Title :
A reduced-order scheme for coupled lumped-distributed interconnect simulation
Author :
Lu, Ninglong ; Hajj, Ibrahim N.
Author_Institution :
Dept. of Electr. & Comput. Eng., Illinois Univ., Urbana, IL, USA
Abstract :
In this paper, we present a reduced-order modeling scheme for coupled distributed RLCG interconnect models. The scheme relies on decomposing each distributed line into a series of uncoupled distributed lines and the coupling is modeled by lumped coupling capacitances. The individual uncoupled lines are then represented by a finite number of poles and zeros that are computed analytically. The method has been applied to the modeling of uniform/nonuniform, identical/nonidentical lines, and has been incorporated into a simulator for the analysis of MOS circuits with RLCG transmission line interconnect models. The SWEC algorithm is used to model the transistor and recursive convolution is applied to compute the response. Examples show that the simulator produces accurate results compared to SPICE, with two to three order reduction in computational time
Keywords :
CMOS integrated circuits; RC circuits; SPICE; circuit simulation; coupled circuits; distributed parameter networks; integrated circuit interconnections; integrated circuit modelling; lumped parameter networks; poles and zeros; MOS circuits; SPICE; SWEC algorithm; computational time; coupled lumped-distributed interconnect simulation; distributed RLCG interconnect models; lumped coupling capacitances; poles; recursive convolution; reduced-order scheme; uncoupled distributed lines; zeros; Analytical models; Capacitance; Circuit analysis; Circuit simulation; Computational modeling; Convolution; Coupling circuits; Distributed parameter circuits; Integrated circuit interconnections; Poles and zeros;
Conference_Titel :
Circuits and Systems, 1999. ISCAS '99. Proceedings of the 1999 IEEE International Symposium on
Conference_Location :
Orlando, FL
Print_ISBN :
0-7803-5471-0
DOI :
10.1109/ISCAS.1999.780142
