Modeling a Slotted Multiband Gasket Monopole Antenna Using NEC

摘要

In this paper, a solid plate, slotted, multiband gasket monopole antenna is modeled using NEC with a wire grid approximation of the plate structure. The objective of this work is to determine the extent and accuracy to which the wire grid NEC model can predict the resonant frequencies, the anti- resonant frequencies, and the impedance of the multiband gasket. The NEC simulated return loss and impedance are compared with measured data and FDTD simulations performed using CST's Microwave Studio (MWS). Results show that the wire grid NEC model can be used to accurately predict the return loss properties of the antenna including its operating frequencies of minimum return loss. It is also shown that the wire grid NEC model can very accurately predict the antenna's resonant and anti-resonant frequencies, and the corresponding resistance.