Global Patent Index - EP 1004149 A1

EP 1004149 A1 2000-05-31 - WAVEGUIDE FILTER

Title (en)

WAVEGUIDE FILTER

Title (de)

HOHLLEITERFILTER

Title (fr)

FILTRE A GUIDES D'ONDES

Publication

EP 1004149 A1 (DE)

Application

EP 98947357 A

Priority

  • DE 9802133 W
  • DE 19736367 A

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 (main, further and additional classification)

H01P 1/211

IPC 8 full level (invention and additional information)

H01P 1/211 (2006.01)

CPC (invention and additional information)

H01P 1/211 (2013.01)

Citation (search report)

See references of WO 9910947A1

Designated contracting state (EPC)

DE FR GB IT

DOCDB simple family

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