Abstract

This article presents the performance of a hexagonal split-ring resonator (H-SRR) antenna in the 2.4/5.2 GHz bands and evaluation of channel capacity for single-input multiple-output (SIMO) and multiple-input single-output (MISO) systems. The proposed antenna consists of two hexagonal-shaped split-ring resonators for dual-band operation with higher gain and metallic loadings between the rings to achieve a wide impedance bandwidth. Impedance modeling of the proposed antennas confirms the role of conductance and inductance of metallic loading for enhancing the antenna characteristics, and thus, the fabricated H-SRR antenna achieves dual-band features with improved impedance bandwidth of 50%/76% and a gain of 2.32/2.57 dB at 2.4/5.2 GHz frequency bands. The performance of the hexagonal SRR antenna is then investigated for space diversity applications in the 1×3 SIMO and 3×1 MISO systems with circular SRR antennas. In linear and spherical arrangements of the antennas, the channel capacity is found in the range of 2.7 to 4.8 Mbps at the 2.4/5.2 GHz bands, which also confirms its dependency on the number of antennas as well as on the placement of antennas.

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Dr. Puneet Sehgal

Dr. Kamlesh Patel

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