| 摘要 |
A frequency dependent lossy line subcircuit element has a first port (100), a second port (101), and a reference point (102). The lossy line element is configured to represent circuit performance over a band of frequencies. The lossy line element is modeled as a subcircuit comprising a parallel combination network of resistors (11-14), each with an inductor (1-4) in series disposed between the first port (100) and an internal node (103). Inductors (1-4) are proportioned in value relative to each other so as to control the magnitude of the simulated current flow through resistors (11-14) as a function of frequency content of an excitation signal appearing at the first port (100). The subcircuit, therefore, models frequency dependent attenuation for each frequency included in the range. A lossless transmission element (35) is further included in the frequency dependent lossy line subcircuit interposed between the internal node (103) and the second port (101) to represent the lossy line section delay and characteristic impedance of the transmission line. |
