BR8001429A - Filtro de onda - Google Patents

Filtro de onda

Info

Publication number
BR8001429A
BR8001429A BR8001429A BR8001429A BR8001429A BR 8001429 A BR8001429 A BR 8001429A BR 8001429 A BR8001429 A BR 8001429A BR 8001429 A BR8001429 A BR 8001429A BR 8001429 A BR8001429 A BR 8001429A
Authority
BR
Brazil
Prior art keywords
digital
center frequency
frequency
structures
wave filter
Prior art date
Application number
BR8001429A
Other languages
English (en)
Inventor
H Eschler
W Bulst
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 BR8001429A publication Critical patent/BR8001429A/pt

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
    • H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
    • H03H9/14514—Broad band transducers
    • 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
    • H03H9/14502—Surface acoustic wave [SAW] transducers for a particular purpose
    • H03H9/14505—Unidirectional SAW transducers

Landscapes

  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Surface Acoustic Wave Elements And Circuit Networks Thereof (AREA)
  • Control Of Motors That Do Not Use Commutators (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
  • Thermistors And Varistors (AREA)
  • Oscillators With Electromechanical Resonators (AREA)
BR8001429A 1979-03-12 1980-03-11 Filtro de onda BR8001429A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE2909705A DE2909705C2 (de) 1979-03-12 1979-03-12 Akustische Oberflächenwellenanordnung

Publications (1)

Publication Number Publication Date
BR8001429A true BR8001429A (pt) 1980-11-11

Family

ID=6065190

Family Applications (1)

Application Number Title Priority Date Filing Date
BR8001429A BR8001429A (pt) 1979-03-12 1980-03-11 Filtro de onda

Country Status (11)

Country Link
US (1) US4325037A (pt)
EP (1) EP0016979B1 (pt)
JP (2) JPS55130219A (pt)
AT (1) ATE4077T1 (pt)
BR (1) BR8001429A (pt)
CA (1) CA1137183A (pt)
DE (1) DE2909705C2 (pt)
ES (1) ES489418A1 (pt)
HU (1) HU181685B (pt)
SU (1) SU1346060A3 (pt)
YU (1) YU67080A (pt)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3438246A1 (de) * 1984-10-18 1986-04-24 Siemens AG, 1000 Berlin und 8000 München Akustisches wellenfilter
NO855284L (no) * 1985-01-18 1986-07-21 Siemens Ag Filter som arbeider med akustiske boelger.
NO855285L (no) * 1985-01-22 1986-07-23 Siemens Ag Filter som arbeider med akustiske boelger.
JPH0646692B2 (ja) * 1986-01-10 1994-06-15 株式会社日立製作所 弾性表面波共振子
US4731595A (en) * 1986-01-24 1988-03-15 Rf Monolithics, Inc. Resonator structure
DE19638627B4 (de) * 1996-09-20 2007-09-27 Epcos Ag Oberflächenwellen(OFW)-Filter

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3582838A (en) * 1966-09-27 1971-06-01 Zenith Radio Corp Surface wave devices
US3550045A (en) * 1969-06-25 1970-12-22 Zenith Radio Corp Acoustic surface wave filter devices
GB1328343A (en) * 1969-09-17 1973-08-30 Mullard Ltd Electro mechanical filters
DE2132985C3 (de) * 1971-07-02 1981-06-04 Siemens AG, 1000 Berlin und 8000 München Piezoelektrisches Filter nach dem Oberflächenwellenprinzip
US3987376A (en) * 1974-03-22 1976-10-19 Hazeltine Corporation Acoustic surface wave device with harmonic coupled transducers
GB1529941A (en) * 1975-01-15 1978-10-25 Mullard Ltd Electrical filters including coupled resonators
DE2610183A1 (de) * 1975-03-12 1976-09-23 Murata Manufacturing Co Wellenfilter mit akustischer oberflaechenleitung
DE2615719A1 (de) * 1976-04-09 1977-10-27 Siemens Ag Filter nach dem oberflaechenwellenprinzip

Also Published As

Publication number Publication date
JPS55130219A (en) 1980-10-08
EP0016979B1 (de) 1983-07-06
DE2909705C2 (de) 1984-09-06
DE2909705A1 (de) 1980-09-18
SU1346060A3 (ru) 1987-10-15
US4325037A (en) 1982-04-13
JPH026670Y2 (pt) 1990-02-19
YU67080A (en) 1983-06-30
ATE4077T1 (de) 1983-07-15
ES489418A1 (es) 1980-09-16
JPS6312931U (pt) 1988-01-28
EP0016979A1 (de) 1980-10-15
HU181685B (en) 1983-11-28
CA1137183A (en) 1982-12-07

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