Title :
A new steady-state analysis method for RF-IC circuits driven by multi-tone signals
Author :
Iordache, Marius ; Dumitriu, Lucia ; Constantinescu, Florin ; Nitescu, Miruna
Author_Institution :
Dept. of Electr. Eng., Politehnica Univ. of Bucharest
Abstract :
The paper presents a new version of the modified nodal method for analysis of the circuits with widely separated time scales. The key idea is to use multiple time variables, which enable signals with widely separated rates of variation to be represented efficiently. The differential algebraic equations (DAEs) describing the RF-IC circuits are transformed into multi-time partial differential equations (MPDEs). In order to solve MPDEs we use the associated resistive discrete equivalent circuits (companion circuits) for the dynamic circuit elements. The algorithm to formulate and to solve the dynamic modified nodal equations was implemented in a computing program, which constitutes a useful tool for steady-state analysis of a very large class of nonlinear analog circuits
Keywords :
analogue integrated circuits; nonlinear network analysis; partial differential equations; radiofrequency integrated circuits; differential algebraic equations; dynamic circuit elements; multitime partial differential equations; nodal equations; nonlinear analog circuits; resistive discrete equivalent circuits; Algorithm design and analysis; Analog computers; Circuit analysis; Circuit analysis computing; Differential algebraic equations; Equivalent circuits; Nonlinear equations; Partial differential equations; Signal analysis; Steady-state;
Conference_Titel :
Circuits and Systems, 2006. ISCAS 2006. Proceedings. 2006 IEEE International Symposium on
Conference_Location :
Island of Kos
Print_ISBN :
0-7803-9389-9
DOI :
10.1109/ISCAS.2006.1693095
