Scaling of linear time-varying networks, passivity, and losslessness

The effect on the individual elements of a linear time-varying network resulting from multiplying its nonanticipatory impedance by a function is considered. Conditions on the multiplying function to conserve passivity and/or losslessness are found. Although the impedance considered in this paper will represent a one-port network, most of the results obtained can be easily extended to -ports.