• 8/13/2018
        Jimmy Mawdsley is named Siebel Scholar. Congratulations to Jimmy on winning this prestigious award!

      • 8/8/2018

        Our group will collaborate with the quantum photonics lab, led by Prof. Dirk Englund at MIT, and the quanta research group, led by Prof. Isaac Chuang at MIT, on a very large scale integrated electronics and photonics platform for quantum-information processing. This project will be supported by the Research Advanced by Interdisciplinary Science and Engineering (RAISE) program at the National Science Foundation.

      • 7/26/2018
        Our group and the Energy-Efficient Circuits and Systems Group led by Prof. Anantha Chandrakasan at MIT will be supported by the SpecEES (Spectrum Efficiency, Energy Efficiency and Security) program of National Science Foundation (NSF).
        In this program, the two teams will jointly innovate tagging devices that utilize highly-secured transmission of sub-THz waves.

      • 7/19/2018
        Congratulations to Cheng Wang on passing his research qualifying exam (RQE)!

      • 7/13/2018
        A new paper on molecular clock–a new approach towards low-cost miniaturized frequency reference with atomic-clock-grade stability, is published on Nature Electronics today. This paper describes the fundamental physics of the clock, experimental data of the reference molecules (carbonyl sulfide), two prototypes (both at lab-scale and chip-scale), as well as the stability analysis and measurements. Congratulations to Cheng Wang and other members (James Mawdsley, Mina Kim, Y. Xiang and Zihan Wang) of the molecular clock team!
        Update (7/16/2018): The paper features on the cover of the journal’s July issue, and the homepage of

      • 7/11/2018
        The National Science Foundation (NSF) has granted the Terahertz Integrated Electronics Group at MIT an award in support of our work on CMOS-based THz molecular clock. In this project, novel interdisciplinary approaches combining the unique feature of molecular rotation and state-of-the-art circuit/architecture will be applied in order to achieve enhanced stability and energy efficiency. We thank NSF for funds supporting this project and our early exploratory efforts on chip-scale wave-matter interactions.

  • 5/16/2018
    Prof. Ruonan Han will deliver a keynote speech at the 2019 German Microwave Conference (GeMiC) in Stuttgart, March 25, 2019. He will also give invited talks in the following conferences:

    • IEEE Radio-Frequency Integrated Circuit (RFIC) Symposium (Philadelphia, PA, June 2018)
    • Progress in Electromagnetics Research Symposium (Toyoma, Japan, PIERS, August 2018)
    • IEEE European Microwave Symposium (Madrid, Spain, September 2018)
    • IEEE International Conference on Solid-State and Integrated Circuit Technology (ICSICT, Qingdao, China, Nov. 2018)
    • IEEE Topical Meetings on Silicon Monolithic Integrated Circuits in RF Systems (SiRF, Orlando, FL, Jan. 2019).

  • 4/2/2018
    Two of our recent works on chip-scale wave-matter interactions will be presented on IEEE VLSI Circuit Symposium in Honolulu, HI. Mohamed Ibrahim will demonstrate, for the first time, optically-detected magnetic resonance (ODMR) of nitrogen-vacancy (NV) centers in diamond using a CMOS chip. In collaborating with Prof. D. Englund’s group at MIT, we aim to significantly reduce the cost and form factor of quantum sensors for magnetometry. For the second work, Cheng Wang invents an “atomic clock on CMOS chip” using a low power and compact sub-THz spectrometer. This new frequency reference provides a long-term stability that is orders of magnitude higher than quartz-crystal oscillators. This work is also selected as the technical highlight of the conference.

  • 2/12/2018
    Prof. Ruonan Han is promoted to Associate Professor without Tenure (AWOT), effective July 1, 2018. (News on MIT EECS)

  • 2/11/2018
    Our 240GHz large-scale heterodyne sensing array paper (Zhi Hu as the first author) is accepted to 2018 IEEE Radio-Frequency Integrated Circuit (RFIC) Symposium. On this CMOS chip, 32 heterodyne receivers are implemented with fully-integrated, phase-locked LO generator. Compared to prior square-law detector arrays, this chip increases the sensitivity by 6x and enables electronic steering of two concurrent narrow beams.

  • 12/25/2017
    Two invited papers on IEEE Journal of Solid-State Circuits are published (2017 December Issue and 2018 May Issue [available online]). Details of our THz frequency-comb-based spectrometer on a CMOS chip and our 1-THz radiation source on a SiGe chip are presented.

  • 12/20/2017
    Prof. Han joined the IEEE Radio-Frequency Integrated Circuit (RFIC) Symposium Technical Program Committee.

  • 12/7/2017
    For the 2nd time in a row, Prof. Ruonan Han delivered an invited talk at IEEE Intl. Electron Device Meetings (IEDM). He presented the group’s latest research progress in large-scale homogeneous and heterogeneous THz arrays, as well as the future trend of chip development, for ultra-high-resolution sensing and broadband spectroscopy.

  • 11/1/2017
    Prof. Ruonan Han gave two invited talks recently on IEEE Midwest Symposium on Circuits and Systems (MWSCAS) and IEEE European Microwave Symposium.

  • 9/1/2017
    We welcome three new members to the group. Dr. Xiang Yi joined as a post-doctoral researcher. Prior to this appointment, he was a research scientist in Nanyang Technological University (NTU) in Singapore. Mina Kim (B.S. & M.S. Ulsan National Institute of Science and Technology, Korea) and Muhamed Ibrahim Khan (B. S., National University of Science and Technology, Pakistan, M.S. KAIST, Korea) joined as PhD students.

  • 6/10/2017
    Prof. Ruonan Han joined the IEEE Intl. Microwave Symposium (IMS) Steering Committee.

  • 6/4/2017
    Zhi Hu’s paper on a large-scale 1-THz radiator array in SiGe won the best student paper award (2nd-place) at the 2017 IEEE Radio-Frequency Integrated Circuit (RFIC) Symposium. Using innovations at device and electromagnetic levels, this work achieves record total radiated power (0.1mW) in mid-THz range among all silicon electronic chips. In particular, up to 91 coherent active radiators are integrated within only 1mm2 die area.  The award was presented by the RFIC TPC Chair, Dr. Kevin Kobayashi. Congratulations to Zhi!

  • 2/8/2017
    Cheng Wang presented a paper on IEEE International Solid-State Circuit Conference (ISSCC 2017) — the flagship conference for integrated circuits and systems. In this paper, Cheng introduced high parallelism into broadband THz molecular sensing, and successfully obtained the ultra-narrow rotational spectral lines of molecules using a pair of CMOS frequency-comb chips.
    Congratulations to Cheng!

  • 2/5/2017
    Zhi Hu’s paper on a high-power radiation source at 1THz using 130-nm SiGe HBT technology is accepted to IEEE Radio-Frequency Integrated Circuits Symposium (RFIC 2017). The paper will be presented in June 2017 in Honolulu, Hawaii. Congratulations to Zhi!

  • 2/3/2017
    Congratulations to Jack Holloway on passing his Ph.D. RQE (research qualifying exam).

  • 2/1/2017
    Two Awards: Cheng Wang won an IEEE MTT Boston Travel Grant, and Guo Zhang won the MIT MARC 2017 Best Pitch Award. Congratulations!

  • 1/31/2017
    Prof. Ruonan Han won the National Science Foundation Faculty Early Career (NSF CAREER) Award. It will fund research and education programs on chip-scale electronic frequency combs at terahertz frequency for energy-efficient and broadband sensing and imaging. For more information, see this MIT News: “Three MIT engineering faculty win 2017 NSF CAREER Awards“.

  • 12/7/2016
    Prof. Ruonan Han gave an invited talk on International Electron Device Meeting (IEDM 2016). This is part of the focus session “Ultra-High Speed Electronics”, which assembled top researchers in THz technologies from MIT, Northrop Grumman, UCSB, RPI, etc. Ruonan reported the group’s research progress in silicon-based THz sources, sensors and interconnects. He also shared his vision on future energy-efficient THz microsystems.

  • 12/1/2016
    Our group receives a grant from MIT Lincoln Labs and will collaborate with their chemists to conduct research on molecular behaviors and interactions with THz chip devices for homeland security sensing, navigation, etc. We acknowledge MIT Lincoln Labs for this and their past support.

  • 09/24/2016
    Two new members to the group: Mohamed Ibrahim joins as a Ph.D. student, and Jimmy Mawdsley joins as a SuperUROP student. Welcome!

  • 08/24/2016
    Prof. Ruonan Han gave a talk in the THz technology workshop of 2016 IEEE Radio-Frequency Integration Technology (2016 RFIT).

  • 6/11/2016
    Dr. Rui Ma from Mitsubishi Electric Research Lab joins as a visiting scientist. Welcome!

  • 6/1/2016
    David Elliott Williams graduated from our group. His M. Eng. thesis studies, both theoretically and experimentally, avalanche breakdown in THz silicon devices for various sensing and metrology applications. David currently works at SpaceX Inc. and will join Caltech as a Ph.D. student.

  • 01/28/2016
    Cheng Wang won the 2016 ADI Outstanding Student Designer Award. Congratulations!

  • 01/28/2016
    A fully-integrated THz heterodyne imaging system is presented on ISSCC 2016. This is a collaboration between Cornell University, MIT and ST Microelectronics.

  • 10/11/2015
    Tingting Shi from Fudan University joins as a visiting student. Welcome!

  • 09/01/2015
    Cheng Wang, Zhi Hu and Guo Zhang join the group as Ph.D. students. Welcome!

  • 05/30/2014
    Pranav Kaundinya graduated from our group and joined Silicon Labs (Austin,TX) as an analog circuit designer. His M. Eng. thesis explores an interesting topologically approach that synthesizes high-frequency resonance without large-size, physical inductors.

  • 02/04/2015
    Captain Jack Holloway joins the group as a Ph.D. student. He also receives the MIT Lincoln Laboratory Military Fellowship. Welcome, Jack!

  • 10/29/2014
    Ruonan is appointed as the E. E. Landsman (1958) Career Chair (see the news).

  • 10/13/2014
    Prof. Han’s paper on a high-power THz transmitter is accepted to ISSCC 2015,
    The chip demonstrates the record radiated power (3.3 mW @ 320 GHz) in silicon THz sources!

  • 09/16/2014
    Pranav joined as an M.Eng. student. Welcome!

  • 07/14/2014
    The group website is online!

  • 07/01/2014
    Ruonan Han joined the faculty of MIT EECS (see the news)