Analysing of GSM Signals by Means of IFM Receiver

This article concerns application of instantaneous frequency measurement IFM receiver for monitoring of telecommunication signals. The investigations were performed with the aid of two microwave frequency discriminators MFD built in microstrip technique. The experimental kit enabled to measure of parameters of the mobile phones' and GSM base station's signals. Such information is very useful, for instance, for quick control of operation correctness of telecommunication and other microwave devices.