The impact of a nonideal return path on differential signalintegrity |
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Authors: | Fornberg P.E. Kanda M. Lasek C. Piket-May M. Hall S.H. |
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Affiliation: | Dept. of Electr. & Comput. Eng., Colorado Univ., Boulder, CO; |
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Abstract: | Printed circuit board transmission lines propagating high-speed digital signals are susceptible to nonideal return paths which may affect signal integrity. In an attempt to clarify this complex issue, this paper presents a study of differential signal integrity issues for the familiar situation in which two coupled microstrip traces are in close proximity to a common reference plane. Differential signaling on coupled microstrip lines and stripline configurations are investigated. Finite-difference time domain simulations are used to demonstrate the impact a nonideal return path can have on differential signal integrity |
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