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Quad-Port MIMO Antenna Design with Low SAR for 3.5 GHz 5G and 5.8 GHz ISM Bands | IEEE Conference Publication | IEEE Xplore

Quad-Port MIMO Antenna Design with Low SAR for 3.5 GHz 5G and 5.8 GHz ISM Bands


Abstract:

A 4-port MIMO antenna with a low specific absorption rate (SAR) is presented in this paper for 3.5 \mathrm{GHz} 5 \mathrm{G}, and 5.8 GHz ISM (Industrial, Scientific, a...Show More

Abstract:

A 4-port MIMO antenna with a low specific absorption rate (SAR) is presented in this paper for 3.5 \mathrm{GHz} 5 \mathrm{G}, and 5.8 GHz ISM (Industrial, Scientific, and Medical) band applications. The antenna is developed on a 0.252 \mathrm{~mm} thick Rogers 5880 substrate with a compact size of 36.2 \mathrm{~mm} \times 36.2 mm. The designed antenna offers a bandwidth of more than 100 \mathrm{MHz}(3.47-3.58 \mathrm{GHz}), and 350 \mathrm{MHz}(5.64-6.01 \mathrm{GHz}) at 3.5 GHz and 5.8GHz bands, respectively. The antenna also provides a good radiation efficiency higher than 90 \% within the functioning frequency bands with a peak gain of 2.01 dBi and 1.71 dBi at 3.5GHz and 5.8GHz, respectively. To check the radiation effect of the antenna in terms of SAR on the human tissue, a 3-layer biological tissue model is created. And, the SAR value of the designed antenna is calculated. With 125 \mathrm{~mW} of supply power, the proposed antenna shows a SAR value of 1.92 \mathrm{W} / \mathrm{Kg} and 0.465 \mathrm{~W} / \mathrm{kg} averaging on 10 \mathrm{~g} of tissue, while the antenna is positioned 10 \mathrm{~mm} away from the 3-layer human tissue model. The suggested antenna is a good fit for dual-band MIMO systems operating at sub-6 GHz based on its overall performance metrics.
Date of Conference: 20-24 May 2024
Date Added to IEEE Xplore: 11 July 2024
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ISSN Information:

Conference Location: Ginowan, Okinawa, Japan

I. Introduction

In the past few years, the fifth generation (5G) technology has been established worldwide and advancing for its capabilities like high data rates, broader bandwidth, ultra-low latency, and huge network capacity [1]. While the 3.5 GHz frequency band is licensed as the 5G mid-band by most of the countries of the world because of its ability to transmit data at a longer distance than the 5G high band of 28 GHz [2, 3]. On the other hand, in recent years, the 5.8 GHz ISM band has become more popular than the 2.4 GHz ISM band because of its higher data transmission rates [4– 7]. Additionally, most of the antenna researchers are considering the multi-input-multi-output (MIMO) capable antennas for the recent and upcoming wireless communication systems because of their benefit over multipath fading [8– 10]. Moreover, the MIMO antennas can convey more data without requiring additional bandwidth by using spatial multiplexing [11]. Furthermore, through the use of many antennas and signal propagation phase control, MIMO antenna technology enables operators to electronically adjust an RF signal’s directivity [12, 13].

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