Compact dual band slot loaded circular microstrip antenna with a superstrate

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Compact dual band slot loaded circular microstrip antenna with a superstrate

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Title: Compact dual band slot loaded circular microstrip antenna with a superstrate
Author: Deepti Das, Krishna; Gopikrishna, M; Aanandan, C K; Mohanan, P; Vasudevan, K
Abstract: Design of a compact dual frequency microstrip antenna is presented. The structure consists of a slotted circular patch with a dielectric superstrate. The superstrate,not only acts as a radome, but improves the bandwidth and lowers the resonant frequency also. The proposed design provides an overall size reduction of about 60% compared to an unslotted patch along with good efficiency,gain and bandwidth. The polarization planes at the two resonances are orthogonal and can be simultaneously excited using a coaxial feed. Parametric study of this configuration showed that the frequency ratio of the two resonances can be varied from 1.17 to 1.7 enabling its applications in the major wireless communication bands like AWS, DECT,PHS,Wi.Bro, ISM,and DMB. Design equations are also deduced for the proposed antenna and validated.
URI: http://dyuthi.cusat.ac.in/purl/2722
Date: 2008


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