Communications: radio wave antennas – Antennas – With grounding structure
Patent
1997-09-19
1999-11-16
Wong, Don
Communications: radio wave antennas
Antennas
With grounding structure
343848, 343700MS, H01Q 148
Patent
active
059866152
ABSTRACT:
An antenna structure has a radiating element and a ground plane. The ground plane has a central region relatively closely spaced apart from the radiating element and a peripheral region extending away from the central region. The peripheral region comprises at least the conductive layer that extends radially beyond the radiating element and provides a sheet resistivity higher than that of the radiating element. Though physically small, the ground plane simulates an infinite ground plane, and the antenna structure reduces multipath signals caused by reflection from the earth.
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Stephenson Kevin B.
Westfall Brian G.
Dowden Donald S.
Nguyen Hoang
Trimble Navigation Limited
Wong Don
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