Local Area Improvement of GSM Network Coverage

This article describes the design of a local GSM signal amplifying system and presents the results of appliance performance measurements, simulations and analyses. The system consists of a receiving antenna of the Yagi type, a 50 Ω cable, a 0.5–1.5 GHz wideband RF amplifier and a transmitting antenna. A precise measurement of the S-parameters of each component is performed and recorded in the appropriate S-matrix data file format. The amplifying system is first realized in a Keysight Genesys programming simulation platform with S-models, created based on the measured data. That schematic is simulated and optimized by calculating additional impedance-matching circuits included in the initial schematic design.