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 2nd 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.
This aplication note offers two solutions to dealing with abruptly jumps -- up or down -- in oscillator frequency, causing a lost PLL lock or a variety of other system-related problems.
Near Field Communication (NFC) is a new short-range, standards-based wireless connectivity technology, that uses magnetic field induction to enable communication between electronic devices in close proximity. By Rohde & Schwarz
This application note explains how to better ensure proper performance in a vehicle’s electronic safety system through the use of wideband radio communications testers to emulate cellular networks in a lab setting.