Episode 41 - S-parameter Measurements
In this episode we go over some basics S-parameter measurement. These include a description of a type of directional coupler, the basic concept of how to represent a reflectometer as a two-port device, and finally how to calibrate the associated model parameters using an open short and load. The measurements of a two-port device are then briefly discussed, by adding a through measurement to the calibration. Isolation terms in the calibration are not discussed.
This episode has a few mistakes in it, but those were basically corrected by putting notations on the video. I didn’t want to reshoot a third time to correct them. This episode is heavy on the mathematics of reflectometer calibration, and gives approximate calibration equations that one could use if they wanted to construct their own reflectometer. What is not covered is that there are some problems that need to be considered. The main idea shown here is that it is possible to compensate for errors in a reflectometer or network analyzer with some simple measurements of an open, short, and load.
The following course has been added to the course catalog
This is the fourth of a series of four courses on MIL-STD-461 measurements. The topic of this course is radiated susceptibility, or RS measurements.
