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OptiMatch® User Manual
Impedance Match Network Optimization Utility
 



OPTIMATCH MODULE

Introduction

The best way to learn how to use a program is by using it, so we've created several examples for you. Optimize all types of impedance match networks for minimum VSWR, including a narrow band L-Match and a complex broadband interstage match. We've also included an example of device modelling.

We must assume a basic knowledge of the Smith Chart and impedance matching techniques. If you are new to this topic, follow along, you'll likely get the drift of it! If, after working thru the first example, you are baffled, we suggest you obtain copies of the references listed in Appendix D for study.

Another good way to quickly "get up to speed" on Smith Charts and impedance matching is to use our SmithMatch program. It gives you a detailed Smith Chart on your high resolution graphics screen, a library of elements to work with, and introduces you, by example, to the fundamentals of impedance matching using a Smith Chart.

All the impedance files, (we call them .IMP files), needed for the examples to follow were transferred to the \mwsoft\optimatc\mwdata4 data directory when you installed OptiMatch.

System Z0

The system Z0 is the reference impedance used for VSWR calculations. Usually, but not always, it is 50 ohms; it can be set to whatever real value you desire. In an interstage match situation, you would want to set the reference impedance equal to the real part of the complex source impedance.

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