Patent ID: 7936309

Claim:
An antenna for reception of circularly polarized satellite radio signals, comprising: a) a multi-dimensional antenna conductor structure; b) at least one antenna output connector, connected to said multi-dimensional antenna conductor structure; wherein said multi-dimensional antenna conductor structure comprises a plurality of antenna conductor sections, which, with reference to a spatial reference point common to said antenna conductor sections, are disposed in pairs, symmetrically and extending in the same direction, and wherein said 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 a set of individual pairs of said plurality of antenna conductor sections, and the arithmetical average of the current phases of these antenna currents, counted in the same direction, in each case, in said plurality of antenna conductor sections of each pair, has at least approximately a same value for essentially all the pairs of antenna conductor sections, with reference to a common phase reference point; at least one antenna connection point, and at least one loop antenna wherein said plurality of antenna conductor sections are electrically connected into said at least one loop antenna forming at least one conductor loop, as a multi-dimensional antenna conductor structure, essentially disposed in a horizontal plane, wherein said at least one antenna connection point of said loop antenna is formed by at least one interruption of said conductor loop; a substantially horizontal electrically conductive ground plane, wherein said at least one loop antenna is disposed parallel to said ground plane, and wherein the antenna further comprises an electrically short, vertical monopole that is disposed at a phase reference point of said at least one loop antenna, and wherein said at least one antenna connection point comprises at least one antenna connection point for a monopole and an antenna connection point for said at least one loop antenna, and wherein the antenna further comprises an adaptation and phase-shift network, coupled to said at least one antenna output connector and wherein said at least one antenna connection point is coupled to said antenna output connector via said adaptation and phase-shift network, and wherein said adaptation and phase-shift network is configured in such a manner that during reciprocal operation of the antenna as a transmission antenna, it adapts the phases of the currents at said antenna connection points of said vertical monopole and of said at least one loop antenna to one another.