Multimode horn antenna

Details Multimode horn antenna Multimode horn antenna

H - Electricity

01

Q

351/30

H01Q 13/02 (2006.01) H01Q 13/00 (2006.01) H01Q 25/04 (2006.01)

Patent

CA 1046631

MULTIMODE HORN ANTENNA Abstract of the Disclosure A horn antenna is described including a funnel- shaped coupler with a port at the narrow end of the coupler adapted to excite a symmetrical waveguide mode in the coupler and a plurality of side wall input ports adapted to excite at least two difference waveguide modes. The port at the narrow end of the coupler is coupled by a first step to a smaller diameter cylindrical section capable of propagating the dominant symmetrical mode. A larger diameter cylindrical section is coupled to the larger end of the coupler by a second step. A ring divides the larger diameter cylindrical section into two parts. The first and second steps and the dimensioning and placement of the ring are arranged so that the two difference mode radiation patterns have essentially the same combined beam width or pattern envelope as the symmetrical mode radiation pattern. - 1 -

229771

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