HK17194A - Apparatus for suppression of spurious attenuation poles in crystal filters - Google Patents

Apparatus for suppression of spurious attenuation poles in crystal filters

Info

Publication number
HK17194A
HK17194A HK171/94A HK17194A HK17194A HK 17194 A HK17194 A HK 17194A HK 171/94 A HK171/94 A HK 171/94A HK 17194 A HK17194 A HK 17194A HK 17194 A HK17194 A HK 17194A
Authority
HK
Hong Kong
Prior art keywords
suppression
attenuation poles
crystal filters
spurious attenuation
spurious
Prior art date
Application number
HK171/94A
Inventor
Robert J Higgins Jr
Original Assignee
Motorola Inc
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
Priority claimed from US06/488,874 external-priority patent/US4533885A/en
Application filed by Motorola Inc filed Critical Motorola Inc
Publication of HK17194A publication Critical patent/HK17194A/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
    • H03H9/46—Filters
    • H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
    • H03H9/56—Monolithic crystal filters

Landscapes

  • Chemical & Material Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Crystals, And After-Treatments Of Crystals (AREA)
  • Steroid Compounds (AREA)
  • Fats And Perfumes (AREA)
HK171/94A 1983-04-27 1994-03-03 Apparatus for suppression of spurious attenuation poles in crystal filters HK17194A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US06/488,874 US4533885A (en) 1983-04-27 1983-04-27 Apparatus for suppression of spurious attenuation poles in crystal filters
PCT/US1984/000565 WO1984004434A1 (en) 1983-04-27 1984-04-12 Apparatus for suppression of spurious attenuation poles in crystal filters

Publications (1)

Publication Number Publication Date
HK17194A true HK17194A (en) 1994-03-11

Family

ID=26770235

Family Applications (1)

Application Number Title Priority Date Filing Date
HK171/94A HK17194A (en) 1983-04-27 1994-03-03 Apparatus for suppression of spurious attenuation poles in crystal filters

Country Status (2)

Country Link
HK (1) HK17194A (en)
NO (1) NO170378C (en)

Also Published As

Publication number Publication date
NO170378C (en) 1992-10-07
NO844688L (en) 1984-11-26
NO170378B (en) 1992-06-29

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Legal Events

Date Code Title Description
PC Patent ceased (i.e. patent has lapsed due to the failure to pay the renewal fee)