A Broadband Meta surface Based MIMO Antenna with High Gain and Isolation For 5G Millimeter Wave Applications

Abstract

This paper proposes a Broadband Meta surface-based MIMO Antenna with High Gain and Isolation For 5G Millimeter applications. A single antenna is transformed into an array configuration to improve gain. As a result, each MIMO antenna is made up of a 1x2 element array supplied by a concurrent feedline. A 9x6 Split Ring Resonator (SRR) elongated cell is stacked above the antenna to improve gain and eliminate the coupling effects between the MIMO components. The substrate Rogers 5880 with a thickness of 0.787mm and 1.6mm is used for the antenna and meta surface. Furthermore, antenna performance is assessed using S-parameters, MIMO characteristics, and radiation patterns. The final designed antenna supports 5G applications by embracing the mm-wave frequency spectrum at Ka-band, there is a noticeable increase in gain. In addition, once the meta surface is introduced, there is an improvement in isolation.

Mutual Coupling Reduction in Compact MIMO Antenna Operating on 28 GHz by Using Novel Decoupling Structure

“…The high-gain antenna given in [19,21] has a large and complex geometry. The antenna referred to in [18][19][20][21][22][23][24][25][26][27][28][29][30] has good isolation but either has complex and large geometry or a narrow band. This conversation demonstrates that there remains a need for research to develop low-cost, low-profile, compact antennas with reduced geometry.…”

“…Researchers have adopted many techniques to improve the isolation between elements in MIMO antenna systems. These techniques include the loading of FSS (Frequency Selective Surface) sheets [15,16], absorbers [17], metamaterial [18][19][20][21][22], defective ground structures (DGS) [23][24][25][26], and decoupling structures [27][28][29][30][31]. The FSS sheet is kept below the antenna to bounce back the waves in order to upgrade the outcomes.…”

“…In [21,22], a high-isolated antenna is given, which offers isolations around 40 dB. The antenna performs at 25-26.5 GHz bandwidth and contains four elements.…”