Research on MIMO Antenna Isolation Based on Novel Mesh Isolation Rings

Abstract

A novel mesh-like isolation rings structure metamaterial is proposed and loaded between two dipole MIMO antennas to enhance the isolation between antennas. The rectangular open resonant ring, the double-layer S-shaped open ring, and the new mesh isolation ring are loaded between the dipole antennas and the S-parameters of the antenna are simulated by HFSS (High Frequency Structure Simulator). The Miniaturized antenna with high isolation is obtained under the same condition that the antenna operating frequency was 2.45 GHz. The simulation experiment verified that the isolation of the dipole antenna loaded with the new mesh isolation ring is 18.87 dB higher than the rectangular open resonator ring and is 4.78 dB higher than the double-layer S-shaped split ring. The mesh-like rings improve the antenna isolation in the experiment.

Keywords:

• Metamaterial
• MIMO antenna
• isolation

Additional information

Funding

This work was supported by National key research and development plan project (2017YFE0135700); High level talent support project of Hebei Province (A201903011); Natural Science Foundation of Hebei Province (F2018209358); and North China University of Science and Technology Doctoral Research Startup Grant Project.