Using External Filters To Maintain Sensitivity In Highly Dynamic Measurement Environments

Analyzing and measuring weak radio signals requires high sensitivity, and often necessitates the presence of strong radio signals. Unfortunately, this constraint leads to over modulation of modern measuring receivers and signal analyzers. It is therefore important to be able to recognize in-band and out-of-band interference, which can be done through the use of modulation effects in the form of harmonics and 2^nd order intermodulation products. This application note explains the process of identifying and eliminating in-band and out-of-band interference, as well as how to use external filters in order to maintain high measurement sensitivity. Download the full paper for more information.