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Gain and Infrastructure health monitoring using embeddable wireless sensors has drawn considerable attention. Such sensors will need antennas to support data communication as well as wireless power reception functions. In this paper the gain and return loss properties of an embedded microstrip patch antenna within concrete are studied as function of the air-gap and concrete cover thickness. The transmission...
Genetic algorithm optimization combined with V2D-FDTD simulations has been used to redesign the geometry of the Hat Feed. The new evolved feed has improved return loss properties while keeping the good overall efficiency of the original feed. The bandwidth of the new feed is about 33% (at 7.9 GHz), compared to about 11% for the original. In addition, the return loss level within the hand has dropped...
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