WIRELESS THREE DIMENSIONAL MICROWAVE HOLOGRAPHIC POINTER (3DMI-HOPE) USING MICROSTRIP ANTENNAS

摘要

This invention relates to a novel input system (3DMI-HOPE) that allows users to intuitively specify three-dimensional (3D) coordinates and enter it to computer memory. The new holographic pointer has reached high positioning accuracy of 1 mm using 5.2 GHz (802.11 b WLAN standard) operating frequency with resolution capability of multipoint capturing of lambda0 (free space wave length) point's separation. The system has been developed with reduced size U-shaped slot antenna array to act as hologram recording plate. A new technique for reconstruction of virtual image of object has been developed which allows 3DMI-HOPE to have reconstruction volume equal to or greater than hologram size.