Enhancing Signal Integrity at Bend Discontinuities in High-speed Differential Lines Based on Dispersion Characteristics of CRLH-TL
- Resource Type
- Conference
- Authors
- Lu, Jiarui; Kayano, Yoshiki
- Source
- 2023 Asia-Pacific Microwave Conference (APMC) Microwave Conference (APMC), 2023 Asia-Pacific. :80-82 Dec, 2023
- Subject
- Aerospace
Bioengineering
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Time-frequency analysis
Power transmission lines
Simulation
Metamaterials
Time-domain analysis
Signal integrity
Dispersion
common-mode noise
CRLH-TL structure
differential signaling
dual bend discontinuities
phase compensation
mixed-mode S-parameters
signal integrity
- Language
A novel technique is explored to improve signal integrity in high-speed differential transmission lines by incorporating a Composite Right/Left-Handed Transmission Line (CRLH-TL) structure. This method aims to mitigate common-mode noise and signal integrity degradation caused by asymmetric bends in differential transmission lines. The primary source of common-mode noise in differential signaling is the phase difference due to length disparities between the inner and outer lines at bend discontinuities. By employing Double Negative (DNG) metamaterial exhibiting a reduced propagation constant, the phase difference can be effectively compensated. The proposed CRLH-TL compensation structure's effectiveness is validated through both frequency and time-domain simulations, demonstrating its proficiency to suppress common-mode noise across a broad frequency band.