-interdigitaltransducer og overflade-boelge-filter med symmetrisk eller forudbestemt assymmetrisk overfoeringskarakteristik mellem indgang og udgang

Country Status (9)

Country Link
EP (1) EP0436565B1 (da)
JP (1) JP3172523B2 (da)
DE (2) DE3832944A1 (da)
DK (1) DK46591A (da)
ES (1) ES2015483A6 (da)
GR (1) GR890100593A (da)
PT (1) PT91821B (da)
WO (1) WO1990003692A1 (da)
ZA (1) ZA897341B (da)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4018784A1 (de) * 1990-06-12 1991-12-19 Siemens Ag Oberflaechenwellen-reflektorfilter
DE4212517C2 (de) * 1992-04-14 1995-02-23 Siemens Ag Oberflächenwellenanordnung mit mindestens zwei in Richtung der Hauptwellenausbreitung benachbarten Oberflächenwellen-Strukturen
JP3341709B2 (ja) * 1998-06-01 2002-11-05 株式会社村田製作所 表面波装置及びそれを用いた通信装置

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5320840A (en) * 1976-08-11 1978-02-25 Hitachi Ltd Acoustic surface wave device
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
JPS58156211A (ja) * 1982-03-11 1983-09-17 Nec Corp 弾性表面波共振器型フイルタ

Also Published As

Publication number Publication date
EP0436565A1 (de) 1991-07-17
JP3172523B2 (ja) 2001-06-04
PT91821B (pt) 1995-08-09
ZA897341B (en) 1990-06-27
WO1990003692A1 (de) 1990-04-05
ES2015483A6 (es) 1990-08-16
JPH03502867A (ja) 1991-06-27
DK46591D0 (da) 1991-03-15
DE58903755D1 (de) 1993-04-15
DE3832944A1 (de) 1990-04-05
EP0436565B1 (de) 1993-03-10
PT91821A (pt) 1990-03-30
GR890100593A (el) 1990-10-31

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Legal Events

Date Code Title Description
AHB Application shelved due to non-payment