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A 0.2V energy-harvesting BLE transmitter with a micropower manager achieving 25% system efficiency at 0dBm output and 5.2nW sleep power in 28nm CMOS Journal article
IEEE Journal of Solid-State Circuits, 2019,Page: 1 - 12
Authors:  Shiheng Yang;  Jun Yin;  Haidong Yi;  Wei-Han Yu;  Pui-In Mak;  Rui P. Martins
Favorite  |  View/Download:8/0  |  Submit date:2019/03/12
Bluetooth Low Energy (Ble)  Cmos  Energy Harvesting  Master-slave Sampling Filter (Mssf)  Micropower Manager (Μpm)  Phase-locked Loop (Pll)  Power Amplifier (Pa)  Power Gating  Transmitter (Tx)  Ultralow-voltage (Ulv)  Voltage-controlled Oscillator (Vco)  
A Comparative Study of 8-Phase Feedforward-Coupling Ring VCOs Journal article
IEEE Transactions on Circuits and Systems II: Express Briefs, 2018
Authors:  Iat-Fai Sun;  Jun Yin;  Pui-In Mak;  Rui P. Martins
Favorite  |  View/Download:4/0  |  Submit date:2019/03/12
8-phase Ring Voltage-controlled Oscillators (Rvco)  Cmos  Feedforward Coupling (Fc)  Phase Noise  Bimodal Oscillation  Clock Generation  Lo Generation  
A High-Voltage-Enabled Class-D Polar PA Using Interactive AM-AM Modulation, Dynamic Matching, and Power-Gating for Average PAE Enhancement Journal article
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2017,Volume: 64,Issue: 11,Page: 2844-2857
Authors:  Yu, Wei-Han;  Peng, Xingqiang;  Mak, Pui-In;  Martins, Rui P.
Favorite  |  View/Download:13/0  |  Submit date:2018/10/30
AA Battery  antenna impedance mismatch  class-D  CMOS  digital AM modulation  dynamic matching network (DMN)  error-vector magnitude (EVM)  inverter chain  leakage current  matching network (MN)  polar  power amplifier (PA)  power-added efficiency (PAE)  power gating  
Limit Cycle Oscillation Reduction for Digital Low Dropout Regulators Journal article
IEEE Transactions on Circuits and Systems II: Express Briefs, 2016,Volume: 63,Issue: 9,Page: 903-907
Authors:  Huang M.;  Lu Y.;  Sin S.-W.;  Seng P.;  Martins R.P.;  Ki W.-H.
Favorite  |  View/Download:7/0  |  Submit date:2019/02/11
Compensation Zero  Describing Function  Digital Control  Feedforward Path  Limit Cycle Oscillation (Lco)  Low Dropout Regulator (Ldo)  Sampled Nonlinear System  
A 0.83-μW QRS detection processor using quadratic spline wavelet transform for wireless ECG acquisition in 0.35-μm CMOS Journal article
IEEE Transactions on Biomedical Circuits and Systems, 2012,Volume: 6,Issue: 6,Page: 586 - 595
Authors:  Chio-In Ieong;  Pui-In Mak;  Chi-Pang Lam;  Cheng Dong;  Mang-I Vai;  Peng-Un Mak;  Sio-Hang Pun;  Feng Wan;  Rui P. Martins
Favorite  |  View/Download:10/0  |  Submit date:2018/10/30
Qrs Detection  Quadratic Spline Wavelet Transform  Wavelet Transform  Wearable Electrocardiograph (Ecg) Device  Wireless Ecg Monitoring  
A DC-offset-compensated, CT/DT hybrid filter with process-insensitive cutoff and low in-band group-delay variation for WLAN receivers Conference paper
IEEE Asia-Pacific Conference on Circuits and Systems, Proceedings, APCCAS, Macao, PEOPLES R CHINA, NOV 30-DEC 03, 2008
Authors:  Un K.-F.;  Mak P.-I.;  Martins R.P.
Favorite  |  View/Download:5/0  |  Submit date:2019/02/11
A power-efficient 1.056 GS/s resolution-switchable 5-bit/6-bit flash ADC for UWB applications Conference paper
Proceedings - IEEE International Symposium on Circuits and Systems, Kos, GREECE, MAY 21-24, 2006
Authors:  Ma J.-X.;  Sin S.-W.;  U S.-P.;  Martins R.P.
Favorite  |  View/Download:4/0  |  Submit date:2019/02/11