H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 13/00 (2006.01) H01Q 3/20 (2006.01) H01Q 9/04 (2006.01) H01Q 19/10 (2006.01)
Patent
CA 2331978
A patch antenna is described with enhanced beamwidth characteristics. In a first embodiment, the antenna comprises a patch element and a ground plane separated from the patch element by a first dielectric layer. The antenna further includes a signal feed line separated from the ground plane by a second dielectric layer, the signal feed line being shielded from the patch element by the ground plane. The signal feed line is electromagnetically coupled to the patch element through an aperture in the ground plane lying across the signal feed line, the ground plane functioning as a finite surface relative to the aperture. According to a further aspect of the invention, the beamwidth of the antenna is adjusted by adjusting the position of a reflector behind the signal feed line. Thus, the present invention provides an efficient way to achieve adjustable wide- beamwidth for various wireless systems in a three-sector configuration.
Chang Li-Chung
Housel James A.
Tsai Ming-Ju
Kirby Eades Gale Baker
Lucent Technologies Inc.
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