Analysis of a near field MIMO wireless channel using 5.6 GHz dipole antennas

Abstract

Understanding the impact of interference upon the performance of a multiple input multiple output (MIMO) based device is of paramount importance in ensuring a design is both resilient and robust. In this work the effect of element-element interference in the creation of multiple channels of a wireless link approaching the near-field regime is studied. The elements of the 2-antenna transmit-and receive-arrays are chosen to be identical folded dipole antennas operating at 5.6 GHz. We find that two equally strong channels can be created even if the antennas interact at sub-wavelength distances, thus confirming previous theoretical predictions.

Near-Field MIMO Communication Links

“…Implementation of such a system but based on Radio-Frequency (RF) in small scale, for application of chip-to-chip or board-to-board communication, is still challenging due to the demand of high data rates and small antenna size with high-efficiency [6]. Different antenna topologies and artificial materials have been proposed to enhance the performance of RF based interconnects [6], [11]- [14]. Little work has been done in investigating the prospect of Multiple-input Multiple-Output (MIMO) technologies to improve the performance of wireless RF interconnects in the near-field.…”