Abstract
With the increase of signal rate, differential interconnection becomes more and more widely used. However, when the differential pair is asymmetric in layout, e.g., bending lines, common mode noise will be produced in the circuit, which may further cause EMI problems. In this paper, an efficient method, i.e., combing a U-shaped complementary open loop defective ground structure (DGS) with adding slow wave structure at the inner bending line, is proposed to suppress the differential-to-common mode conversion and common-mode noise of right-angle bend discontinuity for differential signaling. The simulation results show that the mode conversion can be reduced to less than-50dB in the bandwidth from DC to 16GHz. Moreover, the common mode noise is also significantly suppressed.
Recommended Citation
L. Zhang et al., "A U-shaped Complementary Open Loop Defective Ground Structure with Slow Wave Structure for Mode Conversion and Common Mode Noise Suppression," 2020 IEEE Asia-Pacific Conference on Antennas and Propagation, APCAP 2020 - Proceedings, article no. 9246118, Institute of Electrical and Electronics Engineers, Aug 2020.
The definitive version is available at https://doi.org/10.1109/APCAP50217.2020.9246118
Department(s)
Electrical and Computer Engineering
Keywords and Phrases
Common mode suppression; Defective ground structure; Differential interconnection; Mode conversion; Slow wave structure
International Standard Book Number (ISBN)
978-172819805-7
Document Type
Article - Conference proceedings
Document Version
Citation
File Type
text
Language(s)
English
Rights
© 2024 Institute of Electrical and Electronics Engineers, All rights reserved.
Publication Date
04 Aug 2020
Comments
Intel Corporation, Grant 19zx7156