Communications: radio wave antennas – Antennas – With vehicle
Reexamination Certificate
2007-10-30
2007-10-30
Le, Hoanganh (Department: 2821)
Communications: radio wave antennas
Antennas
With vehicle
C343S711000
Reexamination Certificate
active
11208211
ABSTRACT:
A method for improving the efficiency of antennas having transparent thin-film conductive surfaces, and antennas improved by the method are disclosed. For a selected frequency of antenna operation, values for surface current density in areas distributed over the surface of the thin-film are determined. Regions of the surface containing areas having concentrated current flow are identified based upon the determined values of current density. Antenna efficiency is improved by increasing conductivity in areas of the thin-film surface found to have concentrated current flow. The method enables the improvement of the efficiency of antennas having transparent thin-film conducting surfaces, without unnecessarily obstructing the optical view through the thin-film surfaces of the antennas.
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Hsu Hui-Pin
Hsu Tsung Yuan
Sievenpiper Daniel F.
Song Hyok J.
Talty Timothy J.
GM Global Technology Operations Inc.
Le Hoang-anh
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