COMPACT DUAL BAND SLOT LOADED CIRCULAR MICROSTRIP ANTENNA WITH A SUPERSTRATE | Zendy

Deepti Das Krishna | Zendy; Madanan Gopikrishna | Zendy; C. K. Aanandan | Zendy; P. Mohanan | Zendy; Kesavath Vasudevan | Zendy

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COMPACT DUAL BAND SLOT LOADED CIRCULAR MICROSTRIP ANTENNA WITH A SUPERSTRATE

Author(s) -

Deepti Das Krishna,

Madanan Gopikrishna,

C. K. Aanandan,

P. Mohanan,

Kesavath Vasudevan

Publication year - 2008

Publication title -

electromagnetic waves

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.437

H-Index - 89

eISSN - 1559-8985

pISSN - 1070-4698

DOI - 10.2528/pier08052201

Subject(s) - microstrip antenna , multi band device , patch antenna , slot antenna , microstrip , materials science , antenna (radio) , acoustics , optics , physics , telecommunications , engineering

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.

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