BR7908348A - Estrutura de filtro a cristal, do tipo polilitico - Google Patents

Estrutura de filtro a cristal, do tipo polilitico

Info

Publication number
BR7908348A
BR7908348A BR7908349A BR7908348A BR7908348A BR 7908348 A BR7908348 A BR 7908348A BR 7908349 A BR7908349 A BR 7908349A BR 7908348 A BR7908348 A BR 7908348A BR 7908348 A BR7908348 A BR 7908348A
Authority
BR
Brazil
Prior art keywords
polylitic
type
crystal filter
crystal
filter
Prior art date
Application number
BR7908349A
Other languages
English (en)
Inventor
H Augst
Original Assignee
Ericsson Telefon Ab L M
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 Ericsson Telefon Ab L M filed Critical Ericsson Telefon Ab L M
Publication of BR7908348A publication Critical patent/BR7908348A/pt

Links

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
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/58—Multiple crystal filters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Piezo-Electric Or Mechanical Vibrators, Or Delay Or Filter Circuits (AREA)
BR7908349A 1978-12-20 1979-12-19 Estrutura de filtro a cristal, do tipo polilitico BR7908348A (pt)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE7813107A SE415428B (sv) 1978-12-20 1978-12-20 Kristallfilterstruktur

Publications (1)

Publication Number Publication Date
BR7908348A true BR7908348A (pt) 1980-09-16

Family

ID=20336654

Family Applications (1)

Application Number Title Priority Date Filing Date
BR7908349A BR7908348A (pt) 1978-12-20 1979-12-19 Estrutura de filtro a cristal, do tipo polilitico

Country Status (4)

Country Link
US (1) US4297659A (pt)
BR (1) BR7908348A (pt)
IT (1) IT7928193A0 (pt)
SE (1) SE415428B (pt)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4484158A (en) * 1982-07-07 1984-11-20 General Electric Company Monolithic crystal filter and method of manufacturing same
MX2011000055A (es) * 2008-06-30 2011-07-28 Mathena Inc Sistema de contencion de lodo-gas ecologicamente sensible.
US8784545B2 (en) 2011-04-12 2014-07-22 Mathena, Inc. Shale-gas separating and cleanout system
US9353586B2 (en) 2012-05-11 2016-05-31 Mathena, Inc. Control panel, and digital display units and sensors therefor
USD719519S1 (en) 2013-03-08 2014-12-16 Mathena, Inc. Drive over cable cover segment
USD714175S1 (en) 2013-05-03 2014-09-30 Mathena, Inc. Portion of digital gauge
USD714174S1 (en) 2013-05-03 2014-09-30 Mathena, Inc. Portion of digital gauge
USD763414S1 (en) 2013-12-10 2016-08-09 Mathena, Inc. Fluid line drive-over

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3209178A (en) * 1965-09-28 Fig.ii
GB1153673A (en) * 1967-01-18 1969-05-29 Mullard Ltd Improvements in or relating to Electrical Discharge Display Devices
US3723920A (en) * 1971-06-24 1973-03-27 Gte Automatic Electric Lab Inc Crystal filter assembly

Also Published As

Publication number Publication date
IT7928193A0 (it) 1979-12-19
SE7813107L (sv) 1980-06-21
SE415428B (sv) 1980-09-29
US4297659A (en) 1981-10-27

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