Abstract

This article presents a design for high-gain MIMO antennas with compact geometry. The proposed design is composed of four antennas in MIMO configuration, wherein, each antenna is made up of small units of microstrip patches. The overall geometry is printed on the top layer of the substrate, i.e., Rogers RT-5880 with permittivity of 2.2, permeability of 1.0, dielectric loss of 0.0009, and depth of 0.508 mm. The proposed design covers an area of 29.5 × 61.4 mm2, wherein each antenna covers an area of 11.82 × 25.28 mm2. The dimensions of the microstrip lines in each MIMO element were optimized to achieve a good impedance matching. The design is resonating at 61 GHz, with a wide practical bandwidth of more than 7 GHz, thereby covering IEEE 802.11ad WiGig (58–65 GHz). The average value of gain ranges from 9.45 to 13.6 dBi over the entire frequency bandwidth whereas, the average value of efficiency ranges from 55.5% to 84.3%. The proposed design attains a compact volume, wide bandwidth, and good gain and efficiency performances, which makes it suitable for WiGig terminals.

Highlights

  • Nowadays, there is an increasing demand for high data rates, high voice quality, and video applications around the world

  • The high operating frequency of Wireless Gigabit Alliance (WiGig) will meet the future requirements of higher data rates to transfer data, voice, and video streaming at multigigabits per seconds

  • The results presented by the author show that the design provides a high data rate, a better capacity performance, and a high gain compared to the single-element antennas

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Summary

Introduction

There is an increasing demand for high data rates, high voice quality, and video applications around the world. Data rates of 3G and 4G technology do not satisfy the future data-rate requirements. Wireless Gigabit Alliance (WiGig) is an emerging technology that will play a vital role in providing higher data rates for industrial and communication sectors. It has its own standardized protocol that is IEEE 802.11ad (58–65 GHz). The high operating frequency of WiGig will meet the future requirements of higher data rates to transfer data, voice, and video streaming at multigigabits per seconds. It is a mandatory requirement to design and build advanced antennas to support an ultra-high data rate. Antenna designing at millimeter (mm)-wave frequencies is currently a highly demanded area of research around the world. The fabrication of these antennas is very challenging, since the antenna dimensions are very small

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