Design and SAR Analysis of Dual Band Antenna Array for 5G Cellular Communication Systems

Document from the year 2018 in the subject Engineering - Power Engineering, grade: 3.4, , language: English, abstract: This paper presents design and SAR analysis of a dual band 5G antenna array for future mobile communication. The proposed antenna operates in the Ka-band, at 28 GHz and 38 GHz. Roggers-5880 is used as a substrate having relative permittivity, thickness and loss tangent of 2.2, 0.254 mm and 0.0009 respectively in the design of the proposed dual band antenna. The main lobe gain of the single element dual band antenna is 7.71 dB at 28 GHz band and 7.73 dB at 38 GHz band respectively. As the gain requirement for 5G mobile communication system is 12 dB, thus an array technique is used to achieve the desired gain and produce bore side gain of 12.5 dB at 28 GHz band and 12.1 dB at 38 GHz band respectively. The dual band antennas matched with a VSWR < 1.16 in the two frequency bands. The designed antenna array is elliptically polarized at both bands of interest. The SAR analysis averaged over 10 g of tissue of the proposed dual band antenna array has been carried out on head of the human body giving a safer limit of 0.37w/kg at 28 GHz band and 1.34w/kg at 38 GHz band < 2w/kg according to European IEC Standard. All the simulations are carried out using CST MWS. The proposed antenna is a good candidate for applications in 5G wireless technology.