Model Study of Transmission Line Transformers

This report presents a model study of broadband transmission line transformers in frequency responses of the used ferrite toroidal cores 10÷200 MHz and 0,5÷30 MHz with coefficient of resistant ratio 1:1. Two models are shown as a lumped equivalent circuit of the broadband transmission line transformer and their model parameters have been calculated. It is determined the influence of the model parameter values on amplitudefrequency responses and qualitative parameters. The models can be used in carrying out simulation studies of circuits in radiocommunications.