H - Electricity – 01 – Q
Patent
H - Electricity
01
Q
H01Q 13/08 (2006.01) H01Q 13/10 (2006.01) H01Q 21/00 (2006.01) H01Q 21/06 (2006.01)
Patent
CA 2310690
A slot antenna 110 has an array of slot pairs where the E-plane beamwidth of the transmitted energy can be controlled. The antenna includes at least one pair of slots 118, 120 which are fed by a microstrip 122, and electric field barriers 140, 142, 144 positioned between and parallel to the slots 118, 120. The electric field barners extend between the front 110 and rear 112 panels of the slot antenna 100. The distance between the electric field barriers is used to adjust or tune the antenna to a particular transmit or receive frequency, and the distance between the slots is used to control the E-plane beamwidth of the transmitted energy. When the slots are placed closer together, the beamwidth becomes wider, and when the slots are moved further apart, the beamwidth becomes narrower. In one embodiment, the electric field barrier is a series of closely spaced conductors 132, and in another embodiment, the electric field barrier is a conductive strip.
Rulf Benjamin
Tsai Ming-Ju
Kirby Eades Gale Baker
Lucent Technologies Inc.
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