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2017-08-17
A Compact MIMO/Diversity Antenna with WLAN Band-Notch Characteristics for Portable UWB Applications
By
Progress In Electromagnetics Research C, Vol. 77, 29-38, 2017
Abstract
In this paper, a compact multiple-input-multiple-output (MIMO)/diversity antenna with WLAN band notch characteristics, high isolation, and good ECC suitable for portable ultra-wideband (UWB) applications is presented. The proposed antenna has optimized dimensions of 29 mm × 38 mm. The antenna consists of two orthogonal circular monopoles with a 50 Ω microstrip feed line. In addition, to enhance the impedance bandwidth, a fractal slot, created using Minkowski fractal geometry, is introduced into the ground plane, which is located on the other side of the substrate, just below the feed line. Good isolation (≥ 21.5 dB) with a fractional bandwidth up to 220% is achieved between antenna elements by introducing two ground stubs and a rectangular slot in the ground plane. A band-notch characteristic in the WLAN band is obtained by etching an elliptical split-ring resonator (ESRR) in the radiator. Moreover, a diversity performance of the antenna in terms of ECC (<0.01) and capacity loss (<0.3 b/s/Hz) is performed. This paper offers, for the first time, a combined effect of fractal geometry and ESRR geometry in an antenna design. Finally, a comparison of the proposed antenna is performed with the UWB MIMO/diversity antennas existing in the literature. These results show the suitability of the presented antenna for portable UWB systems.
Citation
Shrivishal Tripathi, Akhilesh Mohan, and Sandeep Kumar Yadav, "A Compact MIMO/Diversity Antenna with WLAN Band-Notch Characteristics for Portable UWB Applications," Progress In Electromagnetics Research C, Vol. 77, 29-38, 2017.
doi:10.2528/PIERC17042002
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