Numerical analysis of AC losses in transmission lines composed of round wires

An accurate numerical analysis is presented for the AC effective resistance and the inductance of imperfectly conducting wire transmission lines. The number and the allocation of the wires are arbitrary. The analysis is based on integral equations combined with the moment method. The numerical results are shown for the resistance and inductance of two-wire and three-wire lines. The present technique is also applied to microstrip lines and obtained good agreement with the results by other methods.