ZA897341B - Surface-wave interdigital transducer and surface-wave filter having symmetrical or definable asymmetrical transfer characteristic between input and output - Google Patents

Surface-wave interdigital transducer and surface-wave filter having symmetrical or definable asymmetrical transfer characteristic between input and output

Info

Publication number
ZA897341B
ZA897341B ZA897341A ZA897341A ZA897341B ZA 897341 B ZA897341 B ZA 897341B ZA 897341 A ZA897341 A ZA 897341A ZA 897341 A ZA897341 A ZA 897341A ZA 897341 B ZA897341 B ZA 897341B
Authority
ZA
South Africa
Prior art keywords
wave
definable
symmetrical
input
output
Prior art date
Application number
ZA897341A
Inventor
Kimon Anemogiannis
Anemogiannis Kimon
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 ZA897341B publication Critical patent/ZA897341B/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)
ZA897341A 1988-09-28 1989-09-27 Surface-wave interdigital transducer and surface-wave filter having symmetrical or definable asymmetrical transfer characteristic between input and output ZA897341B (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
ZA897341B true ZA897341B (en) 1990-06-27

Family

ID=6363896

Family Applications (1)

Application Number Title Priority Date Filing Date
ZA897341A ZA897341B (en) 1988-09-28 1989-09-27 Surface-wave interdigital transducer and surface-wave filter having symmetrical or definable asymmetrical transfer characteristic 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
DE3832944A1 (en) 1990-04-05
EP0436565B1 (en) 1993-03-10
DE58903755D1 (en) 1993-04-15
WO1990003692A1 (en) 1990-04-05
JP3172523B2 (en) 2001-06-04
PT91821B (en) 1995-08-09
JPH03502867A (en) 1991-06-27
ES2015483A6 (en) 1990-08-16
EP0436565A1 (en) 1991-07-17
DK46591A (en) 1991-03-15
GR890100593A (en) 1990-10-31
PT91821A (en) 1990-03-30
DK46591D0 (en) 1991-03-15

Similar Documents

Publication Publication Date Title
EP0210843A3 (en) Pressure transducers and methods of converting a variable pressure input
DE69028261D1 (en) Optimized input and output buffers
DE3475029D1 (en) Direct seal between niobium and ceramics
GB2125212B (en) Piezoelectric pressure and/or temperature transducer
AU3785789A (en) Filter element and manufacture method thereof
KR900702646A (en) Adaptive digital filter including non-recursive and recursive
AU2099488A (en) Flexible filter bag and method of fabrication
GB2170621B (en) Solid state current-to-pressure and current-to-motion transducer
DK167989A (en) Electronic resonator and application of the resonator
EP0465213A3 (en) Input and output scanner
GB2264408B (en) Boosting-clamping circuit and output buffer circuit using the same
EP0179978A3 (en) Stacked type piezo-electric device and method of its use
AU4954985A (en) Use of granular starch to remove fat and or protein from starch hydrolysate syrups
ZA897341B (en) Surface-wave interdigital transducer and surface-wave filter having symmetrical or definable asymmetrical transfer characteristic between input and output
GB2173637B (en) Piezoelectric transducer and piezoelectric transducer element therefor
GB2178536B (en) At-cut crystal resonator pressure transducer
EP0459631A3 (en) At-cut crystal oscillating element and method of making the same
EP0423986A3 (en) Input/output communication between autochanger and drive
AU5169193A (en) Interrupt request signal noise filter and negative pulse extension circuit
EP0464205A4 (en) Input/output device and method thereof
AU581839B2 (en) Multistage fluid filter and method
EP0338091A4 (en) Light-receiving element and method of operating the same
GB8413884D0 (en) Carrying out value input and output operations
GB2223329B (en) An interdigital electrode for surface wave device and method of fabricating the same
AU7854491A (en) Tetrazole urea and thiourea acat inhibitors