![]() ![]() The first one is called the pseudo-wave, an extension of the conventional traveling wave concepts, and is useful when it is necessary to discuss the properties of a microwave network junction irrespective of the impedances connected to the terminals. ![]() Thus, the first objective of this article is to introduce two different types of S-parameters generally used to characterize microwave circuits with lossy characteristic impedance. ![]() These artifacts do not exist when the power wave scattering parameters are used. Also, the expression for the transfer impedance becomes quite complex and not suitable for optimization for maximum power transfer. This is particularly pertinent for antenna problems. The purpose of this article is to demonstrate that the conventional S-parameters cannot be applied to devices having complex characteristic impedances as in some cases the reflection coefficient can be greater than 1 even when terminated by a passive conjugate load for maximum power transfer. ![]()
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