Field and S-Parameter Simulation of Arbitrary Antenna Structure with Variable Lumped Elements

Rongxing Zhang¹, Yao Xing¹, Juergen Nistler², Jianmin Wang¹

A new method is demonstrated to run S-parameter and E and B field pattern simulation of any arbitrary antenna structure without exact values of the lumped elements connected to it. With these simulation results, the S-parameters and field pattern can be easily calculated with any arbitrary lumped element values connected to the antenna structure by using simple matrix operation in Matlab programs. Because the Matlab calculation requires very small computation time, this method can be used to optimize the capacitor values to achieve matching at specific frequency, to improve field distribution and to reduce coil coupling.