CST – Computer Simulation Technology

Dual-Band Textile MIMO Antenna Based on Substrate-Integrated Waveguide (SIW) Technology
Sen Yan, Ping Jack Soh, Guy A. E. Vandenbosch
Vol 63
pp 4640 - 4647
Dual-band antenna, MIMO antenna, substrateintegrated waveguide (SIW) antenna, textile antenna, wearable antenna
A dual-band textile antenna for multiple-input– multiple-output (MIMO) applications, based on substrateintegrated waveguide (SIW) technology, is designed. The fundamental SIW cavity mode is designed to resonate at 2.4 GHz. Meanwhile, the second and third modes are modified and combined by careful placement of a via within the cavity to enable wideband coverage in the 5-GHz WLAN band. The simple antenna topology can be fabricated fully using textiles in a planar form, ensuring reliability and comfort. Numerical and experimental results indicate satisfactory antenna performance when worn on body in terms of impedance bandwidth, radiation efficiency, and specific absorption ratio (SAR). In order to validate its potential for MIMO applications, two elements of the proposed SIW antenna are arranged in six configurations to study the performance in terms of mutual coupling and envelope correlation. It is observed that the placement of the shorted edges of the two elements adjacent to each other produces the lowest mutual coupling and consequently the best envelope correlation.

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