Compact acquisition system for a flexible large area monoport tactile surface

A compact acquisition system developed for a flexible large area monoport tactile surface is presented. This sensor requires a single port connection and avoids complicated matrix acquisition system. The tactile surface is a coplanar transmission line printed on a flexible large area. Touching the waveguide generates a reflected signal analyzed to locate the touch event. Theoretical background, design and measurements' results are presented to assess the compact acquisition system precision.