Microstrip Coupled Line Bandpass Filter: A Stochastic Model

Coupled line microstrip filter is regarded to be a strong contender for high frequency and wireless applications, due to its compact size, inexpensive cost, and simple engineering manufacturing. The stochastic study of the proposed microstrip filter, based on the Monte Carlo Model, presented in this paper explores the uncertainties in the microstrip filter’s design parameters and their influence on the filter’s functionality. The filter's microstrip thickness, lengths, and spacing are all considered as design factors. The analysis investigates the variation of the standard deviations, the mean, and the probability distribution function of the operational bandwidth and central frequency of the band bass filter on different parameter tolerance scales.The presented model investigates how the filter's operational bandwidth and central frequency vary on various parameter tolerance scales, as well as how the mean, standard deviation and probability distribution function change.