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Overview of Recent Development on Wireless Sensing Circuits and Systems for Healthcare and Biomedical Applications Journal article
IEEE JOURNAL ON EMERGING AND SELECTED TOPICS IN CIRCUITS AND SYSTEMS, 2018,Volume: 8,Issue: 2,Page: 165-177
Authors:  Li, Changzhi;  Un, Ka-Fai;  Mak, Pui-in;  Chen, Ying;  Munoz-Ferreras, Jose-Maria;  Yang, Zhi;  Gomez-Garcia, Roberto
Favorite | View/Download:22/0 | TC[WOS]:7 TC[Scopus]:0 | Submit date:2018/10/30
Non-contact Characterization  Contactless  Noncontact Sensing  Implantable Devices  Radiofrequency Interaction  Wireless Neural Interface  
A 0.7-2.5 GHz, 61% EIRP System Efficiency, Four-Element MIMO TX System Exploiting Integrated Power-Relaxed Power Amplifiers and an Analog Spatial De-Interleaver Journal article
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS, 2018,Volume: 65,Issue: 1,Page: 14-25
Authors:  Yu, Wei-Han;  Un, Ka-Fai;  Mak, Pui-In;  Martins, Rui P.
Favorite | View/Download:19/0 | TC[WOS]:1 TC[Scopus]:0 | Submit date:2018/10/30
Antenna Array  Beamforming  Cmos  Diversity Gain  Error-vector Magnitude (Evm)  Fading Channel  Mobile  Multiple-input Multiple-output (Mimo)  Mimo Decoder  Matching Network (Mn)  Pulse-shaping Filter (Psf)  Power Amplifier (Pa)  Transmitter (Tx)  Signal-to-noise Ratio (Snr)  Wideband  
Time-domain I/Q-LOFT compensator using a simple envelope detector for a sub-GHz IEEE 802.11af WLAN transmitter Conference paper
2016 21st Asia and South Pacific Design Automation Conference (ASP-DAC), Macao, PEOPLES R CHINA, JAN 25-28, 2016
Authors:  Chak-Fong Cheang;  Ka-Fai Un;  Pui-In Mak;  Rui P. Martins
Favorite | View/Download:10/0 | TC[WOS]:0 TC[Scopus]:0 | Submit date:2019/02/11
Wideband driver amplifier Patent
专利类型: 发明专利, 专利号: US9172337B2, 申请日期: 2013-11-06, 公开日期: 2015-10-27
Authors:  Ka-Fai UN;  Pui-In Mak;  Rui Paulo da Silva Martins
Favorite | View/Download:10/0 | TC[WOS]:0 TC[Scopus]:0 | Submit date:2019/03/12
A Sub-GHz wireless transmitter utilizing a multi-class-linearized PA and time-domain wideband-auto I/Q-LOFT calibration for IEEE 802.11af WLAN Journal article
IEEE Transactions on Microwave Theory and Techniques, 2015,Volume: 63,Issue: 10,Page: 3228-3241
Authors:  Ka-Fai Un;  Wei-Han Yu;  Chak-Fong Cheang;  Gengzhen Qi;  Pui-In Mak;  Rui P. Martins
Favorite | View/Download:6/0 | TC[WOS]:5 TC[Scopus]:0 | Submit date:2019/02/11
Adjacent Channel Leakage Ratio (Aclr)  Cmos  Digital Calibration  Gm-c Low-pass Filter  Harmonic Rejection Mixer (Hrm)  Harmonic Rejection Ratio (Hrr)  Ieee 802.11af  Image Rejection Ratio (Irr)  In-phase/quadrature (I/q) Imbalance  Lo Feedthrough (Loft)  Lo-leakage Rejection Ratio (Lrr)  Local Oscillator (Lo)  Power Amplifier (Pa)  Transmitter (Tx)  Wideband  
A Combinatorial Impairment-Compensation Digital Predistorter for a Sub-GHz IEEE 802.11af-WLAN CMOS Transmitter Covering a 10x-Wide RF Bandwidth Journal article
IEEE Transactions on Circuits and Systems I: Regular Papers, 2015,Volume: 62,Issue: 4,Page: 1025-1032
Authors:  Chak-Fong Cheang;  Ka-Fai Un;  Wei-Han Yu;  Pui-In Mak;  Rui P. Martins
Favorite | View/Download:8/0 | TC[WOS]:8 TC[Scopus]:0 | Submit date:2019/02/11
Cmos  Counter-intermodulation (Cim)  Digital Predistortion (Dpd)  Frequency-dependent I/q Imbalance  Power Amplifier (Pa)  Rf  Volterra Series  Wideband Transmitter  
A nonrecursive digital calibration technique for joint elimination of transmitter and receiver I/Q imbalances with minimized add-on hardware Journal article
IEEE Transactions on Circuits and Systems II: Express Briefs, 2013,Volume: 60,Issue: 8,Page: 462-466
Authors:  Wei-Han Yu;  Chak-Fong Cheang;  Pui-In Mak;  Weng-Fai Cheng;  Ka-Fai Un;  U-Wai Lok;  Rui P. Martins
Favorite | View/Download:6/0 | TC[WOS]:6 TC[Scopus]:0 | Submit date:2019/02/11
Algorithm  Calibration  Coordinate Rotation Digital Computer (Cordic)  I/q Imbalance  Local Oscillator (Lo)  Receiver (Rx)  Transceiver  Transmitter (Tx)  
A 53-to-75-mW, 59.3-dB HRR, TV-band white-space transmitter using a low-frequency reference LO in 65-nm CMOS Journal article
IEEE Journal of Solid-State Circuits, 2013,Volume: 48,Issue: 9,Page: 2078-2089
Authors:  Ka-Fai Un;  Pui-In Mak;  Rui P. Martins
Favorite | View/Download:6/0 | TC[WOS]:8 TC[Scopus]:0 | Submit date:2019/02/11
Cmos  Harmonic Rejection  Multiphase Local Oscillator (Lo) Generator  Ofdm  Passive Filter  White Space Applications  Wideband  Wireless Transmitter  
A wideband multi-stage inverter-based driver amplifier for IEEE 802.22 WRAN transmitters Conference paper
Fifth Asia Symposium on Quality Electronic Design (ASQED 2013), Penang, Malaysia, 26-28 Aug. 2013
Authors:  Geng-Zhen Qi;  Ka-Fai Un;  Wei-Han Yu;  Pui-In Mak;  Rui P. Martins
Favorite | View/Download:8/0 | TC[WOS]:0 TC[Scopus]:0 | Submit date:2019/02/11
Da  Imd3  Inverter-based  Linearity  Sweet Spot  Wideband  Wran Transmitters  
Analysis and design of open-loop multiphase local-oscillator generator for wireless applications Journal article
IEEE Transactions on Circuits and Systems I: Regular Papers, 2010,Volume: 57,Issue: 5,Page: 970-981
Authors:  Ka-Fai Un;  Pui-In Mak;  Rui P. Martins
Favorite | View/Download:7/0 | TC[WOS]:12 TC[Scopus]:0 | Submit date:2019/02/11
Cmos  Harmonic-reject Mixer  Image-reject Mixer  Mobile-tv Tuner  Multiphase Local-oscillator (Lo) Generator  Phase-locked Loop (Pll)  Radio Frequency (Rf)  Voltage-controlled Oscillator (Vco)