Szukana fraza: [Abstract = "The main subject of the paper is the description and determination of the impedance operator of a linear periodically time\-varying \(LPTV\) one\-port network in the steady\-state. If the one\-port network parameters and the supply vary periodically with the same period, the network reaches a periodic steady state. However, the sinusoidal supply may induce a nonsinusoidal voltage or current."]

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