An efficient time-domain simulation method for multirate RF nonlinear circuits

Oliveira, Jorge dos Santos Freitas de; Pedro, José Carlos

http://hdl.handle.net/10400.8/66

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Authors

Oliveira, Jorge dos Santos Freitas de

Pedro, José Carlos

Abstract(s)

This paper describes a new computer-aided design tool especially conceived for the efficient time-domain simulation of highly heterogeneous nonlinear wireless communication circuits, i.e., combining RF and baseband analog circuitry and digital components. Using multirate Runge–Kutta algorithms within a multitime framework, to benefit from the different rates of variation of slowly varying (latent) and fast-varying (active) currents and voltages (state variables), we managed to solve the envelope transient regime of circuits excited by AM and PM RF carriers, in a highly efficient way. Indeed, with the adoption of convenient sampling rates for the multiple time representations of the slowly varying and fast-varying state variables, gains of more than one order of magnitude in simulation time are reported, even for an illustrative circuit example of very small size.

Keywords

Nonlinear circuits Nonlinear differential equations Simulation

URI

http://hdl.handle.net/10400.8/66

Citation

OLIVEIRA, Jorge Santos Freitas; PEDRO, José Carlos - An efficient time-domain simulation method for multirate RF nonlinear circuits. IEEE Transactions on Microwave Theory and Techniques. Vol. 55,n.º 11 (Nov. 2007), p. 2384-2392.