Horn antenna array phase matched over large bandwidths

Details Horn antenna array phase matched over large bandwidths Horn antenna array phase matched over large bandwidths

H - Electricity

01

Q

351/30

H01Q 13/02 (2006.01) H01Q 21/08 (2006.01)

Patent

CA 1279926

HORN ANTENNA ARRAY PHASE MATCHED OVER LARGE BANDWIDTHS ABSTRACT OF THE DISCLOSURE An array of horn antennas with non-uniform aperture sizes is disclosed wherein the individual horns phase track over a wide frequency band. The horn with the smallest aperture is considered the reference horn, and its length defines the overall horn length of the other horn in the array. The flare lengths of the other horns of the array are less than the length of the reference horn, and lengths of waveguide are added to the other horns such that the respective combined flare lengths and waveguide lengths of each of the other horns equals the horn length of the reference horn. The respective lengths of the flare and the waveguide section are chosen such that the resultant horn antenna phase tracks the reference horn over the frequency band. Therefore, horn antennas of various aperture sizes, and restricted to a maximum length can be phase matched over a band of frequencies by reduc- ing the flared length of each horn in relation to that of the smallest or reference horn, and making up the result- ing length difference by a waveguide section.

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