Optimization of coils in wireless telemetry systems using the Particle Swarm Optimization algorithm

In this work, we propose to use the Particle Swarm Optimization (PSO) method to optimize the power efficiency, the data gain, and the interference of wireless telemetry systems. Two design cases are discussed. The first one is a power only transmission system which is used in retinal stimulation. The system's power transmission efficiency after proposed optimization can achieve 79.1% at the frequency of 1MHz. The real system is implemented in PCB, and the testing result is close to the simulations. We also compare the results obtained from the sweeping optimization method with the proposed PSO method for this design case. The second system is a dual band system which transmits power and data at the frequency of 1MHz and 13.56MHz separately. After optimization, the efficiency can achieve 74.8%, with a 5.137 data gain and a small interference of 0.055.