Fuzzy Inference in Engineering Electromagnetics: An Application to Conventional and Angled Monopole-Antenna

摘要

The abilities of fuzzy inference methods in mod- eling of complicated systems are implemented to electromagnetics for the first time. The very popular and well known monopole antenna is chosen as a general example and a fast, simple and accurate fuzzy model for its input impedance is made by intro- ducing a new point of view to impedance basic parameters. It is established that a surprisingly little number of input data points is sufficient to make a full model and also the system behavior (dominant rules) are saved as simple membership functions. The validity of the derived rules is confirmed through applying them to the case of thin-angled monopole antenna and comparing the results with the measured. Finally using the spatial membership function context, input impedance of thick-angled monopole an- tenna is predicted and a novel view point to conventional elec- tromagnetic parameters is discussed to generalize the modeling method.