Planar antenna with patch radiators

Details Planar antenna with patch radiators Planar antenna with patch radiators

H - Electricity

01

Q

351/29

H01Q 21/06 (2006.01) H01Q 1/38 (2006.01) H01Q 9/04 (2006.01) H01Q 21/00 (2006.01)

Patent

CA 1261060

Abstract of the Disclosure A planar antenna includes a first slotted waveguide serving as a power-feed unit, and a second slotted wave- guide of planar type coupled with the power-feed wave- guide, for radiating circularly polarized microwaves into space. The second waveguide has a metal plate in which a two-dimensional slot array consisting of a plu- rality of rows of slots is formed. An insulative layer is provided on the second waveguide to cover the slot array. A plurality of rows of metal patch radiators are provided on the insulative layer. These patch radiators are electromagnetically coupled with the slots, respec- tively, in such a manner that each radiator is directly excited by the corresponding slot through the insulative layer, thereby radiating circularly polarized micro- waves.

514191

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