Antenna feeding with selectively controlled polarization

Details Antenna feeding with selectively controlled polarization Antenna feeding with selectively controlled polarization

H - Electricity

01

Q

351/57

H01Q 15/24 (2006.01) H01Q 13/06 (2006.01) H01Q 21/24 (2006.01)

Patent

CA 1197613

ABSTRACT OF THE DISCLOSURE A flat face annular grooved metal surface sur- rounds a circular waveguide opening coupled to a small dipole radiator which excites the circular waveguide in its fundamental propagating mode (TE11). The dipole is arranged to rotate about its axis by means of an ex- tension of its inner conductor, which forms a simple probe in a section of rectangular waveguide situated behind the circular waveguide. A dielectric shaft is fastened to the inner conductor and is brought to the outside of the rectangular waveguide where it is con- nected to a small motor. The motor is arranged so that it may be actuated remotely by any of several circuits. The dipole may be before the corrugated plate with bent arms. A pair of dipoles may be arranged perpendicular to each other with two separate coaxial connector antenna feed outputs for direct attachment to coaxial-type low- noise amplifiers.

429307

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