A transmission line simulator for GaAs integrated circuits

A simulator named “TLSIM is described in this paper. TLSIM simulates GaAs circuits considering the interconnects as transmission lines. The simulator provides a simplistic way of updating signals at circuit nodes. The simulation method is applicable to general graph topologies for interconnects. The behavior of signal flow at transmission line junctions and at the active circuit interfaces is captured by the application of Kirchoff‘s current equations. Coupling among conductors and loss in transmission lines are discussed. Results on run time and accuracy are presented for GaAs direct coupled FET logic (DCFL) circuits.