volume | PIER Journals

Abstract

The design of a half U-slot loaded square microstrip antenna is proposed for the dual band response offering circular polarization in the second band. On a substrate with thickness of 0.06λ_g, the half U-slot tunes the spacing in between TM₁₀, TM₀₁ and TM₁₁ resonant modes of the square patch to achieve dual band characteristics. In the two bands, measured impedance bandwidths of 6.49% and 17.36% with a broadside gain > 7.0 dBi are achieved. Against the equivalent square patch, the proposed dual band antenna offers 8% reduction in the patch area. With the achieved antenna characteristics, the proposed configurations satisfy the requirements of GSM 750/GPS L5 band applications.

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Dr. Aarti G. Ambekar

Professor Amit A. Deshmukh