Communications: radio wave antennas – Antennas – Wave guide type
Patent
1986-04-11
1988-07-26
Wise, Robert E.
Communications: radio wave antennas
Antennas
Wave guide type
343789, 343791, H01Q 1300
Patent
active
047604034
ABSTRACT:
A polarized signal receiver waveguide assembly, or feedhorn, for receiving a selected one of linearly polarized electromagnetic signals in one waveguide of circular cross-section and for launching or transmitting the selected signal into a second waveguide, the axes of the waveguides being disposed at right angle. The first waveguide has a closed end wall, formed as a hemispherical cavity having a hemispherical concave surface. A probe comprising a signal receiver portion disposed in a plane perpendicular to the axis of the first waveguide and a launch or re-transmitter portion having its axis perpendicular to the axis of the second waveguide has its launch or transmitter portion mounted in a controllably rotatable dielectric rod, such that rotation of the rod causes rotation of the signal receiver portion for alignment with a selected one of the polarized signals. The transmission line between the probe signal receiver portion and launch or re-transmitter portion consists of a pair of bifurcated curvilinear branches forming a rectangle disposed along the axis of the first waveguide and having sides bent at an angle in the form of angled and tapered winglets, rearwardly converging.
REFERENCES:
patent: 4528528 (1985-07-01), Augustin
Le Hoang-anh
Wise Robert E.
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