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AssigneeChannel Master LLC
InventorsGerard King, Jamie Stokes
Estimating the term…
The present invention relates to antenna feeds (10, 30, 70, 78, 94) for use in linear or circularly polarized systems. In one embodiment of the invention, a cross-type antenna feed (30) comprises a cylindrical metal waveguide housing (12) and a cross-type metal feed body (32) coupled to the front of the waveguide housing (12). The feed body (32) has four peripherally spaced corrugated arm portions (34) arranged in a mutually orthogonal relationship, where the arm portions (34) extend radially outwardly from a longitudinal axis (16) of the feed body (32). Ridges (36) on each arm portion (34) are arranged concentrically around the axis (16) and parallel thereto, with successive ridges spaced from the axis (16) in a tiered arrangement. In another embodiment the antenna feed is a dielectric lens. The antenna feed is used in an antenna system having a reflector antenna in addition or in a low noise block (LNB) receiver.
An antenna feed for use in a system for receiving orthogonal linear or circularly polarized signals, the antenna feed being a cross-type feed and comprising an antenna feed body for coupling to a waveguide housing,
An antenna feed for use in a system for receiving orthogonal linearly or circularly polarised signals, the antenna feed comprising an antenna feed body for coupling to a waveguide housing, the feed body defining a central axis and having a plurality of spaced arm portions extending radially outwardly from the central axis on a respective radius for receiving the polarised signals, each arm portion being corrugated and having at least one element arranged transversely to its respective radius.
Dependencies are inferred from the claim text.