Part 4 overviews various instrumentation for measuring RF and microwave power, including spectrum analyzers, microwave receivers, network/spectrum analyzers, and the most accurate method, power sensors/meters. It begins with the unknown signal, of arbitrary modulation format, and draws application-oriented comparisons for selection of the best instrumentation technology and products. Most of the chapter is devoted to the most accurate method, power meters
and sensors. It includes comprehensive selection guides,frequency coverages, contrasting accuracy and dynamic performance to pulsed and complex digital modulations. These are especially crucial now with the advances in wireless communications formats and their statistical measurement needs.