Analysis of intersymbol interference in a 60 GHz-band compact-range wireless access system using various large array antennas

A compact-range wireless access system in the 60 GHz-band has been proposed for multi-Gb/s data transfer. Large array antennas adopting in the transmitter operate in their near-field regions, and provide us with a large communication zone and a pure propagation environment. However, intersymbol interference (ISI) may significantly degrade the system performance especially when the receiver is close the transmitter due to the large transmitting antenna size. In this paper, the corporate feed waveguide slot array with square aperture and the radial line slot array with circular aperture are investigated. The concept of ISI is essential to improve the overall system performance.