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Chen, Y. (author), Liu, Yao-Hong (author), Zong, Z. (author), Dijkhuis, Johan (author), Dolmans, Guido (author), Staszewski, R.B. (author), Babaie, M. (author)
In this paper, we propose a method to suppress supply pushing of an LC oscillator such that it may directly operate from a switched-mode dc-dc converter generating fairly large ripples. A ripple replication block (RRB) generates an amplified ripple replica at the gate terminal of the tail current source to stabilize the oscillator's tail...
journal article 2019
document
Zong, Z. (author), Chen, Peng (author), Staszewski, R.B. (author)
) regions while minimizing its power consumption. The digitally controlled oscillator (DCO) fundamentally resonates at 20 GHz and co-generates a strong...
journal article 2019
document
Chen, Peng (author), Huang, Xiongchuan (author), Chen, Y. (author), Wu, Lianbo (author), Staszewski, R.B. (author)
To characterize an on-chip programmable delay in a low-cost and high-resolution manner, a built-in self-test based on a first-order ΔΣ time-to-digital converter with self-calibration is proposed and implemented in TSMC 28-nm CMOS. The system is self-contained, and only one digital clock is needed for the measurements. A...
journal article 2018
document
Kuo, Feng-Wei (author), Babaie, M. (author), Chen, Huan-Neng (Ron) (author), Cho, Lan-Chou (author), Jou, Chewn-Pu (author), Chen, Mark (author), Staszewski, R.B. (author)
We propose a time-predictive architecture of an all-digital PLL (ADPLL) for cellular radios, which is optimized for advanced CMOS. It is based on a 1/8-length time-to-digital converter (TDC) of stabilized 7-ps resolution, as well as wide tuning range, and fine-resolution class-F digitally controlled oscillator (DCO) with only switchable metal...
journal article 2018
document
Kuo, Feng-Wei (author), Binsfeld Ferreira, S. (author), Chen, Huan-Neng (Ron) (author), Cho, Lan-Chou (author), Jou, Chewn-Pu (author), Hsueh, F.L. (author), Madadi, I. (author), Tohidian, M. (author), Shahmohammadi, M. (author), Babaie, M. (author), Staszewski, R.B. (author)
...
journal article 2017
document
Babaie, M. (author), Kuo, Feng-Wei (author), Chen, H (author), Cho, Lan-Chou (author), Jou, Chewn-Pu (author), Hsueh, F.L. (author), Shahmohammadi, M. (author), Staszewski, R.B. (author)
We propose a new transmitter architecture for ultra-low power radios in which the most energy-hungry RF circuits operate at a supply just above a threshold voltage of CMOS transistors. An all-digital PLL employs a digitally controlled oscillator with switching current sources to reduce supply voltage and power without sacrificing its startup...
journal article 2016
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