Abstract
In this article, a compact four-port MIMO antenna system resonating from 4.7–5.1 GHz on −6 dB criteria is discussed. The proposed antennas are arranged in a perpendicular manner providing diversity with good isolation characteristics. The proposed antenna was fabricated and designed on a commercially available low-cost FR-4 substrate with a relative permittivity of 4.4. The total size of the antenna is 40 × 40 mm2, and a minimum isolation of 25 dB was observed at most nearby resonating elements. The proposed antenna was fabricated and tested at an in-house facility, and the measured results agree well with the simulations. The MIMO antenna characteristics, such as the envelope correlation coefficient (ECC) among any two radiating elements, have been found to be less than 0.1, and the diversity gain (DG) value evaluated showed that the proposed antenna is well designed. Furthermore, the SAR analysis showed that the desired antenna system is safe for users, with a value of 0.94 W/Kg. The channel capacity (cc) was found to be 18.7 bps/Hz, approximately 2.7 times more than SISO systems. Through its robust and reliable performance and its peak gain of 2.8 dBi, the proposed compact antenna is a good candidate for future 5G devices.
Highlights
With the upcoming upgraded communication standards, 5th Generation (5G) networks have emerged as the most vital part of the modern communicational infrastructure [1]
This paper presents a four-port inverted-Hook-shaped compact MIMO antenna for the n79 5G band
The proposed antenna was designed to resonate at the resonance frequency of 4.8 GHz allocated for the 5G n79 band
Summary
With the upcoming upgraded communication standards, 5th Generation (5G) networks have emerged as the most vital part of the modern communicational infrastructure [1]. In [20] a six element MIMO antenna system is presented in which low correlation has been observed among MIMO elements with a peak gain of 3.1 dBi. The total size of the six-element MIMO system is 136 × 68 mm. In [26] a four-port eight-element MIMO antenna array with orthogonal assembly is presented for an mmWave 28 GHz band. The size of the MIMO array system is 30 × 35 mm , while the peak gain achieved is 3.6 dBi. in [27] a two-port orthogonal MIMO configuration is presented for an mmWave band exhibiting approximately 4 GHz bandwidth. A two-port circularly polarized WLAN band antenna system is presented in [28] where the gain of the antenna is increased with the incorporation of a metasurface.
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