Bandwidth enhancement and size reduction of microstrip slot antennas

dc.contributor.authorLatif, SI
dc.contributor.authorShafai, L
dc.contributor.authorSharma, SK
dc.description.abstractReduced size microstrip monopole slot antennas with different slot shapes-straight, L and inverted T, and placed on a small ground plane, are investigated. The ground plane size is 50 mm x 80 mm, which is about the size of a typical PC Wireless card. Detailed simulation and experimental investigations are conducted to understand their behavior and optimize for broad-band operation. It is shown that, the variation in the slot shape, from straight to L and T shapes, helps in generating additional resonances, which when coupled to the original resonances of the slot, further increases impedance bandwidths. The bent shapes of the L and T slots reduce their height and provide more space on the ground plane for electronics. A mirror image dual L-slot antenna, placed at two adjacent corners of the ground plane, is also investigated and optimized for the polarization diversity. They provide an impedance bandwidth of 87 %, with near orthogonal radiation characteristics. The measured impedance bandwidths (S-11 = -10 dB) of up to 60%, 84%, and 80% are achieved for these straight, L and inverted T slots respectively, by suitably selecting their design parameters. The simulation results are in good agreement with the experimental data considering several practical issues.en
dc.format.extent1008323 bytes
dc.identifier.citation0018-926X; IEEE TRANS ANTENNAS PROPAGAT, MAR 2005, vol. 53, no. 3, p.994 to 1003.en
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dc.rightsrestricted accessen_US
dc.statusPeer revieweden
dc.subjectdual slot antennaen
dc.subjectfinite ground planeen
dc.subjectmicrostrip line feeden
dc.subjectmicrostrip slot antennaen
dc.subjectpolarization diversityen
dc.subjectwide bandwidthen
dc.subjectGROUND PLANEen
dc.titleBandwidth enhancement and size reduction of microstrip slot antennasen