OBRESCHKOFF APPROXIMATION FOR RETARDATION NETWORK
时延网络的奥布列什科夫逼近

The Obreschkoff approximation for a retardation network is carried out. Some analytic formulas of the Obreschkoff approximation and the relationship between these formulas and those of the Bessel approximation are also given. The characteristic, the frequency response and the time response of the Obreschkoff approximation are ana-lyzed. The results obtained show that the Obreschkoff approximation is more accurate than the Bessel approximation for a retardation network. In the end, a typical example is given to varify the above conclusion.