| Faculty of Engineering and Natural Sciences

Korkut Kaan Tokgöz Faculty of Engineering and Natural Sciences Faculty Member (216) 483 9290 korkuttokgozsabanciunivedu

Jobs

Faculty Member

Education

A1. Philosophy of Doctorate (Ph.D.), Tokyo Institute of Technology, Japan (26.03.2018)
Major: Physical Electronics
Advisor: Prof. Kenichi Okada, Co-Advisor: Emeritus Prof. Akira Matsuzawa
Thesis: “Millimeter-Wave CMOS Transceiver Toward 100Gb/s Wireless Communication Systems.”
Research Interests: De-Embedding, Calibration, Device characterization, Analog Circuit Design, RF/ Millimeter-Wave/Sub-terahertz CMOS Circuits, Ultra-High Data-Rate Wireless Transceivers

A2. Master of Eng. (M.Eng.), Tokyo Institute of Technology, Japan (25.09.2014)
Major: Physical Electronics
Advisor: Prof. Kenichi Okada, Co-advisor: Emeritus Prof. Akira Matsuzawa
Thesis: “Device Characterization for Millimeter-Wave CMOS Amplifiers”

A3. Master of Science (M.Sc.), Middle East Technical University, Ankara, Turkey (10.09.2012)
Major: Electromagnetics
Advisor: Prof. Simsek Demir
Thesis: “Broadband Phase Shifter Realization Using Surface Micromachined Lumped Components”

A4. Bachelor of Science (B.Sc.), Middle East Technical University, Ankara, Turkey (28.06.2009)
Electrical & Electronics Eng. Dept.
Major (1): Microwaves and Antenna Theory, Major (2): Telecommunications

Areas of Interest

Millimeter-wave & Sub-Terahertz ultra-high data-rate & energy-efficient wireless systems towards 6G Mixed-signal, Analog/RF/millimeter-wave/sub-terahertz integrated circuit research Sensors and Systems, Edge-AI, IoT systems hardware, and software development Machine Learning/Artificial Intelligence-assisted semiconductor active and passive device modeling Research guidance, new research theme developments

Memberships

- IEEE Member (Member Number: 92686767), IEEE Solid-State Circuits Society (SSCS), IEEE Microwave Theory and Techniques Society (MTT-S), IEEE Circuits and Systems Society (CASS) - IEICE Member (Member number: 1600451), IEICE Electronics Society (IEICE-C), IEICE Engineering Sciences Society (IEICE-A), IEICE Communications Society (IEICE-B), IEICE Information and Systems Society (IEICE-D) - ACM (Association for Computing Machinery) Member (Member number: 1483329, since 2020/10)

Öznam, Ahmet Alperen and Farhati, Chouaieb and Chraiti, Mohaned and Ghrayeb, Ali and Celebi, Hasari and Abdelkefi, Fatma and Tokgöz, Korkut Kaan (2025) "Bandwidth expansion in n-fold frequency multiplier: is it N or √N?", IEEE Communications Letters, Vol.29, No.6, 1205-1209 (SCI)

Unutmaz, Muhammed Abdullah and Tokgöz, Korkut Kaan and Unlu, Mehmet (2025) "A complete circuit model for terahertz spoof surface plasmon polariton waveguides for ultrafast and accurate synthesis of terahertz integrated circuits", IEEE Access, Vol.13, 111969-111981 (SCI)

Narayanan, Aravind Tharayil and Minati, Ludovico and Hagihara, Aran and Kobayashi, Jun and Shimura, Toshihiro and Kawano, Yoichi and Chakraborty, Parthojit and Bartels, Jim and Tokgöz, Korkut Kaan and Dosho, Shiro and Suzuki, Toshihide and Ito, Hiroyuki (2024) "A neural network-based DPD coefficient determination for PA linearization in 5G and beyond-5G mmWave systems", IEICE Electronics Express, Vol.21, No.10 (SCI)

Amakawa, Shuhei and Sugimoto, Ryotaro and Tokgöz, Korkut Kaan and Lee, Sangyeop and Ito, Hiroyuki and Kishikawa, Ryoko (2023) "Signal-flow-graph analysis of weakly nonlinear microwave circuits around a large-signal operating point", IEEE Transactions on Microwave Theory and Techniques, Vol.71, No.9, 3722-3733 (SCI)

Bartels, Jim and Hagihara, Aran and Minati, Ludovico and Tokgöz, Korkut Kaan and Ito, Hiroyuki (2023) "An integer-only resource-minimized RNN on FPGA for low-frequency sensors in edge-AI", IEEE Sensors Journal, Vol.23, No.15, 17784-17793 (SCI)

Li, Chao and Minati, Ludovico and Tokgöz, Korkut Kaan and Fukawa, Masamoto and Bartels, Jim and Sihan, A. and Takeda, Ken Ichi and Ito, Hiroyuki (2022) "Integrated data augmentation for accelerometer time series in behavior recognition: roles of sampling, balancing, and fourier surrogates", IEEE Sensors Journal, Vol.22, No.24, 24230-24241 (SCI)

Abdo, Ibrahim and Da Gomez, Carrel and Wang, Chun and Hatano, Kota and Li, Qi and Liu, Chenxin and Yanagisawa, Kiyoshi and Fadila, Ashbir Aviat and Fujimura, Takuya and Miura, Tsuyoshi and Tokgöz, Korkut Kaan and Pang, Jian and Hamada, Hiroshi and Nosaka, Hideyuki and Shirane, Atsushi and Okada, Kenichi (2022) "A bi-directional 300-GHz-band phased-array transceiver in 65-nm CMOS with outphasing transmitting mode and LO emission cancellation", IEEE Journal of Solid-State Circuits, Vol.57, No.8, 2292-2308 (SCI)

Minati, Ludovico and Tokgöz, Korkut Kaan and Ito, Hiroyuki (2022) "Distributed sensing via the ensemble spectra of uncoupled electronic chaotic oscillators", Chaos, Solitons and Fractals, Vol.155 (SCI)

Publications:

Patent Publications:

· US Patent Application date: 2020/09/25, Publication Date: 2021/04/01, Publication No: US11158945B2, Japanese Patent Application No. JP2019176396A, Application date: 2019/09/27, Publication date: 2021/04/08, Publication No: JP2021057648A, US Application Status: Granted; JP Application Status: Pending; Title: Phased array antenna apparatus and control method therefor; Korkut Kaan Tokgoz (Principal Inventor), Kazuaki Kunihiro, Naoki Oshima; Affiliation (at the time of patent idea generation): NEC, Kawasaki

Dataset Publication:

· H. Ito, K. Takeda, K. K. Tokgoz, L. Minati, M. Fukawa, L. Chao, J. Bartels, I. Rachi, S. A, “Japanese Black Beef Cow Behavior Classification Dataset” 24/09/2021, Zenodo. https://doi.org/10.5281/zenodo.5399259

Journal Publications:

· C. Li, K. K. Tokgoz, J. Bartels, K. Toda, H. Matsushima, T. Ohashi, K. Takeda, H. Ito, “Data Augmentation for Inertial Sensor Data Applied on CNNs for Behavior Monitoring,” IEEE Sensors Letters, vol. 5, no. 11, pp. 1-4, Nov. 2021, Art no. 7003104, doi: 10.1109/LSENS.2021.3119056.

· C. Li, K. K. Tokgoz, A. Okumura, J. Bartels, K. Toda, H. Matsushima, T. Ohashi, K. Takeda, H. Ito, “Data Augmentation for Cow Behavior Estimation Systems,” IEICE Trans. on Fund. of Electron., Comm., and Computer Sciences (Trans. Fundamentals), Vol.E105-A, No.4, pp.-, Apr. 2022. (Accepted to be published, Online advanced publication). https://doi.org/10.1587/transfun.2021SMP0003

· I. Abdo, K. K. Tokgoz, A. Shirane, K. Okada "F-Band Frequency Multipliers with Fundamental and Harmonic Rejection for Improved Conversion Gain and Output Power," IEICE Trans. On Electron., Vol. E105-C, No.3, pp.-, Mar. 2022. (Accepted to be published, Online advanced publication). https://doi.org/10.1587/transele.2021ECP5036

· H. Ito，K. K. Tokgoz，T. Ohashi，K. Takeda, Manuscript originally in Japanese, English Translation of the title: “Monitoring Technology Development for Ultra-Precision Grazing,” The Journal of Institute of Electronics, Information, and Communication Engineers (IEICE), vol. 104, no. 6, pp.544-551, June 2021.

· J. Pang, Z. Li, R. Kubozoe, X. Luo, R. Wu, Y. Wang, D. You, A. A. Fadila, R. Saengchan, T. Nakamura, J. Alvin, D. Matsumoto, B. Liu, A. T. Narayanan, J. Qiu, H. Liu, Z. Sun, H. Huang, K. K. Tokgoz, K. Motoi, N. Oshima, S. Hori, K. Kunihiro, T. Kaneko, A. Shirane, K. Okada, “A 28-GHz CMOS Phased-Array Beamformer Utilizing Neutralized Bi-Directional Technique Supporting Dual-Polarized MIMO for 5G NR,” IEEE Journal of Solid-State Circuits (JSSC), vol. 55, no.9, pp. 2371-2386, Sep. 2020.

· L. Minati, K. K. Tokgoz, M. Frasca, Y. Koike, L. Ricci, N. Yoshimura, K. Masu, H. Ito, "Distributed Sensing Via Inductively Coupled Single-Transistor Chaotic Oscillators: A New Approach and Its Experimental Proof-of-Concept," IEEE Access, vol. 8, pp. 36536-36555, 24 February 2020.

· J. Pang, K. K. Tokgoz, S. Maki, Z. Li, X. Luo, I. Abdo, S. Kawai, H. Liu, Z. Sun, B. Liu, M. Katsuragi, K. Kimura, A. Shirane, K. Okada, “A 28.16-Gb/s Area-Efficient 60-GHz CMOS Bidirectional Transceiver for IEEE 802.11ay,” IEEE Trans. on Microwave Theory and Techniques (T-MTT), vol. 68, no. 1, pp. 251-262, Jan. 2020.

· K. K. Tokgoz, I. Abdo, T. Fujimura, J. Pang, Y. Kawano, T. Iwai, A. Kasamatsu, I. Watanabe, K. Okada, "A 273-301-GHz Amplifier with 21-dB Peak Gain in 65-nm Standard Bulk CMOS," IEEE Microwave and Wireless Components Letters (MWCL), Vol. 29, No. 5, pp. 342-344, May 2019.

· J. Pang, S. Maki, S. Kawai, N. Nagashima, Y. Seo, M. Dome, H. Kato, M. Katsuragi, K. Kimura, S. Kondo, Y. Terashima, H. Liu, T. Siriburanon, A. T. Narayanan, N. Fajri, T. Kaneko, T. Yoshioka, B. Liu, Y. Wang, R. Wu, N. Li, K. K. Tokgoz, M. Miyahara, A. Shirane, K. Okada, "A 50.1Gb/s 60GHz CMOS Transceiver for IEEE 802.11ay with Calibration of LO Feed-Through and I/Q Imbalance," JSSC, vol. 54, no. 5, pp. 1375-1390, May 2019.

· K. K. Tokgoz, S. Kawai, K. Okada, A. Matsuzawa, "Design of Low-Loss 60GHz Integrated Antenna Switch in 65nm CMOS," IEICE Electronics Express (ELEX), vol. 15, no. 7 pp. 1-10, Mar. 2018.

· R. Wu, R. Minami, Y. Tsukui, S. Kawai, Y. Seo, S. Sato, K. Kimura, S. Kondo, T. Ueno, N. Fajri, S. Maki, N. Nagashima, Y. Takeuchi, T. Yamaguchi, A. Musa, K. K. Tokgoz, T. Siriburanon, B. Liu, Y. Wang, J. Pang, N. Li, M. Miyahara, K. Okada, A. Matsuzawa, "64-QAM 60-GHz CMOS Transceivers for IEEE802.11ad/ay," IEEE JSSC, vol. 52, no. 11, pp. 2871-2891, Nov. 2017.

· A. T. Narayanan, M. Katsuragi, K. Kimura, S. Kondo, K. K. Tokgoz, K. Nakata, W. Deng, K. Okada, A. Matsuzawa, "A Fractional-N Sub-Sampling PLL Using a Pipelined Phase-Interpolator with an FoM of -250dB," IEEE JSSC, vol. 51, no. 7, pp. 1630-1640, Jul. 2016.

· S. Kawai, S. Sato, S. Maki, K. K. Tokgoz, K. Okada, A. Matsuzawa, "Accurate Transistor Modeling by Three-parameter Pad Model for Millimeter-Wave CMOS Circuit Design," T-MTT, vol. 65, no. 6, pp. 1736-1744, Jun. 2016.

· K. K. Tokgoz, K. Lim, S. Kawai, N. Fajri, K. Okada, A. Matsuzawa, "Characterization of Crossing Transmission Line Using Two-Port Measurements for Millimeter-Wave CMOS Circuit Design," IEICE Trans. On Electron., vol. E98-C, no. 1, pp. 35-44, Jan. 2015.

International Conference, Workshop & Seminar Publications (Peer-Reviewed):

· K. K. Tokgoz, K. Okada, "Millimeter-Wave and Sub-Terahertz CMOS Towards 100Gb/s Wireless Communication Systems," (invited to the Workshop: “Enabling Technologies for Efficient Ultra-High-Speed Wireless Communication Systems Towards 100Gb/s”) IEEE MTT-S IMS/RFIC/ARFTG Workshop Series, Atlanta, GA, USA, Jun. 2021.

· J. Bartels, K. K. Tokgoz, M. Fukuwa, S. Otsubo, C. Li, I. Rachi, K. Takeda, H. Ito, “A 216 μW, 87% Accurate Cow Behavior Classifying Decision Tree on FPGA with Interpolated Arctan2,” IEEE International Symposium on Circuits and Systems (ISCAS), Daegu, Korea, pp. 1-5, May 2021.

· I. Abdo, T. Fujimura, T. Miura, K. K. Tokgoz, A. Shirane, K. Okada "A 410mW 34Gb/s 300GHz CMOS Wireless Transceiver," IEEE/ACM Asia South Pacific Design Automation Conf. (ASP-DAC), pp. 3-4, Tokyo, Japan, Jan. 2021.

· R. Onishi, K. Miyamoto, K. K. Tokgoz, N. Ishihara, H. Ito "Capacitive Sensor Circuit with Relative Slope-Boost Method Based on a Relaxation Oscillator," IEEE/ACM ASP-DAC, pp. 5-6, Tokyo, Japan, Jan. 2021.

· K. K. Tokgoz, L. Minati, H. Ito "Current-Starved Chaotic Oscillator Over Multiple Frequency Decades on Low-Cost CMOS: Towards Distributed and Scalable Environmental Sensing with a Myriad of Nodes," IEEE/ACM ASP-DAC, pp. 101-102, Tokyo, Japan, (held Online) Jan. 2021.

· C. Li, K. K. Tokgoz, A. Okumura, J. Bartels, K. Toda, H. Matsushima, T. Ohashi, K. Takeda, H. Ito, “Data Augmentation for Cow Behavior Estimation Systems Based on Neural Network Technology,” IEICE International Workshop on Smart Info-Media Systems in Asia (SISA), RS4-1, pp. 95-100, Online, Dec. 2020.

· K. K. Tokgoz, K. Okada, "Sub-Terahertz 300GHz Amplifier on CMOS for Ultra-High Data-Rate Wireless Communications," (invited) IEEE International Symposium on Radio-Frequency Integration Technology (RFIT), Hiroshima, Japan (attended and presented online), pp. 202-204, Sep. 2020.

· I. Abdo, T. Fujimura, T. Miura, K. K. Tokgoz, H. Hamada, H. Nosaka, A. Shirane, K. Okada " A 300GHz Wireless Transceiver in 65nm CMOS for IEEE802.15.3d Using Push-Push Subharmonic Mixer," IEEE MTT-S International Microwave Symposium (IMS), pp. 623-626, Los Angeles, CA, USA, (held Online) Jun. 2020.

· K. K. Tokgoz, K. Okada, "Millimeter-Wave CMOS Transceiver Toward 1Tbps Wireless Communication," (invited) IEEE International Symposium on Circuits and Systems (ISCAS), Sapporo, Japan, pp. 1-4, May 2019.

· J. Pang, Z. Li, R. Kubozoe, X. Luo, R. Wu, Y. Wang, D. You, A. A. Fadila, R. Saengchan, T. Nakamura, J. Alvin, D. Matsumoto, A. T. Narayanan, B. Liu, H. Liu, Z. Sun, H. Huang, K. K. Tokgoz, N. Oshima, K. Motoi, S. Hori, K. Kunihiro, T. Kaneko, A. Shirane, K. Okada, "A 28GHz CMOS Phased-Array Beamformer Utilizing Neutralized Bi-Directional Technique Supporting Dual-Polarized MIMO for 5G NR," IEEE International Solid-State Circuits Conference (ISSCC), San Francisco, CA, pp. 344-345, Feb. 2019.

· J. Pang, K. K. Tokgoz, S. Maki, Z. Li, X. Luo, I. Abdo, S. Kawai, H. Liu, B. Liu, M. Katsuragi, K. Kimura, A. Shirane, K. Okada, "A 28.16-Gb/s Area-Efficient 60GHz CMOS Bi-Directional Transceiver for IEEE 802.11ay," IEEE Asian Solid-State Circuits Conference (A-SSCC), Tainan, Taiwan, pp. 77-78, Nov. 2018.

· K. K. Tokgoz, S. Maki, J. Pang, N. Nagashima, I. Abdo, S. Kawai, T. Fujimura, Y. Kawano, T. Suzuki, T. Iwai, K. Okada, A. Matsuzawa, "A 120Gb/s 16QAM CMOS Millimeter-Wave Wireless Transceiver," IEEE ISSCC, San Francisco, CA, pp. 168-169, Feb. 2018.

· R. Wu, R. Minami, Y. Tsukui, S. Kawai, Y. Seo, S. Sato, K. Kimura, S. Kondo, T. Ueno, N. Fajri, S. Maki, N. Nagashima, Y. Takeuchi, T. Yamaguchi, A. Musa, K. K. Tokgoz, T. Siriburanon, B. Liu, Y. Wang, J. Pang, N. Li, M. Miyahara, K. Okada, A. Matsuzawa, "Ultra-High-Data-Rate 60-GHz CMOS Transceiver for Future Radio Access Network," (invited) IEEE International Conference on ASIC (ASICON), Guiyang, China, Oct. 2017.

· K. K. Tokgoz, S. Kawai, K. Okada, A. Matsuzawa, “A Low-Loss 60GHz Integrated Antenna Switch in 65nm CMOS,” IEEE RFIT, pp. 50-52, Seoul, Korea, Aug. 2017 (Student Paper Finalist).

· I. Abdo, K. K. Tokgoz, T. Fujimura, K. Okada, A. Matsuzawa, “Comparison Between L-2L and Thru-Reflect-Line De-embedding Methods for W-Band CMOS Amplifier Design,” IEEE RFIT, pp. 34-36, Seoul, KR, Aug. 2017.

· I. Abdo, K. K. Tokgoz, T. Fujimura, K. Okada, A. Matsuzawa, “A 100-123GHz CMOS Frequency Doubler with 5.5dBm Output Power and High Fundamental Rejection,” IEEE RFIT, pp. 138-140, Seoul, Korea, Aug. 2017 (Best Student Paper Award).

· J. Pang, S. Maki, S. Kawai, N. Nagashima, Y. Seo, M. Dome, H. Kato, M. Katsuragi, K. Kimura, S. Kondo, Y. Terashima, H. Liu, T. Siriburanon, A. T. Narayanan, N. Fajri, T. Kaneko, T. Yoshioka, B. Liu, Y. Wang, R. Wu, N. Li, K. K. Tokgoz, K. Okada A. Matsuzawa, “A 128-QAM 60GHz CMOS Transceiver for IEEE802.11ay with Calibration of LO Feedthrough and I/Q Imbalance,” IEEE ISSCC, pp. 424-425, San Francisco, CA, Feb. 2017.

· K. K. Tokgoz, J. Pang, S. Maki, K. Okada, A. Matsuzawa, “A 60GHz Bi-Directional CMOS Transceiver for MIMO Application,” IEEE ISSCC Student Research Preview (SRP), San Francisco, CA, Feb. 2017. (Student Travel Grant Awardee)

· K. K. Tokgoz, S. Maki, S. Kawai, N. Nagashima, Y. Kawano, T. Suzuki, T. Iwai, K. Okada, A. Matsuzawa, "W-Band Ultra-High Data-Rate 65nm CMOS Wireless Transceiver," IEEE/ACM ASP-DAC University LSI Design Contest (UDC), pp. 5-6, Chiba, Japan, Jan. 2017. (Best Design Award)

· K. K. Tokgoz, S. Maki, S. Kawai, N. Nagashima, J. Emmei, M. Dome, H. Kato, J. Pang, Y. Kawano, T. Suzuki, T. Iwai, Y. Seo, K. Lim, S. Sato, N. Li, K. Nakata, K. Okada, A. Matsuzawa, “A 56Gb/s W-Band CMOS Wireless Transceiver,” IEEE ISSCC, pp. 242-243, San Francisco, CA, Feb. 2016.

· A. T. Narayanan, M. Katsuragi, K. Kimura, S. Kondo, K. K. Tokgoz, Y. Terashima, W. Deng, K. Okada, A. Matsuzawa, “A Fractional-N Sub-Sampling PLL using a Pipelined Phase-Interpolator with an FoM of -246dB,” IEEE European Solid-State Circuits Conference (ESSCIRC), pp. 1630-1640, Graz, Austria, Sep. 2015.

Seven (7) more as a first author, and one (1) more as a co-author peer-reviewed & presented Int’l. Conf.

International and Domestic Invited Talks:

· K. K. Tokgoz “Edge-AI based ultra-low power cow behavior monitoring for precision livestock management and animal welfare assessment,” Guest Lecturer, Lectures conducted by Assoc. Prof. Ludovico Minati, The Free University of Bozen-Bolzano, Italy, 11.05.2021. (invited-online).

· K. K. Tokgoz “Accurate Active and Passive Device Characterization Approaches on CMOS up to sub-THz Frequencies for Ultra-High Data-Rate Wireless Links,” EE-Seminar, Faculty of Engineering and Natural Sciences (FENS), Sabanci University, 26.03.2021. (Invited-online).

· K. K. Tokgoz, H. Ito, “Application of Film Bulk Acoustic Resonator for Millimeter-Wave and Sub-Terahertz Regime CMOS Transceivers,” Piezoelectric Materials and Devices Symposium, Tohoku Uni., Jan. 2020 (invited).

· K. K. Tokgoz “Millimeter-Wave and Sub-Terahertz CMOS Toward 100Gb/s Wireless Communication System,” EE-Seminar, FENS, Sabanci University, 23.12.2019. (invited).

· K. K. Tokgoz, “Millimeter-Wave and Sub-Terahertz CMOS Toward 100Gb/s Communication System,” invited talk in FBK, Trentino, Italy for networking and collaboration investigations, Nov. 2019.

Five (5) other international conference or symposium presentations (papers submitted, not peer-reviewed).
Twenty-six (26) domestic conference, workshops and seminar publications and presentations (oral or poster).