Patent ID: 7187336

Claim:
An antenna comprising: a conductive circular base; a plurality of antenna feeds carried by said base for respective different rotational polarizations; a plurality of inner elongate convex coupler elements carried by said base and connected to respective ones of said plurality of antenna feeds for respective different rotational polarizations; and a plurality of outer elongate convex resonant elements carried by said base and extending outwardly therefrom a distance greater than said plurality of inner elongate convex coupler elements; said plurality of outer elongate convex resonant elements tuned to different resonant frequencies to thereby support the different rotational polarizations; said plurality of outer elongate convex resonant elements comprising a first half-loop antenna element having a first end connected to a peripheral edge of the conductive circular base and a second end capacitively coupled to the peripheral edge of the conductive circular base opposite the first end, and a second half-loop antenna element having a first end connected to the peripheral edge of the conductive circular base and a second end capacitively coupled to the peripheral edge of the conductive circular base opposite the first end, the second half-loop antenna element being orthogonal to the first half-loop antenna element.