Horn antenna with a choke surface-wave structure on the...

Details Horn antenna with a choke surface-wave structure on the... Horn antenna with a choke surface-wave structure on the...

H - Electricity

01

Q

351/28, 351/30

H01Q 13/02 (2006.01) H01Q 19/13 (2006.01)

Patent

CA 1262773

Abstract of the Disclosure A horn antenna for radiating or receiving a microwave is provided with a plurality of axially spaced radial fins fixedly mounted on the outer surface of the horn, which fins form a plurality of radial groove and a front axial groove each having a depth of approximately equal to a quarter of A wavelength of the microwave. Those fins and grooves form a choke surface-wave structure which improves the radiation pattern and reduces undesired radiation and side lobe. A multimode horn arrangement for a higher frequency wave is employed for with horn so that two different frequency waves are efficiently radiated or received at a single horn antenna with a reduced side lobe and an excellent cross polarization characteristic.

526284

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