REMOVAL OF SURFACE-WAVE INDUCED RADIATION NULLS FOR PATCH ANTENNAS INTEGRATED WITH VEHICLE WINDSCREENS

Authors
SAMBELL A LOWES P KOROLKIEWICZ E
Citation
A. Sambell et al., REMOVAL OF SURFACE-WAVE INDUCED RADIATION NULLS FOR PATCH ANTENNAS INTEGRATED WITH VEHICLE WINDSCREENS, IEEE transactions on antennas and propagation, 45(1), 1997, pp. 176-177
Citations number
8
Categorie Soggetti
Telecommunications,"Engineering, Eletrical & Electronic
Journal title
IEEE transactions on antennas and propagation → ACNP
ISSN journal
0018926X
Volume
45
Issue
1
Year of publication
1997
Pages
176 - 177
Database
ISI
SICI code
0018-926X(1997)45:1<176:ROSIRN>2.0.ZU;2-N
Abstract
A solution to the problem of radiation nulls for patch antennas integr ated with vehicle windscreens is presented. The nulls, attributable to surface waves within the windscreen superstrate, are removed by the a ddition of a thin resistive film to the windscreen surface. Analysis o f the surface-wave modes at 5.8 GHz within two typical laminated winds creen structures coated with a resistive film shows a sheet resistance value of 50 Omega/sq to be appropriate, Polar-pattern results demonst rate the effectiveness of the technique in removing the radiation null s without significantly reducing the forward gain.