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Optimal Design Methodology for Frequency Compensation Circuits in Logging Cable Transmission Channel.
- Source :
- Journal of Circuits, Systems & Computers; Jun2018, Vol. 27 Issue 7, p-1, 17p
- Publication Year :
- 2018
-
Abstract
- Bandwidth limitation is a vital problem for high-speed data transmission in logging cable telemetry systems (LCTSs). This paper proposes a frequency compensation method with an analog circuit design, possessing high flexibility and robustness. Analytical expressions are derived for the relationship between pole-zero and gain, deviations caused by high temperature; and are then verified via simulation. To address the efficacy of the circuit design, a real case with low computation complexity and high accuracy is proposed and employed. The case of a 7km LCTS shows frequency compensation with a 200% bandwidth expansion - from 160kHz at 55dB of the original cable to 300kHz at 3dB - and a 60dB improvement in high frequency gain. After comparing the signals with and without compensation, the improvements in transmission performance by the proposed pre-emphasis circuit and equalizer are confirmed. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 02181266
- Volume :
- 27
- Issue :
- 7
- Database :
- Complementary Index
- Journal :
- Journal of Circuits, Systems & Computers
- Publication Type :
- Academic Journal
- Accession number :
- 128672030
- Full Text :
- https://doi.org/10.1142/S0218126618501037