ANALYSIS OF WIDEBAND LOOP ELEMENT ANTENNA ARRAY FOR 5g MM-WAVE DEVICES.

Abstract

In recent years mobile operators have been challenged to deliver multimedia applications with higher data rates, low latency, and better quality of service of mobile communications. This has led to a large number of inventions and technological advancement in past decades which is the prime goals of the upcoming 5th generation (5G) mobile networks, but the challenging issue here is atmospheric conditions and interference by adjacent channels. These limitations can be overcome by designing directive antennas with high gain and stable radiation patterns to be used in a dense network at ultra-high throughputs. In this thesis, a compact, lightweight, low-cost, and easy install and incorporate mm wave printed square loop antenna with a perturbed ground plane is proposed. Firstly I designed a single element consisting of four rectangular square loops on the transmission line is designed. The squared loop antenna elements are arranged on top of each other by inserting of square lot in the ground plane which will achieve wideband resonance response. This design will definitely enable spatial diversity and minimize the effects of interference between adjacent channels. And also, this design will provide a dual beam within the desired or resonant frequency band, as we know there is high interference of adjacent channels at a high-frequency level so that the provided dual beam will minimize this adjacent channel interference. A brief literature review and comparison of this work with other published works is also presented. To evaluate the proposed design and looped array concept, a prototype is simulated for both, a single element, and an array. The simulation results show that the proposed antenna has a maximum gain and directivity of 4 dBi and 6.7 dBi for single element loop antenna, 10.6 dBi and 5.47 dBi for the proposed looped array antenna respectively. The VSWR and return loss values respectively found to be 1.516 and -12.47 dB for single element antenna, and 1.413 and -13.47 dB for looped array element antenna. The radiation efficiency for a single element antenna is -0.3809 and for looped element array antenna is - 0.3884. It is found that the measured results and the computed results are in good agreement. Therefore, we believe that these systems will find their applications within modern [mm] wave communication cellular devices.