H. Herman M. Pang

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In order to improve the robustness of industrial non-square systems with multiple time delays, contrary to omitting the time delays as a model perturbation, a reformative closed-loop gain shaping algorithm (CGSA) was presented using Padé stable approximation of time delays. The algorithm is more precise and concise to design the robust controller. The(More)
A low-jitter charge-pump PLL is built in 90-nm CMOS for 1-10 Gb/s SerDes transmitter clocking. The PLL employs a programmable dual-path loop filter with integrating path and novel resistorless proportional path that can be independently controlled and accurately modeled for flexible setting of closed-loop bandwidth and peaking. Frequency is synthesized(More)
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