Global Patent Index - EP 0035929 B1

EP 0035929 B1 19840905 - HIGH FREQUENCY MULTIMODE FEED, AND ANTENNA COMPRISING SUCH A FEED

Title (en)

HIGH FREQUENCY MULTIMODE FEED, AND ANTENNA COMPRISING SUCH A FEED

Publication

EP 0035929 B1 19840905 (FR)

Application

EP 81400312 A 19810227

Priority

FR 8005199 A 19800307

Abstract (en)

[origin: US4357612A] A multimode ultrahigh-frequency source with wide passband comprises a rectangular waveguide with a cavity terminating at an exit aperture in a horizontally flared horn, an input end of the cavity remote from the horn being joined at a transverse discontinuity plane to an upper and a lower pair of symmetrically disposed rectangular supply guides that are vertically separated from each other. An obstruction in the form of a block located between the levels of the supply guides extends from the discontinuity plane forward into the cavity and converges toward the horn in the vertical E-plane, e.g. with a trapezoidal cross-section. With the supply guides excited in the basic TE10 mode, a suitable dimensioning of the block will maintain a cophasal relationship between this basic mode and a hybrid mode EM12, originating at the discontinuity plane, in the exit aperture of the cavity over a wide frequency band.

IPC 1-7

H01Q 25/04; H01Q 19/08; H01P 1/16

IPC 8 full level

H01Q 13/02 (2006.01); H01P 1/16 (2006.01); H01Q 19/08 (2006.01); H01Q 25/04 (2006.01)

CPC (source: EP US)

H01P 1/16 (2013.01 - EP US); H01Q 19/08 (2013.01 - EP US); H01Q 25/04 (2013.01 - EP US)

Citation (examination)

Designated contracting state (EPC)

CH DE GB IT LI NL SE

DOCDB simple family (publication)

EP 0035929 A1 19810916; EP 0035929 B1 19840905; CA 1174760 A 19840918; DE 3165806 D1 19841011; FR 2477785 A1 19810911; FR 2477785 B1 19840224; JP H0337323 B2 19910605; JP S56140703 A 19811104; US 4357612 A 19821102

DOCDB simple family (application)

EP 81400312 A 19810227; CA 372423 A 19810305; DE 3165806 T 19810227; FR 8005199 A 19800307; JP 3305081 A 19810306; US 24089981 A 19810305