MIT Terahertz Integrated Electronics Group -- Professor Ruonan Han

Xibi Chen

Xibi Chen (xibichen@mit.edu) is a PhD student at Terahertz Integrated Electronics Group, Microsystem Technology Laboratories (MTL), Department of Electrical Engineering and Computer Science (EECS), Massachusetts Institute of Technology (MIT). He received his B.S. and M.S. degrees from Department of Electronic Engineering, Tsinghua University, Beijing, China, in 2017 and 2020, respectively. He was a Research Assistant at Microwave and Antenna Institute, Department of Electronic Engineering, Tsinghua University, from 2015 to 2020.

AWARDS & Honors

2022 ISSCC Student Travel Grant Award
2022 Analog Devices Outstanding Student Designer Award
2020 Outstanding Graduate Student Award of Tsinghua University
2020 Master Thesis Award of Tsinghua University
2018 Best Student Paper Award of International ACES Symposium
2017 ”Future Scholar” Graduate Fellowship of Tsinghua University
2017 Outstanding Undergraduate Student Award of Tsinghua University
2017 Bachelor Thesis Award of Tsinghua University
2014-2016 Scholarship of Academic Excellence of Tsinghua University
2014 Second Award of University Students Physics Competition in China

PUBLICATIONS

X. Chen, M. I. W. Khan, X. Yi, X. Li, W. Chen, J. Zhu, Y. Yang, K. E. Kolodziej, N. M. Monroe, R. Han, ”A 140GHz Transceiver with Integrated Antenna, Inherent-Low-Loss Duplexing and Adaptive Self-Interference Cancellation for FMCW Monostatic Radar”, IEEE Intl. Solid-State Circuit Conf. (ISSCC), San Francisco, CA, Feb. 2022.
N. M. Monroe, G. C. Dogiamis, R. Stingel, P. Myers, X. Chen and R. Han, ”Electronic THz Pencil Beam Forming and 2D Steering for High Angular-Resolution Operation: A 98×98 Unit, 265GHz CMOS Reflectarray with In-Unit Digital Beam Shaping and Squint Correction”, IEEE Intl. Solid-State Circuit Conf. (ISSCC), San Francisco, CA, Feb. 2022.
X. Yi, C. Wang, X. Chen, J. Wang, J. Grajal and R. Han, ”A 220-to-320-GHz FMCW Radar in 65-nm CMOS Using a Frequency-Comb Architecture,” in IEEE Journal of Solid-State Circuits, vol. 56, no. 2, pp. 327-339, Feb. 2021.
X. Chen, F. Yang, M. Li and S. Xu, “Analysis of Nonlinear Metallic Metasurface Elements Using Maxwell-Hydrodynamic Model with Time-Domain Perturbation Method,” in IEEE Transactions on Antennas and Propagation, vol. 68, No. 3, pp. 2213-2223, Mar. 2020.
X. Chen and F. Yang, “Harmonic-Modulated Nonlinear Metasurface Based on Generalized Phase Conjugation Principle”, IEEE International Symposium on Antennas and Propagation & USNC-URSI Radio Science Meeting, Jul. 2019.
X. Chen, F. Yang, M. Li, S. Xu, “FDTD Solver with Time-Domain Perturbation Method for Simulating An All-Optical Switch Realized by Nonlinear Metasurface”, International Applied Computational Electromagnetics Society (ACES) Symposium, Aug. 2018.
X. Chen, F. Yang, M. Li, S. Xu, “A Study of Second-Harmonic Generation in Semiconductor Layer Using FDTD Method with Hydrodynamic Nonlinear Drude Model”, International Applied Computational Electromagnetics Society (ACES) Symposium, Aug. 2017.
H. Zhang, X. Chen, M. Li, F. Yang and S. Xu, “A Compact Dual-Band Folded-Cavity Antenna for Microwave Biomedical Imaging Applications,” IEEE International Conference on Computational Electromagnetics, Mar. 2019.
H. Yang, X. Chen, F. Yang, S. Xu, X. Cao, M. Li, J. Gao, “Design of Resistor-Loaded Reflectarray Elements for Both Amplitude and Phase Control,” in IEEE Antennas and Wireless Propagation Letters, vol. 16, pp. 1159-1162, May 2017.
H. Yang, F. Yang, X. Cao, S. Xu, J. Gao, X. Chen, M. Li, T. Li, “A 1600-Element Dual-Frequency Electronically Reconfigurable Reflectarray at X/Ku-Band,” in IEEE Transactions on Antennas and Propagation, vol. 65, no. 6, pp. 3024-3032, Jun. 2017.
H. Yang, X. Cao, F. Yang, J. Gao, S. Xu, M. Li, X. Chen, Y. Zhao, Y. Zheng and S. Li, “A programmable metasurface with dynamic polarization, scattering and focusing control,” in Scientific Reports, Oct. 2016.
F. Yang, Y. Rahmat-Samii, X. Chen, X. Zhang, and H. Xu, “Appendix: Representative Literature Review on Surface Electromagnetics,” in Surface Electromagnetics, edited by Fan Yang and Yahya Rahmat-Samii, Cambridge Press, Jun. 2019.

Zhi Hu

http://www.mit.edu/~zhihu/

Zhi Hu (zhihu@mit.edu) received his B.S. degree in microelectronics from Fudan University in 2015. Currently as a graduate student at MIT he is exploring creative ways to develop circuits and systems in the terahertz range.

Xiang Yi

Xiang Yi (S’11–M’13) (xiangyi@mit.edu) received the B.E. degree, M.S. degree and Ph.D. degree from Huazhong University of Science & Technology (HUST) in 2006, South China University of Technology (SCUT) in 2009, Nanyang Technological University (NTU) in 2014, respectively.
He was a Postdoctoral Associate in Massachusetts Institute of Technology (MIT). He was a Research Fellow in NTU from 2014 to 2017. Since 2021, he became a professor at SCUT. His research interests include radio frequency (RF), millimetre-wave (mm-wave), and Terahertz frequency synthesizers and transceivers.

2013, ISSCC 2013 Silkroad Award (the first & the only Silkroad Award in Singapore)
2013, IEEE Solid-State Circuits Society Student Travel Grant Award

PUBLICATIONS

X. Yi, C. C. Boon, H. Liu, J. Lin, and W. M. Lim, “A 57.9-to-68.3 GHz 24.6 mW frequency synthesizer with in-phase injection-coupled QVCO in 65 nm CMOS Technology,” IEEE J. Solid-State Circuits, vol. 49, no. 2, pp.347–359, Feb. 2014.
X. Yi, C. C. Boon, H. Liu, J. Lin, J. C. Ong, and W. M. Lim, “A 57.9-to-68.3GHz 24.6mW frequency synthesizer with in-phase injection-coupled QVCO in 65nm CMOS,” in IEEE ISSCC Dig. Tech. Papers, Feb. 2013, pp. 354–355.
X. Yi, C. C. Boon, J. Sun, N. Huang, and W. M. Lim, “A low phase noise 24/77 GHz dual-band sub-sampling PLL for automotive radar applications in 65 nm CMOS technology,” in Proc. ASSCC, Nov. 2013, pp. 417–420.
X. Yi, C. C. Boon, J. Lin, and W. M. Lim, “A 100 GHz transformer-based varactor-less VCO with 11.2% tuning range in 65nm CMOS technology,” in Proc. ESSCIRC, Sep. 2012, pp. 293–296.
X. Yi, K. Yang, Z. Liang, B. Liu, K. Devrishi, C. C. Boon, C. Li, G. Feng, D. Regev, S. Shilo, F. Meng, H. Liu, J. Sun, G. Hu, and Y. Miao, “A 65nm CMOS carrier-aggregation transceiver for IEEE 802.11 WLAN applications,” in RFIC Symp. Dig. Papers, May. 2016, pp.67–70.
X. Yi, Z. Liang, G. Feng, C. C. Boon, and F. Meng, “A 93.4-to-104.8GHz 57mW fractional-N cascaded sub-sampling PLL with true in-phase injection-coupled QVCO in 65nm CMOS,” in RFIC Symp. Dig. Papers, May 2016, pp.122–125.
X. Yi, C. C. Boon, M. A. Do, K. S. Yeo, and W. M. Lim, “Design of ring-oscillator based injection-locked frequency dividers with single-phase inputs,” IEEE Microw. Wireless Compon. Lett., vol. 21, no. 10, pp. 559–561, Oct. 2011.
X. Yi, C. C. Boon, G. Feng, and Z. Liang, “An eight-phase in-phase injection-coupled (IPIC) VCO in 65 nm CMOS technology,” IEEE Microw. Wireless Compon. Lett., vol. 27, no. 3, pp. 299–301, Mar. 2017.
X. Yi, C. C. Boon, J. Lin, M. A. Do, K. S. Yeo, and W. M. Lim, “A divide-by-two injection-locked frequency divider with 13-GHz locking range in 0.18-μm CMOS technology,” in IEEE Proc. of ISIC, Dec. 2011, pp. 216–219.
X. Yi, X. Chen, and R. Yao, “Frequency-adjustable clock oscillator based on frequency-to-voltage converter,” IET Electron. Lett., vol. 45, no. 11, pp. 530–532, Nov. 2009.
C. C. Boon and X. Yi, “A 10-67 GHz 1.44 mW 20.7 dB gain VGA-embedded downconversion mixer with 40 dB variable gain range,” IEEE Microw. Wireless Compon. Lett., vol. 24, no. 7, pp. 466–468, Jul. 2014.
X. Yi, R. Yao, “A high precision clock oscillator based on frequency-to-voltage converter,” Microelectronics, vol. 39, no. 3, pp. 344–347,351, Mar. 2009.
N. Huang, C. C. Boon, and X. Yi, “A dual-band 24 and 77 GHz CMOS LNA for automotive radars,” in Int. Conf. on Electronics, Information and Communication (ICEIC), Feb. 2013, pp. 44–45.
N. Huang, C. C. Boon, and X. Yi, “Formulas for the analysis of effect of feedback on noise performance,” in Int. Conf. on Electronics, Information and Communication (ICEIC), Feb. 2013, pp. 1–3.
N. Huang, X. Yi, C. C. Boon, X. Zhao, J. Sun, and G. Feng, “Design of a fully integrated CMOS dual K- and W- band lumped Wilkinson power divider,” in IEEE Int. Midwest Symp. Circuits Syst., Aug. 2013, pp. 788–791.
H. Liu, X. Zhu, C. C. Boon, X. Yi, M. Mao, and W. Yang, “Design of ultra-low phase noise and high power integrated oscillator in 0.25μm GaN-on-SiC HEMT technology,” IEEE Microw. Wireless Compon. Lett., vol. 24, no. 2, pp. 120–122, Feb. 2014.
J. Lin, C. C. Boon, X. Yi, and L. W. M., “A compact single stage V-band CMOS power amplifier with 9.6dBm output power & 17.3% efficiency,” IEEE Microw. Wireless Compon. Lett., vol. 24, no. 3, pp. 182–184, Mar. 2014.
J. Lin, C.C. Boon, X. Yi, and G. Y. Feng, ” A 50GHz – 59 GHz CMOS injection locking power amplifier,” IEEE Microw. Wireless Compon. Lett., vol. 25, no. 1, pp. 52–54, Jan. 2015.
H. Liu, X. Zhu, C. C. Boon, X. Yi, “Design of an oscillator with low phase noise and medium output power in a 0.25 µm GaN-on-SiC high electron-mobility transistors technology,” IET Microwaves, Antennas & Propagation, vol. 9, no. 8, pp. 795–801, Aug. 2015.
H. Liu, X. Zhu, C. C. Boon, X. Yi, L. Kong, “A 71 dB 150 μW variable-gain amplifier in 0.18 μm CMOS technology,” IEEE Microw. Wireless Compon. Lett., vol. 25, no. 5, pp. 334–336, May 2015.
N. Huang, X. Yi, C.C. Boon, X. He, G. Feng, W. M. Lim, and X. Zhu, “A CMOS W-band 4X quasi-subharmonic mixer,” IEEE Microw. Wireless Compon. Lett., vol. 25, no. 6, pp. 385–387, Jun. 2015.
J. Sun, C. C. Boon, X. Yi, W. M. Lim and F. Meng, “Design and analysis of a K-band wideband VCO with robust start-up and frequency boost,” IET Microwaves, Antennas & Propagation, vol. 9, no. 14, pp. 1623–1631, Nov. 2015.
J. Sun, C. C. Boon, F. Meng, X. Yi and W. M. Lim, “A V-band CMOS divide-by-three ILFD with frequency-dependent injection enhancement,” IEEE Microw. Wireless Compon. Lett., vol. 25, no. 11, pp. 727–729, Nov. 2015.
J. Sun, C. C. Boon, X. Zhu, X. Yi, K. Devrishi and F. Meng, “A low-power low-phase-noise VCO with self-adjusted active resistor,” IEEE Microw. Wireless Compon. Lett., vol. 26, no. 3, pp. 201–203, Mar. 2016.
G. Feng, C. C. Boon, F. Meng, X. Yi, and C. Li, “An 88.5 -110 GHz CMOS low-noise amplifier for millimeter-wave imaging applications,” IEEE Microw. Wireless Compon. Lett., vol. 26, no. 2, pp. 134–136, Feb. 2016.
H. Liu, X. He, X. Zhu , C. C. Boon, X. Yi and L. Kong, “A wideband analog-controlled variable-gain amplifier with dB-linear characteristic for high-frequency applications,” IEEE Trans. Microw. Theory Tech., vol. 64, no. 2, pp.533–540, Feb. 2016.
N. Huang, C.C. Boon, X. Zhu, X. Yi, X. He, G.Y. Feng, W.M. Lim, B. Liu, “A 65-nm CMOS LNA for bolometer applications,” Journal of Infrared, Millimeter, and Terahertz Waves, vol. 37, no. 4, pp. 356–374, Apr. 2016.
G. Feng, C. C. Boon, F. Meng, and X. Yi, “A 100-GHz 0.21-K NETD 0.9-mW/pixel charge-accumulation super-regenerative receiver in 65-nm CMOS,” IEEE Microw. Wireless Compon. Lett., vol. 26, no. 7, pp. 531–533, Jul. 2016.
F. Meng, K. Ma, K. S. Yeo, C. C. Boon, X. Yi, etc., “A Compact 57-67 GHz bidirectional LNAPA in 65-nm CMOS technology,” IEEE Microw. Wireless Compon. Lett., accepted.
G. Feng, C. C. Boon, F. Meng, and X. Yi, etc., “Pole-Converging Intra-Stage Bandwidth Extension Technique for Wideband Amplifiers,” IEEE J. Solid-State Circuits, vol. 52, no. 3, pp.769–780, Mar. 2017.
D. Regev, S. Shilo, D. Ezri, J. Zhang, X. Yi and C. C. Boon, “Carrier Aggregation Receiver Employing Direct Re-centred Offset Receivers,” 2017 Texas Symposium on Wireless and Microwave Circuits and Systems, March 2017.

Eunseok Lee

Eunseok Lee (eunseok@mit.edu) received the B.S. degree in Electrical engineering from Korea Advanced Institute of Science and Technology (KAIST), Daejeon, Korea, in 2020. His research interests include THz integrated circuits for security applications. From 2020, he is a PhD student in the EECS department at MIT.

Publications:

[1] S. Kweon, S. Shin, Y. Jung, E. Lee, J. Park, J. Kim, H. Yoo, and M. Je, “Design of reconfigurable time-to-digital converter based on cascaded time interpolators for electrical impedance spectroscopy,” Sensors, 2020.

[2] D. Kim*, E. Lee*, J. Kim, P. Park, and S. Cho, “A sleep apnea monitoring IC for respiration, heart-rate, SpO2 and pulse-transit time measurement using thermistor, PPG and body-channel communication,” IEEE Sensors Journal, 2020

[3] E. Lee, D. Jang, and M. Je, “A level shifter for CMRR-enhanced biopotential acquisition systems with human-body-coupled floating supply domain,” IEEE APCCAS, 2019

[4] E. Lee, S. Park, and S. Cho, “An on-off keying LC oscillator-based acoustic transmitter with fast turn-on and turn-off time,” IEEE APCAS, 2019.

[5] E. Lee, S. Park, N. Koo, and S. Cho, “A low-power piezoelectric speaker driver using LC oscillator for acoustic communication,” ISOCC, 2019

Mohamed Elsheikh

Mohamed Elsheikh (m_sheikh@mit.edu) received his B.Sc. and M.Sc. in electronics and electrical communications engineering in 2016 and 2019, from Ain Shams University, Cairo, Egypt. Post-graduation, he worked as a teaching and research assistant at the same department. His research at the Microwaves and Antenna Research Lab (MARL) included the investigation of multi-modal transmission lines for modeling transitions, meta-material structures, and applications to microwave components. Starting from 2019, he’s a Ph.D. student at Electrical Engineering and Computer Science (EECS) department, Massachusetts institute of technology (MIT).
Publications
[1] M. A.G. Elsheikh and A. M.E. Safwat, “Wide-band modeling of SRR-loaded CPW”, IEEE Transactions on Microwave Theory and Techniques, vol. 67, no. 3, pp. 851-860, March 2019.
[2] M. A.G. Elsheikh and A. M.E. Safwat, “Geometrical modeling of strip-loaded CPW and its application to all CPW air-bridge free Wilkinson power dividers,” IEEE Trans. Microw. Theory Techn., vol. 67, no. 8, pp. 3370-3376, Aug. 2019.
[3] M. A.G. Elsheikh, A. M.E. Safwat and Hadia Elhennawy, “High-Efficiency AMC Loaded Dipole Above FR4 substrate”, International Journal of Microwave and Wireless Technologies, pp. 1–7.

Mina Kim

Mina Kim (minahkim@mit.edu)was born in Ulsan, Korea, in 1992. She received the B.S. degree (summa cum laude) and M.S. degree in electrical engineering from Ulsan National Institute of Science and Technology (UNIST), Korea, in 2013 and 2016. Her research interests include innovative mm-wave and THz integrated circuit and system designs. From Sep. 2017, She is a Ph.D. student at Massachusetts Institute of Technology (MIT).
Publications

Y. Lee, H. Yoon, M. Kim, and J. Choi, “A PVT-Robust Low Reference Spur Injection-Locked Clock Multiplier Using a Voltage-Domain Period-Calibrating Loop”, IEEE Symp. VLSI Circuits Dig., Jun. 2016
M. Kim, S. Choi, and J. Choi, “A Low-Jitter and Fractional-Resolution Injection-Locked Clock Multiplier Using a DLL-Based Real-time PVT-Calibrator with Replica-Delay Cells,” IEEE J. Solid-State Circuits, Oct. 2015
M. Kim, S. Choi, and J. Choi, “A 450-fs jitter PVT robust fractional-resolution injection-locked clock multiplier using a DLL-based calibrator with replica-delay-cells”, in IEEE Symp. VLSI Circuits DIg., Jun. 2015
Y. Lee, M. Kim, T. Seong and J. Choi, “A Low Phase Noise Injection-Locked Programmable Reference Clock Multiplier with a Two-Phase PVT-Calibrator for ¥Ä¥Ò PLLs”, IEEE Transactions on Circuits and Systems I (IEEE T-CAS I), Mar. 2015

Jinchen Wang

Jinchen Wang (jinchen@mit.edu) received the B.Eng. degree in electronic information engineering from the University of Electronic Science and Technology of China in 2019, and the B.Eng. degree with ﬁrst-class honors in electronics and electrical engineering from the University of Glasgow in 2019. He is currently pursuing the Ph.D. degree with the Department of Electrical Engineering and Computer Science, MIT. His research interests include RF/mmW/THz circuits, algorithms, and systems for radar imaging, wireless communication, quantum computing, and other novel applications. He was also a recipient of the IEEE Microwave Theory and Technique Society Undergraduate/Pre-Graduate Scholarship Award in 2019.

Publications:
1. X. Yi, J. Wang, C. Wang, K. E. Kolodziej and R. Han, “A 3.4–4.6GHz In-Band Full-Duplex Front-End in CMOS Using a Bi-Directional Frequency Converter,” 2020 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), Los Angeles, CA, USA, 2020, pp. 47-50.
2. X. Yi, C. Wang, X. Chen, J. Wang, J. Grajal and R. Han, “A 220-to-320-GHz FMCW Radar in 65-nm CMOS Using a Frequency-Comb Architecture,” in IEEE Journal of Solid-State Circuits.
3. X. Yi, C. Wang, M. Lu, J. Wang, J. Grajal and R. Han, “4.8 A Terahertz FMCW Comb Radar in 65nm CMOS with 100GHz Bandwidth,” 2020 IEEE International Solid- State Circuits Conference – (ISSCC), San Francisco, CA, USA, 2020, pp. 90-92.
4. C. Li, F. You, J. Wang, J. Huang and S. He, “Third-order complex delta-sigma modulator with arbitrary poles and zeros placement,” in Electronics Letters, vol. 56, no. 2, pp. 71-73, 23 01 2020.
5. J. Peng, S. He, W. Shi, T. Yao, J. Wu and J. Wang, “Adaptive Signal Separation for Dual-Input Doherty Power Amplifier,” in IEEE Transactions on Microwave Theory and Techniques, vol. 68, no. 1, pp. 121-131, Jan. 2020.
6. C. Li, F. You, J. Peng, J. Wang, M. F. Haider and S. He, “Co-Design of Matching Sub-Networks to Realize Broadband Symmetrical Doherty With Configurable Back-Off Region,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 67, no. 10, pp. 1730-1734, Oct. 2020.
7. W. Shi, S. He, J. Peng and J. Wang, “Digital Dual-Input Doherty Configuration for Ultrawideband Application,” in IEEE Transactions on Industrial Electronics, vol. 67, no. 9, pp. 7509-7518, Sept. 2020.
8. C. Li, F. You, S. He, X. Tang, W. Shi and J. Wang, “High-Efficiency Power Amplifier Employing Minimum-Power Harmonic Active Load Modulator,” in IEEE Transactions on Circuits and Systems II: Express Briefs, vol. 66, no. 8, pp. 1371-1375, Aug. 2019.
9. C. Li, F. You, X. Zhu, J. Wang and S. He, “Design of Broadband Doherty Power Amplifier with Extended Efficiency Range Employing Asymmetric Structure,” 2018 Asia-Pacific Microwave Conference (APMC), Kyoto, 2018, pp. 452-454.
10. J. Wang, S. He, F. You, W. Shi, J. Peng and C. Li, “Codesign of High-Efficiency Power Amplifier and Ring-Resonator Filter Based on a Series of Continuous Modes and Even–Odd-Mode Analysis,” in IEEE Transactions on Microwave Theory and Techniques, vol. 66, no. 6, pp. 2867-2878, June 2018.
11. J. Wang, S. He and D. Gan, “A 2.4/3.5/5.2/5.8-GHz quad-band BPF using SLRs and triangular loop resonators,” in Electronics Letters, vol. 54, no. 5, pp. 299-301, 8 3 2018.
12. J. Wang, Y. Guan, H. Yu, N. Li, S. Wang, C. Shen, Z. Dai, D. Gan, R. Yang, S. He and G. Zhang, “Transparent graphene microstrip filters for wireless communications,” in Journal of Physics D: Applied Physics, 50(34), p.34LT01, 2017.
13. J. Wang, Y. Guan and S. He, “Transparent 5.8 GHz filter based on graphene,” 2017 IEEE MTT-S International Microwave Symposium (IMS), Honololu, HI, 2017, pp. 1653-1655.

Muhammad Ibrahim Wasiq Khan

Ibrahim (ibrahimw@mit.edu) received the B.E. degree (Hons.) in Electrical Engineering from the National University of Science and Technology (NUST), Islamabad, Pakistan in 2012, and the M.Sc. degree in Electrical Engineering from the Korea Advanced Institute of Science and Technology (KAIST), Daejeon, South Korea in 2016, where he worked on THz detectors and THz imaging systems based on CMOS technology. He is currently pursuing a Ph.D. degree with the Electrical Engineering and Computer Science (EECS) Department, Massachusetts Institute of Technology (MIT), Cambridge, MA, USA, where he is working on CMOS-based THz identification tags, THz energy harvesting systems, and THz-OAM secure transceivers. His research interests include mm-wave and THz integrated wireless systems. He is a recipient of IEEE Radio-Frequency Integrated Circuits (RFIC) Symposium 2021 Best Student Paper Award (First Place). He also received the Rector’s Silver Medal for his B.E. degree.

Personal Website

http://ibrahimwasiq.mit.edu

Selected Awards

Won Best Student Paper Award – First Place at RFIC Symposium 2021
Received prestigious KAIST Scholarship for graduate studies (2014)
Awarded Silver Medal (ranked 2^nd) in Electrical Engineering batch of NUST (2012)
Awarded NUST Commandant’s Plaque of Excellence (2012)
Selected among top 50 students for International Physics Olympiad (2008)
Won Unilever Talent Hunt all over Pakistan (2011)

Publications

I. W. Khan, J. Woo, X. Yi, M. I. Ibrahim, R. T. Yazicigil, A. Chandrakasan, and R. Han, “A 0.31THz CMOS Uniform Circular Antenna Array Enabling Generation/Detection of Waves with Orbital Angular Momentum,” 2021 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2021, pp. 203-206. (Best Student Paper Award – First Place)
I. W. Khan, J. Woo, X. Yi, M. I. Ibrahim, R. T. Yazicigil, A. P. Chandrakasan, and R. Han, “A 0.31THz Orbital Angular Momentum (OAM) Wave Transceiver in CMOS with Bit-to-OAM Mode Mapping,” IEEE Journal of Solid-State Circuits, RFIC Special Issue 2021 (Invited).
I. W. Khan, M. I. Ibrahim, C. S. Juvekar, W. Jung, R. T. Yazicigil, A. P. Chandrakasan, and R. Han, “CMOS THz-ID: A 1.6-mm² Package-Less Identification Tag Using Asymmetric Cryptography and 260-GHz Far-Field Backscatter Communication,”IEEE Journal of Solid-State Circuits, vol. 56, no. 2, pp. 340-354, Feb. 2021.
I. Ibrahim, M. I. W. Khan, C. S. Juvekar, W. Jung, R. T. Yazicigil, A. P. Chandrakasan, and R. Han, “THzID: A 1.6mm²Package-Less Cryptographic Identification Tag with Backscattering and Beam-Steering at 260GHz,” 2020 IEEE International Solid-State Circuits Conference – (ISSCC), 2020, pp. 454-456.
I. W. Khan, E. Lee, N. Monroe, A. P. Chandrakasan, and R. Han, “A Dual-Antenna, 263GHz Energy Harvester in CMOS for Ultra-Miniaturized Platforms with 13.6% RF-to-DC Efficiency at -8dBm Input Power,” submitted to 2022 IEEE Radio Frequency Integrated Circuits Symposium (RFIC), 2022.
I. W. Khan, S. Kim, D. Park, H. Kim, S. Han, and S. Lee, “Nonlinear Analysis of Nonresonant THz Response of MOSFET and Implementation of a High-Responsivity Cross-Coupled THz Detector,”IEEE Transactions on Terahertz Science and Technology, vol. 8, no. 1, pp. 108-120, Jan. 2018.
Chen, M. I. W. Khan, X. Yi, X. Li, W. Chen, J. Zhu, Y. Yang, K. E. Kolodziej, N. M. Monroe, and R. Han, “A 140GHz Transceiver with Integrated Antenna, Inherent-Low-Loss Duplexing and Adaptive Self-Interference Cancellation for FMCW Monostatic Radar,”2022 IEEE International Solid-State Circuits Conference – (ISSCC), 2022.
Yi, C. Wang, Z. Hu, J. W. Holloway, M. I. W. Khan, M. I. Ibrahim, M. Kim, G. C. Dogiamis, B. Perkins, M. Kaynak, R. T. Yazicigil, A. P. Chandrakasan, and R. Han, “Emerging Terahertz Integrated Systems in Silicon,”IEEE Transactions on Circuits and Systems I: Regular Papers, vol. 68, no. 9, pp. 3537-3550, Sept. 2021.
T. Yazicigil, P. M. Nadeau, D. D. Richman, C. Juvekar, S. Maji, U. Banerjee, S. H. Fuller, M. R. Abdelhamid, N. Desai, M. I. Ibrahim, M. I. W. Khan, W. Jung, R. Han and A. P. Chandrakasan, “Beyond Crypto: Physical-Layer Security for Internet of Things Devices,” IEEE Solid-State Circuits Magazine, vol. 12, no. 4, pp. 66-78, Fall 2020.
Kim, M. I. W. Khan, D. Park, S. Lee and K. R. Kim, “Effects of Parasitic Source/Drain Junction Area on Terahertz Responsivity of MOSFET Detector,”IEEE Transactions on Terahertz Science and Technology, vol. 8, no. 6, pp. 681-687, Nov. 2018.

Jack Holloway

Jack Holloway (holloway@mit.edu) received the B.S. degree in applied mathematics and electrical engineering and the M.Eng. degree in electrical engineering and computer science from the Massachusetts Institute of Technology (MIT), Cambridge, MA, USA, in 2003 and 2004, respectively. He joined the MIT Terahertz Integrated Electronics group in 2015, and defended his Ph.D. dissertation in 2020.

He was an Officer in the United States Marine Corps from 2006 to 2019, serving as an F/A-18 Pilot, a Program Manager with Office of Naval Research (ONR), and a Technical Advisor with the Defense Innovation Unit (DIU), Office of the Secretary
of Defense (OSD). He was a Visiting Researcher with the Naval Research Laboratory (NRL), Washington, DC, USA, from 2015 to 2020, and an MIT Lincoln Laboratory Military Fellow from 2015 to 2018. He is currently the Director of the Advanced Technology Division, Raytheon Missiles and Defense (RMD), Tewksbury, MA, USA.

Alec Yen

Alec Yen (alecyen@mit.edu) is from Tullahoma, TN. He received the B.S. degree (summa cum laude) in Electrical Engineering from the University of Tennessee, Knoxville in 2020. His undergraduate research focused on analog integrated circuits, with past research in neuromorphic hardware, facial recognition, and power systems. He is currently a Ph.D. student in the EECS department at MIT, with a focus in terahertz integrated systems.

Publications:

[1] G. Long, M. Ericson, C. Britton, B. Roehrs, E. Farquhar, S. Frank, A. Yen, B. Blalock. A Sub-Threshold Low-Power Integrated Bandpass Filter for Highly-Integrated Spectrum Analyzers. (Submitted)

[2] A. Yen, B. Blalock. A High Slew Rate, Low Power, Compact Operational Amplifier Based on the Super-Class AB Recycling Folded Cascode. IEEE Midwest Symp. on Circuits and Systems, Aug. 2020.

[3] D. Cornett, A. Yen, G. Noyola, D. Montez, C. R. Johnson, S. T. Baird, H. J. Santos-Villalobos, and D. S. Bolme. Through the Windshield Driver Recognition. Electronic Imaging, 2019(13), 140-1.

[4] A. Yen, H. Cui, and K. Tomsovic. “CXSparse-Based Differential Algebraic Equation Framework for Power System Simulation.” IEEE North American Power Symposium, Sep. 2018.

Mohamed I. Ibrahim

Mohamed I. Ibrahim (ibrahimm@mit.edu) (URL: mibrahim.mit.edu) received the B.S. (with honors) and M.S. degrees in electrical engineering from Ain Shams University, Cairo, Egypt, in 2012 and 2016, respectively. From 2012 to 2016, he was working as a teaching/research assistant at the Microwave and Antenna Research Lab (MARL) at the Electronics and Communication Engineering department at the same university developing Metamaterial inspired antennas and microwave passive planar structures. Currently he is a graduate Ph.D. student at the Electrical Engineering and Computer Science (EECS) department at the Massachusetts Institute of Technology (MIT).

Publications
[1] M. I. Ibrahim and A. M. E. Safwat, “Metamaterial inspired penta-band monopole antenna,” IEEE Antennas and Wireless Propagation Letters, vol. 12, pp. 1684-1687, 2013.
[2] M. I. Ibrahim, S. I. Elhenawy and A. M. E. Safwat, “Dual-Band Orthogonal-Beam Multi-Standard CRLH Loop antenna,” in Proc. of European Microwave Conference (EuMC), Nuremberg, Germany, Oct. 2013.
[3] M. I. Ibrahim, S. I. Elhenawy and A. M. E. Safwat, “60 GHz Artificial Magnetic Conductor Loaded Dipole Antenna in 65 nm CMOS Technology,” in Proc. of European Microwave Conference (EuMC), Rome, Italy, Oct. 2014.
[4] M. I. Ibrahim, A. M. E. Safwat and H. El-Hennawy , “Single/Dual-Band CSRR-Loaded Differential-Fed Square Patch Antenna with Monopolar Radiation Pattern,” in proc. of the National radio science conference (NRSC), Aswan, Egypt, Feb. 2016.
[5] M. M. Mostafa, M. I. Ibrahim, T. M. Abuelfadl and A. M.E.Safwat, “An optically transparent wideband high impedance surface,” in Proc. of European Microwave Conference (EuMC), London, England, Oct. 2016.

Xingyu Zou

Xingyu Zou (xzou@mit.edu) is an MEng student in electrical engineering, and she is really into circuits. She received her B.S. in electrical engineering and computer science at MIT, and she would like to focus more on hardware during her Master’s.

Yukimi Morimoto

Yukimi Morimoto (yukimi@mit.edu) is from Kumamoto, Japan. She received B.S. in Electrical Science and Engineering from MIT. During her undergraduate years, she worked on fabrication and design of superconducting nanowire single-photon detectors. She would like to focus more on circuit design during her MEng.

Xingcun Li

Xingcun Li received the B.S. degree in Electronic Information Science and Technology from University of Electronic Science and Technology of China, Chengdu, China, in 2017. From Sep. 2017, he is a Ph.D. student at the Department of Electronic Engineering, Tsinghua University, Beijing, China. His research interests include sub-Terahertz and Terahertz integrated circuits and systems.

PUBLICATIONS
[1] Xingcun Li, Wenhua Chen, Yunfan wang and Zhenghe Feng, ”A 180 GHz high-gain cascode power amplifier in a 130-nm SiGeprocess”, Electronics letters.

[2] Xingcun Li, Wenhua Chen, Yunfan wang and Zhenghe Feng, ”A 160 GHz High Output Power and High Efficiency Power Amplifier in a 130-nm SiGe BiCMOS Technology”, IEEE Radio Frequency Integrated Circuits (RFIC), Los Angeles, CA, USA , Jun. 2020.

[3] Xingcun Li, Wenhua Chen, and Zhenghe Feng, ”A 180 GHz High-Gain Cascode Amplifier in 130-nm SiGe Process”, IEEE MTT-S International Microwave Conference on Hardware and Systems for 5G and Beyond(IMC-5G), Atlanta, GA, USA, Aug. 2019.

[4] Xingcun Li, Wenhua Chen, and Zhenghe Feng, ”A G-band Cascode Power Amplifier in 0.13um SiGe BiCMOS Technology”, the 11th UK-Europe-China conference on Millimetre Waves and Terahertz Technologies (UCMMT), Hangzhou, China, Sep. 2018.

[5] Xingcun Li, Wenhua Chen, Junmin Zhou and Zhenghe Feng, ”A Wideband 28 GHz Fully-Integrated Power Amplifier in 65 nm CMOS Technology”, the 10th International Conference on Microwave and Millimeter Wave Technology (ICMMT), Chengdu, China, May 2018.

Email: kbrody@mit.edu
Tel #: (617) 253-0719.

Nathan Monroe

Nathan Monroe (monroe@mit.edu) is from Jacksonville, Florida. He received his B.S. in Electrical Engineering from MIT in 2013. After graduation, he spent two years at Microsoft Corporation as a hardware design engineer on the Xbox Sensor Development Team, contributing to products such as the Kinect and Xbox One. Nathan received his M.Eng. degree in Electrical Engineering from MIT in 2017, with a focus on energy harvesting and audio systems. He is currently a PhD student in the EECS department at MIT, with a research focus on Terahertz integrated systems.

Publications:

[1] N. Monroe, J. Lang. Broadband, Large Scale Acoustic Energy Harvesting via Synthesized Electrical Load: Part I. Harvester Design and Model. 2018. (Submitted)

[2] N. Monroe, J. Lang. Broadband, Large Scale Acoustic Energy Harvesting via Synthesized Electrical Load: Part II. Electrical Load. 2018. (Submitted)

Aaron Pfitenmaier

Aaron Pfitzenmaier (apfitzen@mit.edu) is a junior working towards a Bachelor of Science in Electrical Engineering. His interests include CMOS design, electromagnetics, analog circuit design, and physics. He enjoys doing origami and going for walks.

Lingshan Kong

Lingshan Kong received the B.Eng. degree in electrical and electronic engineering from Nanyang Technological University (NTU), Singapore, in 2014, where she is currently working toward the Ph.D. degree.
Her research interests are focused on analog baseband design and wireline backplane transceiver design.

Weerachai (Junior) Neeranartvong

Weerachai (Junior) Neeranartvong (weeracha@mit.edu) is a fourth-year undergraduate majoring in EECS (Electrical Engineering and Computer Science) and Theoretical Mathematics. He has broad interests in analog/RF circuit designs, signal processing, wireless communications, algorithms, and control systems. He loves exploring new things.

Nestor Franco (nfranco@mit.edu) is a senior working towards a B.S. in Electrical Science and Engineering. He has a wide range of interests including microelectronic and circuit design, electromagnetic applications, neurophysiology, digital circuit design, and high speed photography. His hobbies include learning new languages, playing computer games, and playing and composing music.

Ronald Davis

Ronald Davis III (radavis4@mit.edu) is a senior majoring in Electrical Engineering and Physics. His research interests include signals processing, communications, and applied physics, among other areas. He enjoys playing tennis, writing, video games, and philosophy.

Jimmy Mawdsley

Jimmy (jpmawd@mit.edu) is currently pursuing a B.S. degree in Electrical Engineering at MIT, expected 2018. In addition to THz imaging, he has a strong interest in RF/microwave integrated circuit design and industry trends surrounding 5G millimeter-wave communications, GaN, and consumer radar.

Tingting Shi

Tingting (ttshi@mit.edu) received her B.S. degree in Electronic Science and Engineering from Southeast University, Nanjing, China, in 2008 and received her M.S. degree in microelectronics from University of Electronic Science and Technology of China, Chengdu, China, in 2011. Then, she joined China electronics technology corporation 14th research institute from 2011 to 2014. Now, she is pursuing her Ph.D. degree at State key Laboratory of ASIC and system, Auto-ID Lab, School of Microelectronics, Fudan University.

Rui Ma

Rui Ma (rma@merl.com) received the Bachelor degree from Xi’an Jiaotong University, China, M.S. and Ph.D. degrees from University of Kassel, Germany, in 2006 and 2009, respectively. From 2007-2010, he was with the Microwave Electronics Labs at University of Kassel as research fellow working on the transistor modeling and power amplifier design. From 2010-2012, he was a Senior Research Engineer with Nokia Siemens Networks (now Nokia Networks), where he focused on the R&D of enabling technologies for wideband radio research. Since March 2012, he is with Mitsubishi Electric Research Laboratories (MERL) in Cambridge, Massachusetts. Currently, he is a Principal Research Scientist leading research projects on PA, digital transmitter, THz, as well as emerging applications of GaN. In 2013, he received the specification award by MIPI Alliance for the development of Analog Reference Interface (ACI) for Envelope Tracking eTrak specification. Dr. Ma is a senior member of IEEE and inventor or co-inventor for more than a dozen patents and patent applications.

David (Elliott) Williams

Elliott (gadgy@mit.edu) received his B.S. degree in Electrical Engineering and Computer Science from MIT in 2015 and is expected to receive his M. Eng in Electrical Engineering in 2016. Previously he interned at Apple in the prototyping group. His primary research interest is in exploring non-traditional circuits and devices in order to maximize performance at THz frequencies. His current research focuses on the high frequency behavior of avalanche breakdown. In his free time Elliott enjoys studying Russia, building analog synthesizers, and listening to music.
Selected Awards:
Texas Instruments Undergraduate Research and Innovation Scholar, 2013

Cheng Wang

Cheng Wang (wangch87@mit.edu) (URL: wangcheng.mit.edu) was born in Sui Ning, Si Chuan, China, on March 8, 1987. He received his B.S. degree in engineering physics from Tsinghua University, Beijing, China, in 2008. He received his M.S. degree in radio physics from China Academy of Engineering Physics, Mianyang, China, in 2011. After graduation, he joined Institute of Electronic Engineering, Mianyang, China, where he had worked as an assistant research fellow from 2011 to 2015.
Currently, he is pursuing his Ph.D. degree at Terahertz Integrated Electronics Group, Microsystems Technology Laboratories (MTL), department of Electrical Engineering and Computer Science (EECS), Massachusetts Institute of Technology (MIT).

Awards and Honors:
ADI Outstanding Student Designer Award, 2016
Deng Jiaxian Young Scientist Award, 2012.
Qu Yuzhi Scholarship, granted by Tsinghua University, 2007.

Publications:

Wang, B. Lu, et.al.,”0.34 THz Wireless Link Based on High Order Modulation for Future Wireless Local Area Network Applications,” IEEE Trans. THz Sci. Technol., Vol. 4, No. 1, Jan. 2014.
Wang, C.X. Lin, et.al., “A 10 Gbit/s Wireless Communication Link Using 16QAM Modulation in 140 GHz Band,” IEEE Trans. Microw. Theory Tech., Vol. 61, No. 7, pp. 2737-2746, July 2013.
B. Cheng, G. Jiang, C. Wang, et.al. , “Real-time imaging with a 140 GHz inverse synthetic aperture radar,” IEEE Trans. THz Sci. Technol., Vol. 3, No. 5, pp. 594-605, September 2013.
Wang, B. Lu, L. Miao, et.al., “0.34 THz T/R front-end for wireless communication,” High Power Laser and Particle Beams, Vol. 25, No. 6, pp. 1531-1534, Jun. 2013.
Wang, J. Jiang, L. Miao, et.al. “140GHz doubler based on Schottky varistor,” Journal of Terahertz Science and Electronic Information Technology, Vol. 11, No. 6, pp. 842-846, Dec. 2013.
Jiang, C. Wang, B. Lu, et.al., “V-Band Frequency Source Based on Power Synthesis Technology” Journal of Microwaves, Vol. 29, No. 3, pp 40-43, March 2013.
H. Cui, C. Wang, Y.B. Zeng, “Influencing factors on performance of terahertz MEMS filter,” Journal of Terahertz Science and Electronic Information Technology, Vol. 11, No. 2, pp. 319-322, Apr. 2013.
X. Lin, B. Lu, C. Wang, et.al., “0.34 THz Wireless Local Area Network demonstration system based on 802.11 protocol,” J. THz Sci. Electro. Info. Technol., Vol. 11, No. 1, pp. 12-15, Feb. 2013.
Lu, W. Huang, C. Wang, “A 16QAM Modulation Based 3Gbps Wireless Communication System at 0.34THz Band,” in 38th Int. Infrared, Millim., Terahertz Waves Conf., 2013, pp. 1–2.
Chen, X.J. Deng, B.B. Cheng, C. Wang, “A 220GHz Frequency Doubler Based on Plannar Schottky Diodes,” in 38th Int. Infrared, Millim., Terahertz Waves Conf., 2013, pp. 1–2.
Wang, C.X. Lin, Q. Cheng, et.al., “0.14 THz high speed data communication over 1.5 kilometers,” in 37th Int. Infrared, Millim., Terahertz Waves Conf., 2012, pp. 1–2.
Wang, X.J. Deng, L. Miao, et.al., “110–170 GHz sub-harmonic mixer based on Schottky barrier diodes,” in Int. Microw. Millim. Wave Technol. Conf., 2012, pp. 1–4.
Wang, B. Lu, J. Liu, et.al., “140GHz waveguide H ladder bandpass filter,” in Int. Microw. Millim. Wave Technol. Conf., 2012, pp. 1–4.
Miao, X.J. Deng, X.Z. Xiong, C. Wang, et.al., “Design and simulation of 0.14 THz frequency doubler,” Information and Electronic Engineering, Vol. 10, No. 6, pp 689-694, Dec, 2012.
Miao, X.J. Deng, X.Z. Xiong, C. Wang, et.al., “The Design and Simulation of A 0.14 THz Frequency Doubler,” in Int. Microw. Millim. Wave Technol. Conf., 2012, pp. 1–4.
Wang, C.X. Lin, X.J. Deng, et.al., “Terahertz communication based on high order digital modulation,” in 36th Int. Infrared, Millim., Terahertz Waves Conf., 2011, pp. 1–2.
Wang, C.X. Lin, X.J. Deng, et.al., “140 GHz Data Rate Wireless Communication Technology Research”, Journal of Electronics & Information Technology, Vol. 33, No. 9, pp. 2263-2267, Sept 2011.
Wang, J. Liu, S.Y. Wu, et.al., “0.14 THz 10 Gbps wireless communication system,” Information and Electronic Engineering, Vol. 9, No. 3, pp 265-269, Jun. 2011.
Wang, X.J. Deng, S.W. Xiao, et.al., “140 GHz sub-harmonic mixer based on Schottky diode,” Information and Electronic Engineering, Vol. 9, No. 6, pp 713-717, Dec. 2011.
Wang, J. Liu, S.W. Wu, et.al., “Research of 140 GHz critical RF components,” Information and Electronic Engineering, Vol. 9, No. 5, pp 564-568, Oct. 2011.
J. Deng, C. Wang, et.al., “Experimental Research On 0.14THz Super High Speed Wireless Communication System,” High Power Laser and Particle Beams, Vol. 23, No. 6, pp. 1430-1432, Jun. 2011.

Guo Zhang

Guo Zhang (guozhang@mit.edu) received his B.S. degree in microelectronics in 2015. He worked on novel electronic device simulation during his undergraduate in Tsinghua University and summer intern in UCLA. He is now trying to develop new circuits in THz range. He enjoys running, workout, traveling, music and photography in life.
Selected Awards :

Scholarship For Comprehensive Excellence (EE, Tsinghua, 2012, 8/255)
Scholarship For Comprehensive Excellence (EE, Tsinghua, 2013, 12/275)
National Scholarship (EE, Tsinghua, 2014, 6/269)
Bill Mitchell Design Award (DDI 2016, MIT Media Lab, 1st place)

Publications:

S. Qin, Z. Liu, G. Zhang, J. Zhang, Y. Sun, H. Wu, H. Qian and Z. Yu, “Atomistic Study of Dynamics for Metallic Filament Growth in Conductive-Bridge Random Access Memory,” Physical Chemistry Chemical Physics, 17(14), 8627-8632, 2015.
G. Zhang, J. Zhang, Z. Liu, P. Wu, H. Wu, H. Qian, Y. Wang, Z. Zhang and Z. Yu, “Geometry Optimization of Planar Hall Devices Under Voltage Biasing”, IEEE Trans. on Electron Devices, vol. 61, no. 12, pp. 4216-4223, Dec. 2014.
P. Yao, H. Wu, B. Gao, G. Zhang and H. Qian, “The Effect of Variation on Neuromorphic Network Based on 1T1R Memristor Array”, 15th Non-Volatile Memory Technology Symposium (NVMTS), 2015.

Luis Valenzuela

Luis received his B.S. in Electrical Engineering at California State Polytechnic University, Pomona in 2015. Luis has interned at NASA Ames Research Center/SETI Institute, MIT in the Terahertz Integrated Electronics group, and, at present, Luxima Technology. In the fall of 2016, Luis will begin a M.S./Ph.D. program at University of California, Santa Barbara where he will focus on RF/mm-wave integrated circuits. When not working, Luis enjoys music – he plays the electric guitar, exercise, and a myriad of entertainment.