TY - GEN
T1 - Suppression of Mode Conversion Due to Asymmetric Geometry of Dense Parallel Traces in Differential-Transmission Lines
AU - Takeuchi, Tomoya
AU - Iokibe, Kengo
AU - Toyota, Yoshitaka
N1 - Funding Information:
ACKNOWLEDGMENTS This work was partially supported by JSPS KAKENHI Grant Number 16H04318.
Publisher Copyright:
© 2020 IEEE.
PY - 2020/9/23
Y1 - 2020/9/23
N2 - Symmetry is important for differential-transmission lines, but the dense parallel traces easily break the symmetry due to coupling with the adjacent conductor, leading to mode conversion. We propose an asymmetric geometry of differential-transmission lines placed on the side of a nonadjacent conductor to suppress mode conversion and maintain signal integrity in the cases of loosely coupled and tightly coupled parallel traces. By designing the asymmetric geometry of dense differential-transmission lines by taking into account coupling with the adjacent conductor, mode conversion was successfully suppressed by decreasing the line width on the side of the non-adjacent conductor. It was also found that the asymmetric geometry can suppress mode conversion and maintain signal integrity in tightly coupled parallel traces. In loosely coupled parallel traces, on the other hand, the tightly coupled asymmetrically tapered bend we previously proposed suppresses mode conversion.
AB - Symmetry is important for differential-transmission lines, but the dense parallel traces easily break the symmetry due to coupling with the adjacent conductor, leading to mode conversion. We propose an asymmetric geometry of differential-transmission lines placed on the side of a nonadjacent conductor to suppress mode conversion and maintain signal integrity in the cases of loosely coupled and tightly coupled parallel traces. By designing the asymmetric geometry of dense differential-transmission lines by taking into account coupling with the adjacent conductor, mode conversion was successfully suppressed by decreasing the line width on the side of the non-adjacent conductor. It was also found that the asymmetric geometry can suppress mode conversion and maintain signal integrity in tightly coupled parallel traces. In loosely coupled parallel traces, on the other hand, the tightly coupled asymmetrically tapered bend we previously proposed suppresses mode conversion.
KW - asymmetric geometry
KW - dense parallel traces
KW - differential-transmission lines
KW - mixed-mode S parameters
KW - mode conversion
UR - http://www.scopus.com/inward/record.url?scp=85097169478&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=85097169478&partnerID=8YFLogxK
U2 - 10.1109/EMCEUROPE48519.2020.9245880
DO - 10.1109/EMCEUROPE48519.2020.9245880
M3 - Conference contribution
AN - SCOPUS:85097169478
T3 - Proceedings of the 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC EUROPE 2020
BT - Proceedings of the 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC EUROPE 2020
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2020 International Symposium on Electromagnetic Compatibility - EMC EUROPE, EMC EUROPE 2020
Y2 - 23 September 2020 through 25 September 2020
ER -