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Bandwidth is the limiting factor in using electromagnetic band gap materials (EBGs). Many studies have been carried out on optimizing EBG geometries to increase bandwidths with limited success. This paper will present an antenna integrated with a high impedance electromagnetic bandgap surface (HIS) that can be independently tuned over two separate frequency bands. The HIS consists of a dual layer...
This paper describes some techniques and results for reconfiguring and tuning antennas and electromagnetic band gap materials for use in the mobile communication bands. A microstrip patch antenna operating in the 5 GHz range and tuned by liquid crystal is presented. The performance of the material has limitations for efficiency at these frequencies. Bandwidth is the limiting factor in using electromagnetic...
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