Vias in differential transmission lines have been modeled using the finite-difference time-domain (FDTD) method. The velocity that the differential signal propagated through the vias was estimated. Differential S-parameters were calculated up to 50 GHz. Below 10 GHz, the differential signal can propagate through vias without much reflection and distortion. However, as frequency increases, the reflection from the vias and the loss of differential power become significant.

Meeting Name

IEEE 10th Topical Meeting on Electrical Performance of Electronic Packaging (2001: Oct. 22-31, Cambridge, MA)


Electrical and Computer Engineering

Research Center/Lab(s)

Electromagnetic Compatibility (EMC) Laboratory

Keywords and Phrases

S-Parameters; Finite Difference Time-Domain Analysis; High-Frequency Transmission Lines; Signals; Transmission Line Theory; Computational Methods; Electric Impedance; Electromagnetic Wave Propagation; Electromagnetic Wave Reflection; Finite Difference Method; Frequencies; Microstrip Lines; Permittivity; Scattering Parameters; Substrates; Time Domain Analysis; Transmission Line Theory; Differential Signal; Differential Transmission Line; Finite-Difference Time-Domain Method; Electromagnetic Field Effects

International Standard Book Number (ISBN)


Document Type

Article - Conference proceedings

Document Version

Final Version

File Type





© 2001 Institute of Electrical and Electronics Engineers (IEEE), All rights reserved.

Publication Date

01 Oct 2001