EP 0153541 B1 19890920 - CIRCULAR WINDOW FOR A MICROWAVE WAVEGUIDE
Title (en)
CIRCULAR WINDOW FOR A MICROWAVE WAVEGUIDE
Publication
Application
Priority
FR 8400664 A 19840117
Abstract (en)
[origin: US4684908A] The present invention relates to a circular window for an ultra-high frequency waveguide. This window is constituted by a circular plate or wafer made from a dielectric material mounted in a waveguide section, connected on either side of a waveguide operating in a frequency band centered around the central frequency. The diameter of the circular plate is chosen so as to reject the ghost modes outside the frequency band. The length of the circular guide section is chosen so that the reactance of the assembly constituted by the plate and the circular guide is cancelled out for the central frequency. It also comprises a half-wave impedance transformer, whose height is chosen so as to bring about the matching in the operating frequency band. The window associated with rectangular waveguides is more particularly used with tubes for telecommunications.
IPC 1-7
IPC 8 full level
H01J 23/36 (2006.01); H01P 1/08 (2006.01); H01P 1/16 (2006.01)
CPC (source: EP US)
H01J 23/36 (2013.01 - EP US); H01P 1/08 (2013.01 - EP US)
Designated contracting state (EPC)
DE GB IT NL
DOCDB simple family (publication)
FR 2558306 A1 19850719; FR 2558306 B1 19880122; CA 1236179 A 19880503; DE 3479847 D1 19891026; EP 0153541 A1 19850904; EP 0153541 B1 19890920; JP H0810801 B2 19960131; JP S60162301 A 19850824; US 4684908 A 19870804
DOCDB simple family (application)
FR 8400664 A 19840117; CA 472058 A 19850114; DE 3479847 T 19841227; EP 84402742 A 19841227; JP 563085 A 19850116; US 68998585 A 19850109