A Study and Optimization of Different Probe Positions for Different Feeding Techniques using Particle Swarm Optimization

Being a promising alternative to traditional antennas, liquid antennas have gained high attention in the recent years due to their reconfigurability. As the probe feed position alters the impedance matching and electrical length, the performance like S11, gain and BW will change. This paper tries to illustrates the outcome of different probe positions for different probe types used in the cylindrical liquid antenna which is further optimized using Particle Swarm Optimization. CST Studio suite have been used to simulate the results. 4GHz frequency was maintained throughout the experiment by changing the feed lines and keeping the inner radius of the cylinder, height of the liquid and dielectric constant to excite the different modes of the antenna for multiple applications.