Hybrid S-Parameters for Transmission Line Networks With Linear/Nonlinear Load Terminations Subject to Arbitrary Excitations

• Published in: IEEE transactions on microwave theory and techniques Vol. 55; no. 5; pp. 941 - 950
• Main Authors: Bayram, Y., Volakis, J.L.
• Format: Journal Article
• Language: English
• Published: New York, NY IEEE 01.05.2007; Institute of Electrical and Electronics Engineers; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Applied sciences; Bundles; Circuit design; Circuit properties; Design optimization; Design. Technologies. Operation analysis. Testing; Digital simulation; Distributed parameter circuits; Electric potential; Electric, optical and optoelectronic circuits; Electromagnetic analysis; Electromagnetic compatibility; electromagnetic compatibility (EMC); electromagnetic coupling; electromagnetic fields; electromagnetic interference (EMI); Electronic equipment and fabrication. Passive components, printed wiring boards, connectics; Electronics; Exact sciences and technology; Excitation; Information, signal and communications theory; Integrated circuit interconnections; Integrated circuits; Microwave circuits, microwave integrated circuits, microwave transmission lines, submillimeter wave circuits; Microwave propagation; multiconductor transmission lines; Nonlinearity; port analysis; Ports; Power cables; printed circuit board (PCB); Printed circuit boards; Printed circuits; S -parameters; scattering matrix; Scattering parameters; Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices; Studies; Telecommunications and information theory; Terminations; Transmission line matrix methods; transmission line theory; Transmission lines; transmission lines (TLs); Voltage; Wave propagation; Circuit optimization; Circuit design; S-parameters; Electromagnetic compatibility; Linear circuit; Optimal design; Electromagnetic disturbance; Wave coupling; Induced voltage; Networked system; Voltage source; Transmission line; Wave propagation; Non linear load; Electromagnetic interference; s parameter; transmission line theory; Data transmission network; SPICE; transmission lines (TLs); scattering matrix; multiconductor transmission lines; Digital simulation; Printed circuit board; System design; electromagnetic interference (EMI); electromagnetic compatibility (EMC); port analysis; Non linear circuit; Interconnection; electromagnetic fields; Integrated circuit; S matrix; Plane wave; printed circuit board (PCB); electromagnetic coupling; scattering parameters; Printed circuit
• ISSN: 0018-9480; 1557-9670
• DOI: 10.1109/TMTT.2007.895642

We propose a generalized S-parameter analysis for transmission lines (TLs) with linear/nonlinear load terminations subject to arbitrary plane-wave and port excitations. S-parameters are prevalently used to model TLs such as cable bundles and interconnects on printed circuit boards (PCBs) subject to port excitations. The conventional S-parameter approach is well suited to characterize interactions among ports. However, nontraditional port excitations associated with plane-wave coupling to physical ports at TL terminals lead to forced, as well as propagating, modal waves, necessitating a modification of the standard S-parameter characterization. In this paper, we consider external plane-wave excitations, as well as port (internal) sources, and propose a hybrid S-parameter matrix for characterization of the associated microwave network and systems. A key aspect of the approach is to treat the forced waves at the ports as constant voltage sources and induced propagating modal waves as additional entries (hybrid S-parameters) in the S-parameter matrix. The resulting hybrid S-matrix and voltage sources can be subsequently exported to any circuit solver such as HSPICE and Agilent's Advanced Design System for the analysis of combined linear and nonlinear circuit terminations at ports. The proposed method is particularly suited for susceptibility analysis of cable bundles and PCBs for electromagnetic interference evaluations. It also exploits numerical techniques for structural and circuit domain characterization and allows for circuit design optimization without a need to perform any further computational electromagnetic analysis