High Frequency Analysis of Bandpass Filters

The filters are widely used in high frequency applications. It is very important to use the proper filter for each type of application. For this reason, is a necessity analyzing the filter in order to find his parameters. The goal of this paper is the high frequency analysis of bandpass filters in order to extract the S parameters, to evaluate the filter behavior in a certain band of frequency, to represent the electric field intensity in different planes and the current density on the conductors from which the filter is constructed for different configurations. Different structures of bandpass filters will be analyzed in a wide range of frequency.