These seminar notes give a good discussion of the principles of phase noise. Specifically the authors describe the difference between measuring phase noise directly or using phase/frequency demodulation techniques. The notes describe details about the limitations and equipment performance requirements for making phase noise measurements using a variety of techniques. Since these notes are from an older archive, the latest techniques involving the use of correlation are not described.

Logarithmic amplifiers provide an output voltage that is logarithmically scaled relative to the amplitude envelope of the input signal. Historically these have been used to provide logarithmic Y-axis scaling to spectrum analyzer displays, for example. This app note describes the basic block diagram and principles of operation of a log amplifier.

This connector identifier guide features schematic drawings of over 50 different connector types in each gender. The guide also features a chart comparing the maximum frequency capability of each type. A small glossary of RF terms is also included.

These presentation notes describe some best practices and potential pitfalls of using "lab" versus "general" precision connectors in your testing environment. In this paper, "lab" precision generally refers to the air-dielectric 3.5-mm and 2.92-mm connectors, while "general" precision refers to SMA-style connectors.

This application note discusses the use of SMA connectors in the lab, along with their performance when mated to APC 3.5mm connectors.