CST – Computer Simulation Technology

The Effects of a Finite Ground Plane on the Characteristics of Printed Patch Antennas with and without a Suspended Patch

Title:
The Effects of a Finite Ground Plane on the Characteristics of Printed Patch Antennas with and without a Suspended Patch
Author(s):
F. Bobor-Oyibo, D. Smith, S J. Foti
Source:
7th International Symposium on Communication Systems Networks and Digital Signal Processing (CSNDSP), 2010
Vol./Issue/Date:
23 July 2010
Year:
2010
Page(s):
111 - 114
Abstract:
In most analyses of microstrip patch antennas the effects of a finite ground plane are neglected because it is assumed infinite. However, in mobile communication systems the ground plane of antennas must be finite. Therefore, the effect of the finite ground plane on the characteristics of printed patch antenna elements is worth investigation. In this paper a stacked patch antenna has been proposed and the effects of a finite ground plane on the total radiation pattern are investigated. In fact, we have shown that a truncated ground plane of width approximately one wavelength will produce a 3dB beam width for the patch of approximately 65 degrees in contrast to the 90 degrees which occurs for an infinite ground plane. A physical description of the reason for this is included.
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