Global Patent Index - EP 1004149 B1

EP 1004149 B1 20011121 - WAVEGUIDE FILTER

Title (en)

WAVEGUIDE FILTER

Title (de)

HOHLLEITERFILTER

Title (fr)

FILTRE A GUIDES D'ONDES

Publication

EP 1004149 B1 20011121 (DE)

Application

EP 98947357 A 19980728

Priority

  • DE 9802133 W 19980728
  • DE 19736367 A 19970821

Abstract (en)

[origin: DE19736367A1] The waveguide filter includes input and output step transformer area (1,3) and an area with waveguide sections which alternate in the height. A band stop filter (4,5) is integrated in the transformer areas in form of at least two consecutive stop members. (41,42,43,51,52,53). An Independent claim is included for application of the waveguide filter as low-pass filter in a transmission branch of a HF power amplifier, especially traveling wave tube amplifier for satellite.

IPC 1-7

H01P 1/211

IPC 8 full level

H01P 1/211 (2006.01)

CPC (source: EP US)

H01P 1/211 (2013.01 - EP US)

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family (publication)

DE 19736367 A1 19990225; CA 2300937 A1 19990304; CA 2300937 C 20040511; DE 59802752 D1 20020221; EP 1004149 A1 20000531; EP 1004149 B1 20011121; US 6285267 B1 20010904; WO 9910947 A1 19990304

DOCDB simple family (application)

DE 19736367 A 19970821; CA 2300937 A 19980728; DE 59802752 T 19980728; DE 9802133 W 19980728; EP 98947357 A 19980728; US 48617900 A 20000615