Abstract
In this work, the synthesis of a hexagonal shaped frequency reconfigurable antenna based on the back-propagation network (BPN) is presented. Initially, two dimensions of the antenna are selected as the input of BPN and the best solution is considered as the optimal parameters of antenna design. The proposed antenna resonates at eight different bands of frequency, one at a time, using four p-i-n diodes for the variation between 2.36 GHz and 3.92 GHz. In this work, the Ansoft HFSS software is used for antenna design and simulation whereas BPN algorithms are implemented in Scilab software. The Proposed design is fabricated and validated. The frequency tuning ratio is found to be 1.66:1. In this design, the biasing circuit is incorporated into the ground plane of the antenna which reduces the parasitic effects and this design can be used for cognitive radio system applications. Moreover, the simulated and measured results are found to be in fine concurrence with each other.
Published Version
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