Jong-Hyeok Yoon

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This paper describes a low-power 100 Gigabit Ethernet transceiver IC compliant with IEEE802.3ba 100GBASE-LR4 in 40 nm CMOS. The proposed bidirectional full-duplex transceiver IC contains a total of eight 28 Gb/s CDRs. Each CDR lane incorporates phase-rotator-based delay- and phase-locked loop (D/PLL) architecture for enhanced jitter filtering. All the CDR(More)
This paper describes a 10-Gb/s clock-and-data recovery (CDR) with a background optimum loop-bandwidth calibrator. The proposed CDR automatically achieves the minimum-mean-square error between jittery input data and the recovered clock signal by adjusting the bandwidth of a CDR using Kalman filtering theory. A testchip is fabricated in a 0.11 μm CMOS(More)
A DC-to-12.5Gb/s all-rate CDR IC with a single LC VCO is fabricated in 90nm CMOS. Static fractional dividers with an asynchronous phase calibration scheme are employed to generate all-rate clock signals without a phase mismatch or duty cycle distortion. The IC features an automatic loop gain control scheme which adjusts the bandwidth of a CDR automatically(More)
A dual-lane DC-to-12.5 Gb/s all-rate clock and data recovery (CDR) IC with a single LC voltage-controlled oscillator is fabricated in a 90 nm CMOS. An all-rate clock divider with an asynchronous phase calibration scheme is employed to generate all-rate clock signals without a phase mismatch or duty cycle distortion. The IC features an automatic loop gain(More)
A four-parallel 10-Gb/s referenceless-and-masterless phase rotator-based transceiver is presented. Entire lanes operate independently just like the conventional voltage-controlled-oscillator-based parallel referenceless designs while saving power and area. The measured recovered-clock jitter in each lane is 1.24 psrms and the transceiver surpasses the(More)
This paper presents the design of a 6 Gb/s transceiver with a nonlinear electronic dispersion compensator (EDC) for a directly modulated distributed-feedback (DM-DFB) laser. At the laser output, a DM-DFB laser induces power-dependent frequency chirp, which causes severe chromatic dispersion as well as pattern dependency on the received signal. Such(More)
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