Progress In Electromagnetics Research C
ISSN: 1937-8718
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By A. Gupta, S. K. Sharma, and R. K. Chaudhary

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In this paper a compact planar dual-mode metamaterial (MTM) antenna using rectangular type complementary split ring resonator (CSRR) is proposed. It is observed that an increase in series capacitance tends to decrease resonant frequency at which n = 1 mode is obtained in the proposed antenna. Zeroth order mode (ZOR) is obtained by means of rectangular type CSRR, tends to provide the miniaturized area. Dispersion relations are shown in order to characterize the metamaterial behavior by extracting the equivalent circuit parameters. The resonant frequency of the antenna is 2.14 GHz with input reflection coefficient up to -45 dB. The electrical size of the proposed MTM antenna is 0.321λ0 × 0.285λ0 × 0.011λ0. ZOR mode is observed at 1.15 GHz although the proposed antenna is operated at 2.14 GHz. Furthermore, it achieves simulated antenna gain of 2.60 dB with 70% radiation efficiency. In order to verify the simulation results of antenna, a prototype is fabricated and measured.

A. Gupta, S. K. Sharma, and R. K. Chaudhary, "A Compact Dual-Mode Metamaterial-Inspired Antenna Using Rectangular Type CSRR," Progress In Electromagnetics Research C, Vol. 57, 35-42, 2015.

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