Mimo Antenna for LTE Advance Application

Abstract

In this paper, the MIMO antenna design for LTE Advance Application is realized. The paper focused on designing high gain MIMO antenna for LTE Advance Application. The purpose of designing a MIMO antenna is to fix the problem of low/moderate gain of SISO antenna since to have higher gain in LTE Advance normally is by having array antenna which lead to larger antenna and higher cost and mutual coupling between MIMO before can cause loss of spectral efficiency and degrade performance of a MIMO system. The designed antenna used FR-4 board as the substrate material due to its good parameters for most application. It is also more available and much cheaper than any other PCB material. Meanwhile, copper has been chosen as conductive material which copper is high relative and also cheap. For the designing stage, Advance Design System (ADS) software has been used to design the antenna. The ADS software also has been used for the simulation of the designed antenna in terms of return loss (S11) and (S22), mutual coupling (S12) and (S21), gain, directivity, radiation pattern, power radiated and also impedance matching. For the measurement stage, the fabricated antenna has been using by Vector Network Analyzer (VNA). From this project, it can be seen that the measurement results were slightly different from the simulation results due to a few factors such as cable losses, and also soldering technique. However, the designed antenna still met the requirement of efficiency which is less than -10 dB of return loss and get at a frequency of 2.5 GHz.