Title :
Generalized analytical model for the design of irregularly shaped power planes and passives in mixed signal applications
Author :
McFiggins, Jeffrey ; Yvanoff, Marie ; Venkataraman, Jayanti
Author_Institution :
Rochester Inst. of Technol., NY, USA
fDate :
31 Aug.-3 Sept. 2004
Abstract :
This work presents a generalized analytical method to obtain the S and Z matrices for irregular shaped planar resonant structures commonly found in mixed signal circuits. The method is based on a segmentation technique that uses an interconnect matrix in conjunction with a cavity model where resonant modes are predicted accurately through closed form expressions. The analytical formulation is very versatile and can be applied to both digital and RF circuitry. Typical structures such as the L-shaped power plane, rectangular ring power plane and rectangular coil inductor are considered where the S and Z matrices have been compared with published literature and full wave solvers. In all cases, there is excellent agreement. A design methodology has been developed to shape the power planes so that no resonances occur within the frequency range of interest. In the case of inductors, a similar design methodology can be developed where a physical layout is obtained for a required inductance value.
Keywords :
inductors; integrated circuit design; integrated circuit interconnections; integrated circuit modelling; mixed analogue-digital integrated circuits; L-shaped power plane; RF circuitry; S matrix; Z matrix; cavity model; digital circuitry; interconnect matrix; irregularly shaped power planes; mixed signal circuits; planar resonant structure; rectangular coil inductor; rectangular ring power plane; resonant modes; segmentation technique; Analytical models; Design methodology; Inductors; Integrated circuit interconnections; Predictive models; RLC circuits; Resonance; Signal analysis; Signal design; Transmission line matrix methods;
Conference_Titel :
Digital System Design, 2004. DSD 2004. Euromicro Symposium on
Print_ISBN :
0-7695-2203-3
DOI :
10.1109/DSD.2004.1333277