  This article presents pedagogical explanation of retrieving the resonance
parameters $Q_{L}$, $Q_{o}$ and $Q_{c}$ from both reflection and transmission
measurement of microwave resonator. Here $Q_{L}$ stands for the total or loaded
quality factor (Q), $Q_{o}$ is the internal Q and $Q_{c}$ is the coupling or
external Q. Matlab Code based on the methods is available for download for
direct calculation of the Qs.\cite{lighq}
