Application of the Autocompensation Principle to Improve the Noise Characteristics of Signal Generators in Wireless Communication Systems

Abstract

Flying ad-hoc networks (FANET) based on unmanned aerial vehicles (UAVs) and ground control systems is a convenient tool to collect data on the state of resources of agricultural facilities. Increasing the effectiveness of such network causes a need for new design of its radio transmitting equipment. Signal generators of radio transmitters of flying sensor networks and their spectral characteristics have been considered. In order to improve their spectral characteristics, the autocompensation principle has been applied. Block diagram and equivalent functional model of a carrier oscillator with automatic noise compensation have been shown. Transfer functions of the scheme for phase deviations of its various blocks have been obtained. Simulation had shown that the maximum degree of noise autocompensation reaches 13 dB, which confirms the effectiveness of the proposed approach.