Abstract
A new T-shaped microstrip (TSM) feeding technique is proposed to improve the impedance bandwidth of an eccentric dual annular slot antenna (EDASA). Based on the parametric study, an optimized prototype was fabricated and tested. The obtained results show that the proposed optimized structure can achieve a substantially bandwidth improvement compared to a corresponding straight shape microstrip (SSM) fed EDASA. Moreover, with this design, the radiation performance is also improved in term of crosspolarization level. The proposed structure can find its application in wireless local area networks at 5.8 GHz.
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