Importance

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Abstract

There is disclosed an antenna for reception of circularly polarized satellite radio signals. The antenna comprises at least one two-dimensional or three-dimensional antenna conductor structure connected with an antenna output connector. The multi-dimensional antenna conductor structure is configured so that it comprises a plurality of antenna conductor sections, which, with reference to a spatial reference point (z) common to the antenna conductor sections, are disposed in pairs, symmetrically and extending in the same direction. The multi-dimensional antenna conductor structure is furthermore configured so that during reciprocal operation of the antenna as a transmission antenna, antenna currents having at least approximately the same size flow in the individual pairs of antenna conductor sections, and the arithmetical average of the current phases of these antenna currents, counted in the same direction, in each instance, in the antenna conductor sections of each pair, has at least approximately the same value in the case of essentially all the pairs of antenna conductor sections, with reference to a common phase reference point (B), during reciprocal operation of the antenna as a transmission antenna. Such an antenna receives left-rotating circularly polarized waves and right-rotating circularly polarized waves equally. The vertical radiation diagram can be filled up towards low elevation angles by means of a vertical, electrically short monopole disposed at the phase reference point (B), whose reception signal is superimposed on that of the antenna conductor structure.

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First Claim