RF Electronics Chapter 2: Computer Simulation Page 46
2022, C. J. Kikkert, James Cook University, ISBN 978-0-6486803-9-0.
Figure 2.57. Impedance phase comparison after optimisation.
Figure 2.58. Bandpass T Matching network model after optimisation.
Both the magnitude and the phase response of the calculated circuit and the model match
exactly. The components and their Q values of the circuit model, after optimisation are
shown in figure 2.58 and exactly match the component values of the Bandpass T network
of figure 2.45, showing that we have perfectly modelled the circuit from impedance
measurements only.
One application of this technique is the modelling of mains power transformers for use at
50 kHz to 150 kHz Power Line Carrier (PLC) frequencies. This technique was
successfully applied to single-phase transformers and three phase transformers to allow
low cost coupling networks, to couple the PLC signals onto the High Voltage power lines
to be designed. These coupling networks rely on the transformer circuit model developed
using this technique for part of the coupling network [9, 27].
RF Electronics: Design and Simulation
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