EP 0022401 B1 19840919 - BROAD-BAND POLARISER WITH LOW ELLIPTICITY-RATIO AND MICROWAVE EQUIPMENT WITH THE SAME
Title (en)
BROAD-BAND POLARISER WITH LOW ELLIPTICITY-RATIO AND MICROWAVE EQUIPMENT WITH THE SAME
Publication
Application
Priority
FR 7917847 A 19790710
Abstract (en)
[origin: US4305051A] The polarizer with a circular waveguide in the inner wall of which are formed identical circular corrugations positioned in a plane perpendicular to the longitudinal axis XX of the guide. The corrugations have four quadrants: a first pair of quadrants opposed by the apex in which the depth of the corrugations is less than in the second pair. By positioning the waveguide in such a way that the incident field E is parallel to the limit between two adjacent quadrants, the phase velocity of the orthogonal components C1, C2 of field E is dependent respectively on the admittance of the quadrants of the first pair and the quadrants of the second pair. This leads to a phase difference at the polarizer outlet and the corrugations are defined so that this difference is substantially 90 DEG .
IPC 1-7
IPC 8 full level
H01P 1/17 (2006.01)
CPC (source: EP US)
H01P 1/171 (2013.01 - EP US)
Citation (examination)
GB 1365484 A 19740904 - PLESSEY CO LTD
Designated contracting state (EPC)
BE CH LI NL
DOCDB simple family (publication)
EP 0022401 A1 19810114; EP 0022401 B1 19840919; FR 2461370 A1 19810130; FR 2461370 B1 19830819; JP S5616301 A 19810217; US 4305051 A 19811208
DOCDB simple family (application)
EP 80400970 A 19800627; FR 7917847 A 19790710; JP 9257080 A 19800707; US 16668280 A 19800707