Self-Switching Antenna for Higher Efficiency in RFID applications

In conventional RFID applications the total radiated power is constantly focused towards a single area, where are expected objects tagged with transponders. Essentially a transponder needs this energy just for a few milli-seconds. For all the other time the energy could be used for other reasonable purposes, which would lead to a higher energy efficiency. Our proposed solution is Self Switching Antenna (SSA), which is switching in serial manner, each $\tau$ seconds. Each area receives for $\tau$ seconds the total radiated energy and the cycle repeats with a period of T= N x $\tau$. This leads to an unlimited number of areas possible. These areas are geometrically defined and might be independently addressed at a well defined time slot. Such a system may be defined as GDMA communication type (Geometrically Domain Multiple Access).