Electromagnetically coupled printed-circuit antennas having...

Details Electromagnetically coupled printed-circuit antennas having... Electromagnetically coupled printed-circuit antennas having...

H - Electricity

01

Q

356/1, 26/112, 3

H01Q 9/04 (2006.01) H01Q 13/08 (2006.01) H01Q 21/06 (2006.01)

Patent

CA 1293563

ABSTRACT OF THE DISCLOSURE A printed-circuit antenna array having broadband linear polarization, and circular polarization with high polarization purity, feedlines of the array being capacitively coupled to feeding elements at a single feedpoint or at multiple feedpoints, the feeding elements in turn being electromagnetically coupled to corresponding radiating elements. The radiating elements may be patches, disposed on a dielectric board which is contactlessly coupled to another board con- taining the feeding elements, in accordance with a first embodiment of the invention. Alternatively, the radiating elements may be slots, formed by an absence of material in ground planes which are formed on the same dielectric board as the feeding elements. Still further, both radiating patches and radiating slots may be used. The exclusively contactless coupling enables simple, inexpensive multilayer manufacture.

549861

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