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PIER PIER B PIER C PIER M PIER Letters
2008-06-24
Compact Dual Band Slot Loaded Circular Microstrip Antenna with a Superstrate
By
Deepti Krishna,

    Dr. Deepti Krishna

    Department of Electronics

    Cochin University of Science & Technology

    India

    Homepage

Madanan Gopikrishna,

    Dr. Madanan Gopikrishna

    Department of Physics

    Govt. Victoria College, Palakkad

    India

    Homepage

Chandroth K. Aanandan,

    Dr. Chandroth K. Aanandan

    Department of Electronics

    Cochin University of Science and Technology

    India

    Homepage

Pezholil Mohanan,

    Professor Pezholil Mohanan

    Department of Electronics

    Cochin University of Science & Technology

    India

    Homepage

Kesavath Vasudevan

    Professor Kesavath Vasudevan

    Department of Electronics

    Cochin University of Science & Technology

    India

    Homepage

Progress In Electromagnetics Research, Vol. 83, 245-255, 2008
doi:10.2528/PIER08052201
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.
Citation
Deepti Krishna, Madanan Gopikrishna, Chandroth K. Aanandan, Pezholil Mohanan, and Kesavath Vasudevan, "Compact Dual Band Slot Loaded Circular Microstrip Antenna with a Superstrate," Progress In Electromagnetics Research, Vol. 83, 245-255, 2008.
doi:10.2528/PIER08052201
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