Global Patent Index - EP 0757400 B1

EP 0757400 B1 20031029 - Microwave polariser

Title (en)

Microwave polariser

Title (de)


Title (fr)

Polariseur à micro-ondes


EP 0757400 B1 20031029 (EN)


EP 96111886 A 19960724


  • EP 96111886 A 19960724
  • EP 95401826 A 19950803

Abstract (en)

[origin: EP0757400A1] The invention relates to a microwave polariser and in particular to a microwave polariser used in a system for coupling energy between a waveguide (6) and a transmission line (3, 4) or vice versa. Conventional polarisers for circular polarised microwaves use two mutually orthogonal probes (1, 2), which penetrate into the waveguide. These probes are adjusted normally to an input impedance of 50 ohms, which is a function of the penetration depth. In order to improve the cross polarisation of such a polariser the probes are adjusted to an input impedance of less than 50 ohms, in particular to 20 ohms, which results in a smaller penetration depth. This smaller penetration depth increases the distance between the two probes and in turn reduces the cross polarisation. <IMAGE>

IPC 1-7

H01P 1/161

IPC 8 full level

H01P 1/161 (2006.01)

CPC (source: EP)

H01P 1/161 (2013.01)

Designated contracting state (EPC)


DOCDB simple family (publication)

EP 0757400 A1 19970205; EP 0757400 B1 20031029

DOCDB simple family (application)

EP 96111886 A 19960724