Abstract
ABSTRACT The paper addresses the design of microstrip fed slot antenna with bandwidth enhancement and minimization of cross-polarization in planar printed configuration. The reference radiating slot antenna resonates at 2.86 GHz having 5.95% – 10 dB bandwidth. Next, the reference slot antenna is loaded with two rectangular loops and four rectangular loops resulting 13.22% and 33.03% −10 dB bandwidth respectively but with poor cross-polarization. To overcome the problem of poor cross-polarization, we have introduced the split ring in one of our antenna design and metallic rings on the bottom of the substrate in another antenna design. These two designs introduce the oppositely directed phi-component of electric field along the radiating slot which cancels out phi-component of electric field, the root cause of increased cross-polarization.
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