| http://www.w3.org/ns/prov#value | - o antennas of single polarization are required. [0005] What is needed, then, is a low-cost, simple to manufacture and compact antenna having a high aperture efficiency, and which does not require a complex feed network, and which may be readily adapted for transmitting and/or receiving either linearly polarized or circularly polarized beams of single or dual polarization.
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