TY - JOUR
T1 - Multimodal circuit model for the analysis of asymmetric shunt impedance transitions
AU - Rodriguez-Cepeda, Pablo
AU - Ribo, Miquel
AU - Pajares, Francisco Javier
AU - Regue, Joan Ramon
AU - Sanchez, Albert Miquel
AU - Perez, Antonio
N1 - Publisher Copyright:
© 2008 IEEE.
PY - 2008
Y1 - 2008
N2 - In PCB circuits, signal traces are often routed close to other signal traces. This situation originates the appearance of coupled strip sections. Due to the fact that coupled strip sections behave as multimodal transmission lines, several electromagnetic modes propagate simultaneously. Any asymmetry in the circuit will generate an energy exchange among the propagating modes which will lead to signal integrity problems. In this paper, a new multimodal circuit model for a Three-Line-Microstrip Asymmetric Shunt Impedance Transition is presented. The model allows a rigorous and a quantitative analysis of the transition. The model is successfully applied to the analysis of a PCB configuration where a clock signal trace is routed close to two other signal traces. The good agreement between measurements and circuit simulations validates the proposed multimodal circuit model.
AB - In PCB circuits, signal traces are often routed close to other signal traces. This situation originates the appearance of coupled strip sections. Due to the fact that coupled strip sections behave as multimodal transmission lines, several electromagnetic modes propagate simultaneously. Any asymmetry in the circuit will generate an energy exchange among the propagating modes which will lead to signal integrity problems. In this paper, a new multimodal circuit model for a Three-Line-Microstrip Asymmetric Shunt Impedance Transition is presented. The model allows a rigorous and a quantitative analysis of the transition. The model is successfully applied to the analysis of a PCB configuration where a clock signal trace is routed close to two other signal traces. The good agreement between measurements and circuit simulations validates the proposed multimodal circuit model.
KW - Asymmetric shunt impedance
KW - Clock signal trace
KW - Coupled-strip sections
KW - Multiomodal transmission line
KW - Mutimodal circuit model
KW - PCB routing
KW - Signal integrity
UR - http://www.scopus.com/inward/record.url?scp=77952174476&partnerID=8YFLogxK
U2 - 10.1109/ISEMC.2008.4652056
DO - 10.1109/ISEMC.2008.4652056
M3 - Conference article
AN - SCOPUS:77952174476
SN - 1077-4076
VL - 2008-January
JO - IEEE International Symposium on Electromagnetic Compatibility
JF - IEEE International Symposium on Electromagnetic Compatibility
M1 - 4652056
T2 - 2008 IEEE International Symposium on Electromagnetic Compatibility, EMC 2008
Y2 - 18 August 2008 through 22 August 2008
ER -