US 8,283,998 B2Granted

Antenna feed device

AssigneeTelefonaktiebolaget LM Ericsson (publ)

InventorsUwe Rosenberg, Ulrich Mahr, Jurgen Ebinger

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Abstract

An antenna feed device (100) having a first waveguide (102) and a second waveguide (104) separated from the first waveguide (102), each of which is assigned to feed one polarization of a dedicated antenna and each of said waveguides exhibit an overall L-shape form where at least one section of the L-shape of each waveguide is in parallel to the other, both having respectively a first (106) and a second (108) antenna end ending in one plane for connection to an ortho-mode transducer associated with the antenna, while the other sections of the two L-shape waveguides extend in opposite directions, having respectively a first (110) and a second (112) radio end, each of which ends with a single waveguide port for connection to a radio equipment and the waveguides arrangement yields an overall compact T-shape interconnection of the antenna and the radios dedicated to the orthogonal polarizations.

Claims8

Dependent claims

An antenna feed device comprising:

a first waveguide assigned to feed a signal having a first polarization to a dedicated antenna;
a second waveguide separated from the first waveguide, and assigned to feed a signal having a second polarization to the antenna;
each of the first and second waveguides having substantially an overall L-shape in which at least one section of each L-shaped waveguide is parallel to at least one section of the other L-shaped waveguide, and each L-shaped waveguide comprising:
an antenna end terminating in a first plane at one end of the first and second waveguides, and configured to connect the first and second waveguides to an ortho-mode transducer;
and
a radio end disposed at opposite ends of the first and second waveguides, each radio end terminating at a corresponding single waveguide port disposed on opposing sidewalls of the antenna feed device and configured to connect to respective radio equipment comprising first and second radio units;
and
the first and second waveguides being formed to connect the antenna and the radio equipment in a substantially compact T-shape interconnection configuration.

5 more elements

Dependencies are inferred from the claim text.