Planar antenna including a superstrate lens having an effective

Details Planar antenna including a superstrate lens having an effective Planar antenna including a superstrate lens having an effective

1998-10-23

2000-06-27

Wong, Don

Communications: radio wave antennas

Antennas

With spaced or external radio wave refractor

343700MS, 343909, 343911R, H01Q 1906

Patent

active

060812397

ABSTRACT:
A planar antenna that includes a high dielectric constant superstrate lens having a plurality of air holes that vary the actual dielectric constant of the lens to provide an effective dielectric constant superstrate lens. The holes can take on any shape and configuration in accordance with a particular antenna design scheme so as to optimize the effective dielectric constant for a particular application. In one particular design, the holes are formed in a random manner completely through superstrate lens, and the holes have an opening diameter less than 1/20th of the operational wavelength of the antenna. The holes act to vary the dielectric constant of the superstrate lens so that the resonant waves do not form in the lens, thus reducing power loss in the antenna. The holes are formed by a suitable mechanical or laser drilling operation.

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