Publicação

A new time-domain simulation method for highly heterogeneous RF circuits

Detalhes bibliográficos
Resumo:	This paper describes a new time-domain simulation method particularly amenable for highly heterogeneous nonlinear RF circuits as modern wireless transceivers that combine analog RF and both analog and digital base-band circuitry. It uses innovative multi-rate Runge-Kutta algorithms applied to the envelope transient method over a time-domain periodic steady-state technique (shooting), to efficiently resolve strongly nonlinear circuits excited by forcing functions of very distinct time-scales and exhibiting slow (latent) and fast-varying (active) state-variables. Attributing different time-steps to these latent and active state-variables speedup gains of more than 1-to- 7 in simulation time were obtained for even a circuit example of very small size.
Autores principais:	Oliveira, Jorge dos Santos Freitas de
Outros Autores:	Pedro, José Carlos
Assunto:	Nonlinear circuits Nonlinear differential equations Simulation
Ano:	2007
País:	Portugal
Tipo de documento:	documento de conferência
Tipo de acesso:	acesso restrito
Instituição associada:	Instituto Politécnico de Leiria
Idioma:	inglês
Origem:	IC-online

Descrição
Resumo:	This paper describes a new time-domain simulation method particularly amenable for highly heterogeneous nonlinear RF circuits as modern wireless transceivers that combine analog RF and both analog and digital base-band circuitry. It uses innovative multi-rate Runge-Kutta algorithms applied to the envelope transient method over a time-domain periodic steady-state technique (shooting), to efficiently resolve strongly nonlinear circuits excited by forcing functions of very distinct time-scales and exhibiting slow (latent) and fast-varying (active) state-variables. Attributing different time-steps to these latent and active state-variables speedup gains of more than 1-to- 7 in simulation time were obtained for even a circuit example of very small size.