Parameter extraction method for the twisted pair cable with rectangular connectors.
Wei Fang1,2, Yongfeng Ren1, Xin Liu1,3
1National Key Laboratory for Electronic Measurement Technology, North University of China, Taiyuan, Shanxi, China.
Plos One
|October 6, 2018
Summary
A new de-embedding method improves S-parameter measurements for twisted pair cables. This transmission matrix technique enhances cable modeling robustness against measurement disturbances.
Area of Science:
- Electrical Engineering
- Electromagnetics
- Signal Transmission
Background:
- Cables are crucial for energy and information transmission.
- Accurate S-parameter measurement is vital for cable performance analysis.
- Adapters and discontinuities can introduce errors in cable measurements.
Purpose of the Study:
- To propose a de-embedding method for obtaining S-parameters of special twisted pair cables with rectangular connectors.
- To extract cable characteristics using a frequency-dependent RLGC(f) model.
- To compare conventional and modified methods for improved measurement accuracy.
Main Methods:
- A transmission matrix de-embedding method was developed to account for adapter effects.
- Cable characteristics were extracted using a frequency-dependent RLGC(f) model from 10 MHz to 200 MHz.
- Conventional and modified modeling approaches were applied and compared.
Main Results:
- The modified de-embedding method demonstrated reduced errors compared to conventional methods.
- Inherent capacity in the modified method effectively mitigated errors from hyperbolic function discontinuities.
- The proposed method offers improved robustness against measurement disturbances.
Conclusions:
- The developed transmission matrix de-embedding method provides an advantageous modeling approach for twisted pair cables.
- This technique enhances the robustness of S-parameter measurements, particularly against disturbances not eliminated by standard calibration.
- The findings contribute to more reliable characterization of special cables used in signal transmission.
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