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A multiband antenna with a parasitic radiator for GSM900/DCS1900/WiMax wireless communication services is proposed. The proposed antenna is small in size (40mm ?? 40mm ?? 1.6mm) with simple structure. By adjusting the electromagnetic coupling between radiators, resonant frequencies and bandwidth of the antenna are controlled and the multiple-resonant operations are achieved. Parametric analysis has...
There are many examples of antennas with exemplary bandwidth performance for their size that are characterized as having multiple impedance resonances within their operating bandwidth are presented in this paper. While the relationship between bandwidth and Q-factor is well defined for single resonance antennas, the relationship is more complex for multi-resonant antennas, and the degree of optimality...
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