Single and Double Stub Tuner Impedance Matching of Microwave Circuits Using Mathcad Software

Abstract

In this paper impedance matching, using tuning stubs of different types and forms are  designed and analyzed using Mathcad Software. The aim of this paper is impedance matching which is to connect an arbitrary complex-valued load impedance to a source with a given resistive internal impedance (Intrinsic Impedance Zo) without causing input reflection and to ensure transfer of maximum power  from source to load (ZL). Smith chart is designed in this paper with a Mathcad software. This tool is considered as a very powerful tool to show the results on Smith chart. Single and double stub tuners are designed and analyzed with examples. The designed software is used in this paper for different cases, such as single stub and double stub tuners (open-ended and short-ended) for matching capacitive and inductive loads. The software designed in this paper is useful  for designers working in this field as well as in education process.