Title | ||
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Dual Circularly Polarized Planar Four-Port MIMO Antenna with Wide Axial-Ratio Bandwidth. |
Abstract | ||
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A broadband compact-sized planar four-port multiple-input-multiple-output (MIMO) antenna with polarization diversity is presented. The proposed dual circularly polarized (CP) MIMO antenna consists of four G-shaped monopole elements, two of which are left-hand CP and the other two are right-hand CP. A vertical line strip in the G-shaped radiating element acts in balancing the vertical and horizontal electric field components to obtain 90 degrees phase difference between them for circular polarization. Also, an I-shaped strip is incorporated between the ground planes of the G-shaped antenna elements to obtain equal voltage level in the proposed MIMO configuration. The dual circular polarization mechanism of the proposed MIMO/diversity antenna is analysed from the vector current distributions. The impedance bandwidth (S-11 <= -10 dB) of the MIMO antenna is 105.9% (4-13 GHz) and the 3 dB axial ratio bandwidth (ARBW) is 67.7% (4.2-8.5 GHz), which is suitable for C-band applications. The overall size of the MIMO antenna is 70 x 68 x 1.6 mm(3), and the minimum isolation between the resonating elements is 18 dB. The envelope correlation coefficient is less than 0.25, and the peak gain within the resonating band is 6.4 dBi. |
Year | DOI | Venue |
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2020 | 10.3390/s20195610 | SENSORS |
Keywords | DocType | Volume |
diversity,dual circularly polarized,isolation,MIMO,planar | Journal | 20 |
Issue | ISSN | Citations |
19 | 1424-8220 | 0 |
PageRank | References | Authors |
0.34 | 0 | 5 |
Name | Order | Citations | PageRank |
---|---|---|---|
S. Sachin Kumar | 1 | 1 | 1.71 |
Gwan Hui Lee | 2 | 0 | 0.34 |
Dong Hwi Kim | 3 | 0 | 0.34 |
Hyunchul Choi | 4 | 45 | 11.63 |
Kang Wook Kim | 5 | 1 | 2.99 |