Stochastic Modeling of Microstrip Coupled Line Bandpass Filter

Abstract

Coupled Line Microstrip Bandpass Filters are considered as a promising candidate for bandpass filter for wireless and high frequency applications because of their small size, low cost and easy engineered fabrication. In this paper, a stochastic analysis of this coupled line bandpass filter which is based on Monte Carlo Model is developed, where the tolerances in the design parameters of this microstrip bandpass filter and their impacts on the filter performance are investigated. These design parameters include the thickness of the strips of the bandpass filter, their lengths and the spacing between them. The mean, the standard deviations and the probability distribution function of both the central frequency and the operating bandwidth are studied.