POWER MICROWAVE SENSOR ON PARTIALLY FILLED RECTANGULAR WAVEGUIDES BY DIELECTRIC

Abstract

In automatic power stabilization systems the functions of the measuring element are performed by a power sensor. It is proposed to implement the microwave module receiver paths for a number of mobile radio engineering systems on partially filled waveguides by dielectric. The output power in the microwave range is one of the most important parameters of microwave signal sources and amplifiers, microwave transmitting paths and radioengineering systems of various purposes in general. The ability to use a microwave signal source depends on the level of microwave output power. In radar stations, groundbased microwave telecommunication stations and satellite transmission systems the microwave transmitter power determines the range of the system. The article presents the schemes of the microwave transmission path of a digital troposcatter station and the design of a microwave power sensor on a waveguide partially filled by dielectric. Since there are microwave radiosystems, including digital troposcatter stations, operating in several frequency subranges, it is not necessary to approximate the entire range with orthogonal polynomials of equalwave nature. The article suggests that for such microwave radio systems it is more appropriate to use Legendre orthogonal polynomials and Gegenbauer orthogonal polynomials. The calculated data are shown in the form of graphs, where the mapping coefficients obtained from fourth- and fifthorder polynomials are compared. The conclusions of the article indicate that such microwave power sensors can be used in a nodal digital troposcatter station, a highspeed digital troposcatter station and in combined digital troposcatter stations.