A New Frequency Reconfigurable Antenna Using Proximity Fed Technique for Wireless Applications
Abstract
This electronic paper presents an innovative technology
for efficient use of the radio spectrum. This new frequency
reconfigurable rotatable antenna is intended for wireless
applications such as WLAN, WiMAX and Bluetooth mobile
applications. The working principle of this proposed work is
to print square patches mounted on the same circular dielectric
substrate feed by a proximity coupling to eliminate the noise
signal transmission and problems related to interference. The
three positions correspond to an operating frequency controlled
by a bipolar step-by-step engine. An optimization of the structure
using the FEM finite element method as well as a comparison
with other structures recently realized are detailed in this paper.
The final numerical simulation results are: WLAN 4.95-5.53 GHz
(BW = 11%) Gain = 6.06 dBi, WiMAX 3.35-3.75 GHz (BW =
11.2%) Gain = 7.48 dBi and Bluetooth 2.3-2.51 GHz (BW =
8.7%) Gain = 17.78 dBi.
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