Introduction

Introduction - SW version 2.0

Guided Wave Technology's Coupling Matrix Synthesis software facilitates synthesis of coupling matrices for Chebyshev filtering functions, with prescribed finite-position transmission zeroes.

It also gives a fast and accurate overview of insertion loss, isolation, group delay and coupling coefficients versus filter order, return loss and transmission zero positions. The software allows placement of complex transmission zeroes, which opens up for group delay shaping.

The software is intended for engineers, students and others who are engaged in design and analysis of microwave filters from both component and system point of views. To operate the software only basic knowledge about filters and filter terms are required.

The 'engine' in the software is similar to the tool which available on Guided Wave Technology's site and which has been used by thousands of engineers and students over the past 6 years, which means that the software is based on very well proven and tested principles.

The main difference between the web edition and the present PC edition is the user interface, which has been considerably improved through:

extended parameter plotting options (e.g. phases of S11 and S21)
advanced graph and marker functions (e.g. marker lines)
easily re-scalable axes
coupling matrix values may be manually edited whereby the effect on filter characteristics can be observed
better overview (input and output parameters can be seen at the same time)
printing option
saving and loading of designs
much faster response
integrated help functionality
s-parameter data file (s2p) output

Even though lots of efforts have been put in making this software self explanatory and easy to use, some issues, terms and concepts may need some extra clarification, which is the intention of this small manual to give.