Dual Frequency MIMO Antenna with Neutralization Line

Abstract

In this paper, a dual frequency MIMO antenna using a neutralization line to improve isolation is designed. The lower frequency resonant unit is an inverted F antenna and another stub is added to generate higher frequency. A neutralization line is etched between the present antennas to improve the isolation. The simulation results show that the two operating bands of the antenna are 2.39GHz-2.53GHz and 4.57GHz-6.09GHz. The isolation between the two ports of the antenna is S21 < -19.3dB in the low frequency band, and S21< -24.6 dB in the high frequency band. It is meet the requirements of the WLAN communication.