Abstract
In this work suspended microstrip antennas with a new simple feeding technique suitable for ultra-wideband (UWB) operations are presented. The antenna with the proposed feed provides a return loss (S11<-10dB) bandwidth of more than 50%. The antenna geometry presented here is fed through an SMA connector which is physically placed away from the radiator patch. The probe pin so placed away from the radiator element couples the signal to the main radiator element through capacitive means. The antenna configuration investigated here offers an impedance bandwidth of 52.83%. The corresponding value for the measured result is 52.30%. Further, the geometry investigated here offers a gain of above 5dB and nearly stable radiation patterns across the entire frequency range of operation. The proposed geometry was optimized through parametric analysis and verified with experimental results.
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