Patent ID: 7405700
Filing Date: 2008-07-29
Classification: H01Q

Abstract:
1. An antenna capable of receiving both left-hand circularly polarized (LHCP) signals and right-hand circularly polarized (RHCP) signals, and outputting both signals on a single feed, the antenna comprising: an inner patch; an outer patch substantially coplanar and substantially concentric with the inner patch, a gap defined generally between the inner and outer patches such that the inner and outer patches are separated and do not physically contact each other; a single feed connected to the inner patch, the outer patch not having a feed connected thereto and being parasitically fed; whereby the inner patch is operable, independently from the outer patch, for receiving left hand circularly polarized (LHCP) signals, and the inner and outer patches operable collectively together for receiving right hand circularly polarized (RHCP) signals such that the antenna is operable for outputting two different signals having different frequencies and different polarizations on the single feed.