Back-to-back high-isolation iso-frequency repeater antenna using MEMS-Reconfigurable-Parasitics

In this work the capacity and feasibility of a new concept of reconfigurable-parasitics printed-dipole antenna system able to approach these demands on a dynamic way is analyzed and some preliminary results are presented. The technique proposes an on-the-antenna-switch (OASC) concept that improves compactness and efficiency of existing systems. In particular, a partially pixeled antenna is proposed and a particle swarm optimizer (PSO) is used to calculate the state of every OASC and optimize the dimensions of the structure. Dynamically reconfigurable systems, through microelectromechanical switches (MEMS) or other low losses devices, are needed because on isofrequency repeater systems the achievable isolation level between the transmitter and receiver depends not only on the antenna characteristics, but also on the scatterers around the repeater.