A Low-Profile Pattern Reconfigurable MIMO Antenna

A low-profile pattern reconfigurable multiple-input multiple-output (MIMO) antenna is demonstrated in this paper. The antenna element is composed of a rectangular monopole and two sets of parasitic strips loaded with PIN diodes. The parasitic strips can operate as a reflector or a director by switching the PIN diodes on or off. As a result, the element provides a bidirectional mode and two directional modes. The MIMO antenna consists of two elements, which are arranged opposite to each other. Two decoupling strips are introduced to improve the isolation between the elements. The simulation and measurement results illustrate that the proposed antenna has nine pattern configurations. The overlapped bandwidth of the nine modes is 10.6%, and the isolation is greater than 16.5 dB. Also, a good diversity performance is obtained.

[1]  Y. Guo,et al.  A Pattern Reconfigurable U-Slot Antenna and Its Applications in MIMO Systems , 2012, IEEE Transactions on Antennas and Propagation.

[2]  M. Ayatollahi,et al.  A Compact, High Isolation and Wide Bandwidth Antenna Array for Long Term Evolution Wireless Devices , 2012, IEEE Transactions on Antennas and Propagation.

[3]  Le Kang,et al.  Compact Offset Microstrip-Fed MIMO Antenna for Band-Notched UWB Applications , 2015, IEEE Antennas and Wireless Propagation Letters.

[4]  Taejoon Park,et al.  Pattern-Reconfigurable MIMO Antenna for High Isolation and Low Correlation , 2014, IEEE Antennas and Wireless Propagation Letters.

[5]  Moe Z. Win,et al.  On the capacity of spatially correlated MIMO Rayleigh-fading channels , 2003, IEEE Trans. Inf. Theory.

[6]  Abdurrahim Toktas,et al.  G-shaped band-notched ultra-wideband MIMO antenna system for mobile terminals , 2017 .

[7]  Huseyin Arslan,et al.  High-Gain Pattern Reconfigurable MIMO Antenna Array for Wireless Handheld Terminals , 2016, IEEE Transactions on Antennas and Propagation.

[8]  Anja K. Skrivervik,et al.  A Novel Compact CPW-Fed Polarization Diversity Ultrawideband Antenna , 2014, IEEE Antennas and Wireless Propagation Letters.

[9]  Kapil R. Dandekar,et al.  Experimental Analysis of Pattern and Polarization Reconfigurable Circular Patch Antennas for MIMO Systems , 2010, IEEE Transactions on Vehicular Technology.

[10]  Buon Kiong Lau,et al.  Design of Closely Packed Pattern Reconfigurable Antenna Array for MIMO Terminals , 2017, IEEE Transactions on Antennas and Propagation.

[11]  Shuai Zhang,et al.  Mutual Coupling Reduction for UWB MIMO Antennas With a Wideband Neutralization Line , 2016, IEEE Antennas and Wireless Propagation Letters.

[12]  R.W. Heath,et al.  Design and Evaluation of a Reconfigurable Antenna Array for MIMO Systems , 2008, IEEE Transactions on Antennas and Propagation.