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Modeling and Design Optimization of a Wideband Passive Equalizer on PCB Based on Near-End Crosstalk and Reflections for High-Speed Serial Data Transmission

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6 Author(s)
Eakhwan Song ; Dept. of Electr. Eng. & Comput. Sci., Korea Adv. Inst. of Sci. & Technol., Daejeon, South Korea ; Jeonghyeon Cho ; Jiseong Kim ; Yujeong Shim
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We propose a closed-form analytic model for the newly presented passive equalizer using near-end crosstalk and reflections on printed circuit board (PCB). The proposed model is developed by using impulse response analysis and the Fourier transform. Based on the model, we propose a design-optimization procedure for the passive equalizer, which achieves eye-opening maximization and ISI minimization in order to maximize the equalization performance and reduce the design cycle. In the proposed optimization procedure, the eye-opening is maximized with a parameter sweep and peak distortion analysis, and the ISI is minimized by the proposed negative ISI cancellation technique. The proposed model and the design-optimization procedure are demonstrated experimentally for a data rate of 16 Gb/s on a 40-cm-long backplane PCB, and they achieve wideband equalization with a significant improvement in the voltage and timing margins of the received serial data.

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Electromagnetic Compatibility, IEEE Transactions on  (Volume:52 ,  Issue: 2 )