A wide band log periodic millimeter‐wave antenna for 5G femtocells applications

Abstract

A wide band log periodic millimeter‐wave antenna is proposed for 5G femtocells applications. This log periodic antenna consists of circular patches with radius kept up at a proportion of scaling factor τ=1.05. The proposed antenna prototype is designed and simulated at a frequency range of 25 to 35.5 GHz with a fractional bandwidth of 34.73%. This proposed antenna exhibits low return loss at all frequency bands such as 26, 27.5, 29, 30, 32, 33, 35, and 38.1 GHz with reflection coefficient values such as −13.41,−29.07,−30.9,−23.11,−11.29,−11.44,−12.47, and −10.01 dB including almost 101% radiation efficiency and attained maximum gain values such as 11.36,10.86,10.83,11.31,9.88,9.19,11.5, and 12.36 dBi. Over the entire frequency band, the proposed antenna exhibits right‐hand circular polarization with an axial ratio of under 3 dB. Furthermore, the antenna is fabricated and measured the results where there is a better agreement with simulated results. This type of low‐profile antenna can be applicable for femto base stations for 5G communications.

Miniaturized Hexagonal Antenna with Defected Ground Plane for 5G MM Wave Applications

“…Moreover, some authors have discussed the necessity of huge data rate such as gigabits/second or terabits/second which tells the importance of mm-wave communication and terahertz communication [10]. Also, a log periodic antenna with ultra-wideband of 25 GHz to 35.5 GHz is developed [11]. Some authors have reported a new way of designing mobile communication using 28 GHz and 39 GHz millimeter wave frequency bands with semiconductor technologies at mm-wave band [12].…”