DK46591D0 - SURFACE WAVE INTERDIGITAL TRANSDUCERS AND SURFACE WAVE FILTERS WITH SYMMETRIC OR PRESERVED ASSYMMETRIC TRANSFER CHARACTERISTICS BETWEEN INPUT AND OUTPUT - Google Patents

SURFACE WAVE INTERDIGITAL TRANSDUCERS AND SURFACE WAVE FILTERS WITH SYMMETRIC OR PRESERVED ASSYMMETRIC TRANSFER CHARACTERISTICS BETWEEN INPUT AND OUTPUT

Info

Publication number
DK46591D0
DK46591D0 DK91465A DK46591A DK46591D0 DK 46591 D0 DK46591 D0 DK 46591D0 DK 91465 A DK91465 A DK 91465A DK 46591 A DK46591 A DK 46591A DK 46591 D0 DK46591 D0 DK 46591D0
Authority
DK
Denmark
Prior art keywords
surface wave
assymmetric
preserved
symmetric
input
Prior art date
Application number
DK91465A
Other languages
Danish (da)
Other versions
DK46591A (en
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 DK46591A publication Critical patent/DK46591A/en
Publication of DK46591D0 publication Critical patent/DK46591D0/en

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
    • H03H9/02535—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 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)
DK91465A 1988-09-28 1991-03-15 SURFACE WAVE INTERDIGITAL TRANSDUCERS AND SURFACE WAVE FILTERS WITH SYMMETRIC OR PRESERVED ASSYMMETRIC TRANSFER CHARACTERISTICS BETWEEN INPUT AND OUTPUT DK46591D0 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3832944A DE3832944A1 (en) 1988-09-28 1988-09-28 SURFACE WAVE INTERDIGITAL CONVERTER AND SURFACE WAVE FILTER WITH SYMMETRICAL OR PRESETABLE UNSYMMETRIC TRANSMISSION CHARACTERISTICS BETWEEN INPUT AND OUTPUT
PCT/DE1989/000552 WO1990003692A1 (en) 1988-09-28 1989-08-23 Surface wave interdigital transducer and surface wave filter with symmetrical or predetermined asymmetrical transfer characteristic between input and output

Publications (2)

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

Family

ID=6363896

Family Applications (1)

Application Number Title Priority Date Filing Date
DK91465A DK46591D0 (en) 1988-09-28 1991-03-15 SURFACE WAVE INTERDIGITAL TRANSDUCERS AND SURFACE WAVE FILTERS WITH SYMMETRIC OR PRESERVED ASSYMMETRIC TRANSFER CHARACTERISTICS BETWEEN INPUT AND OUTPUT

Country Status (9)

Country Link
EP (1) EP0436565B1 (en)
JP (1) JP3172523B2 (en)
DE (2) DE3832944A1 (en)
DK (1) DK46591D0 (en)
ES (1) ES2015483A6 (en)
GR (1) GR890100593A (en)
PT (1) PT91821B (en)
WO (1) WO1990003692A1 (en)
ZA (1) ZA897341B (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4018784A1 (en) * 1990-06-12 1991-12-19 Siemens Ag Surface wave reflection filter
DE4212517C2 (en) * 1992-04-14 1995-02-23 Siemens Ag Surface wave arrangement with at least two surface wave structures adjacent in the direction of the main wave propagation
JP3341709B2 (en) * 1998-06-01 2002-11-05 株式会社村田製作所 Surface wave device and communication device using the same

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 (en) * 1982-03-11 1983-09-17 Nec Corp Surface acoustic wave resonator type filter

Also Published As

Publication number Publication date
ES2015483A6 (en) 1990-08-16
JPH03502867A (en) 1991-06-27
DE3832944A1 (en) 1990-04-05
PT91821A (en) 1990-03-30
WO1990003692A1 (en) 1990-04-05
DK46591A (en) 1991-03-15
EP0436565B1 (en) 1993-03-10
GR890100593A (en) 1990-10-31
EP0436565A1 (en) 1991-07-17
ZA897341B (en) 1990-06-27
PT91821B (en) 1995-08-09
JP3172523B2 (en) 2001-06-04
DE58903755D1 (en) 1993-04-15

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Legal Events

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