The Hydra / Charm project demonstrates 140 GHz transceiver arrays with multi-user communication of > 100 Gb/s per beam.
BWRC 2025
Authors: Niknejad Research Team

A Fully-Passive 4-Channel RF Beamformer With Ultra-Low Insertion Loss At 12GHz X/Ku-Band for Low-Power Applications In 28nm CMOS
IMS 2024
Authors: M. Anderson, S. Krishnamurthy, A. M. Niknejad, J. Rabaey

A Fully Wireless, Miniaturized, Multicolor Fluorescence Image Sensor Implant for Real-Time Monitoring In Cancer Therapy
ISSCC 2024
Authors: R. Rabbani, M. Roschelle, S. Gweon, R. Kumar, A. Vercruysse, N. Cho, M. Spitzer, A. M. Niknejad, V. Stojanovic, M. Anwar

A 7$\times$55 X-Ray Energy Binning Dosimeter for Closed-Loop Cancer Radiotherapy
VLSI 2024
Authors: R. Lall, K. Lee, A. Cunha, R. Abergel, Y. Seo, A. M. Niknejad, M. Anwar

A 480-Multiplication-Factor 13.2-to-17.3GHz Sub-Sampling PLL Achieving 6.6mW Power and -248.1 DB FoM Using a Proportionally Divided Charge Pump
ISSCC 2024
Authors: L. Zhang, A. Niknejad

A Heterogeneous SoC for Bluetooth LE In 28nm
Hot Chips 2023 (Undergraduate Class Project )
Authors: F. Guo, N. Krzysztofowicz, A. Moreno, J. Ni, D. Lovell, Y. Chi, K. Ahmad, S. Afshar, J. Alexander, D. Brater

D-Band Packaged CMOS Integrated Transmitter for MU-MIMO Applications
A-SSCC 2022
Authors: M. Wei, N. Baniasadi, E. Chou, H. Beshary, S. Krishnamurthy, E. Alon, A. Niknejad

A Low-Power and Energy-Efficient D-Band CMOS Four-Channel Receiver With Integrated LO Generation for Digital Beamforming Arrays
ESSCIRC 2022
Authors: E. Chou, N. Baniasadi, H. Beshary, M. Wei, E. Naviasky, L. Iotti, A. Niknejad

A Galvanically Coupled Electron Paramagnetic Resonance Spectrometer for Deep Tissue Hypoxia Diagnosis
VLSI 2022
Authors: L. Zhang, A. M. Niknejad

14.1 a 71-to-86GHz Packaged 16-Element By 16-Beam Multi-User Beamforming Integrated Receiver In 28nm CMOS
ISSCC 2021
Authors: E. Naviasky, L. Iotti, G. LaCaille, B. Nikolic, E. Alon, A. Niknejad

10-35GHz Passive Mixer-First Receiver Achieving +14dBm In-band IIP3 for Digital Beam-forming Arrays
RFIC 2020
Authors: S. Krishnamurthy, A. M. Niknejad

A Fully Integrated, Dual Channel, Flip Chip Packaged 113 GHz Transceiver In 28nm CMOS Supporting an 80 Gb/s Wireless Link
CICC 2020
Authors: A. Townley, N. Baniasadi, S. Krishnamurthy, C. Sideris, A. Hajimiri, E. Alon, A. Niknejad

Design and Demonstration Of a Scalable Massive MIMO Uplink At E-Band
ICC Workshop 2020
Authors: G. LaCaille, J. Dunn, A. Puglielli, L. Iotti, S. Ramakrishnan, L. Calderin, Z. Lin, E. Naviasky, B. Nikolic, A. Niknejad, E. Alon

A 138fs-rms Integrated-Jitter and 249dB-FoM Clock Multiplier With -51dBc Spur Using a Digital Spur Calibration Technique In 28-nm CMOS
VLSI 2019
Authors: Y. Li, A. M. Niknejad

A 114GHz Biosensor With Integrated Dielectrophoresis for Single Cell Characterization
VLSI 2019
Authors: A. Ameri, L. Zhang, A. Gharia, A. M. Niknejad, M. Anwar

Higher order N-path filters – with 40dB/dec., 60dB/dec. and 80dB/dec for RF selectivity and enhanced close-in blocker resilience for sub-6GHz 5G, see "Enhanced Passive Mixer-first Receiver Driving an Impedance With 40dB/decade Roll-off, Achieving +12dBm Blocker-P1dB, +33dBm IIP3 and Sub-2dB NF Degradation for a 0dBm Blocker"
RFIC 2019
Authors: S. Krishnamurthy, A. M. Niknejad

A 5.8GHz Power-harvesting 116μmx116μm “dielet” Near-field Radio With On-chip Coil Antenna
ISSCC 2018
Authors: B. Zhao, N. Kuo, B. Liu, Y. Li, L. Iotti, A. M. Niknejad

A 12mW 70-to-100GHz Mixer-first Receiver Front-end for Mm-wave Massive-MIMO Arrays In 28nm CMOS
ISSCC 2018
Authors: L. Iotti, G. LaCaille, A. M. Niknejad

BuLIoT: Berkeley Ultra Low Power IoT Radio, presnted in "580µW 2.2-2.4GHz Receiver With +3.3dBm Out-of-Band IIP3 for IoT Applications"
ESSCIRC 2018
Authors: S. Krishnamurthy, F. Maksimovic, A. M. Niknejad

An FD/FDD Transceiver With RX Band Thermal, Quantization, and Phase Noise Rejection and >64dB TX Signal Cancellation
RFIC 2017
Authors: S. Ramakrishnan, L. Calderin, A. Niknejad, B. Nikolić

A 94GHz 4TX-4RX Phased-array for FMCW Radar With Integrated LO and Flip-chip Antenna Package
RFIC 2016
Authors: A. Townley, P. Swirhun, D. Titz, A. Bisognin, F. Gianesello, R. Pilard, C. Luxey, A. Niknejad

A Microwave Reconfigurable Dielectric-based Glucose Sensor With 20 Mg/dL Sensitivity At Sub-nL Sensing Volume In CMOS
IMS 2015
Authors: J. Chien, E. Yeh, L. P. Lee, M. Anwar, A. M. Niknejad

World's first fully integrated CMOS transceiver chipset (65nm) opearting at 240 GHz. The chip uses a 60 GHz modulator and a coherent QPSK mixer-first receiver with an on-chip antenna.
RFIC 2014
Authors: S. Thyagarajan, Shinwon Kang, A. Niknejad

A fully intergrated interferometer-based dielectric spectrometer for bio-sensing applications. This chip has 28 differential VCOs operating from 6.5-30 GHz.
VLSI 2014
Authors: Jun-Chau Chien, M. Anwar, Yeh Erh-Chia, L. Lee, Ali Niknejad

A fully intergrated RFID communication chip that utilizes wireless power transfer at 24 GHz and UWB pulse-position modulation at 60 GHz. All antennas are integrated onto the chip.
VLSI 2014 (Best Student Paper Award)
Authors: Maryam Tabesh, Mustafa Rangwala, Amin Arbabian, and Ali Niknejad

World's Most Efficient WiGig 60 GHz CMOS Transmitter: “A Digitally Modulated mm-Wave Cartesian Beamforming Transmitter with Quadrature Spatial Combining”
ISSCC 2013
Authors: Jiashu Chen, Lu Ye, D. Titz, F. Gianesello, R. Pilard, A. Cathelin, F. Ferrero, C. Luxey, A. Niknejad

A 65nm CMOS 4-Element Sub-34mW/Element 60GHz Phased-Array Transceiver
ISSCC 2011
Authors: Maryam Tabesh, Jiashu Chen, Cristian Marcu, Lingkai Kong, Shinwon Kang, Elad Alon, Ali Niknejad

Smallest footpring 60 GHz PA with record power and efficiency: "A Compact 1V 18.6dBm 60GHz Power Amplifier in 65nm CMOS"
ISSCC 2011
Authors: Jiashu Chen, Ali M. Niknejad

WLAN CMOS "Digital" PA with 44% peak efficiency and 802.11g compliant OFDM transmission: "A 2.4GHz Mixed Signal Polar Power Amplifier with Low-Power Integrated Filtering in 65nm CMOS"
CICC 2010
Authors: Debopriyo Chowdhury, Lu Ye, Elad Alon and Ali M. Niknejad

110 GHz Distributed Power Amplifier (Record Power / Frequency / Efficiency): "A Stage-Scaled Distributed Power Amplifier Achieving 110GHz Bandwidth and 17.5dBm Peak Output Power"
RFIC 2010 (Best Student Paper Award)
Authors: Jiashu Chen, Ali Niknejad

Widest Bandwidth UWB Transmitter at 90 GHz: "A 90GHz-Carrier 30GHz-Bandwidth Hybrid Switching Transmitter with Integrated Antenna"
ISSCC 2010 (Jack Kilby Award for Outstanding Student Paper)
Authors: Amin Arbabian, Bagher Afshar, Jun-Chau Chien, Shinwon Kang, Steven Callender, Ehsan Adabi, Stefano Dal Toso, Romain Pilard, Daniel Gloria, Ali Niknejad

Most Energy Efficient CMOS 60 GHz Transceiver
ISSCC 2009
Authors: Cristian Marcu,Debopriyo Chowdhury, ChintanThakkar, Ling-Kai Kong, Maryam Tabesh, Jung-Dong Park,Yanjie Wang, Ali Afshar, Abhinav Gupta, Amin Arbabian, Simone Gambini, Reza Zamani, Elad Alon, Ali Niknejad

0.66 THz Gain/Bandwidth Distributed Amplifier
ISSCC 2008
Authors: A. Arbabian and A. M. Niknejad

CMOS 60 GHz PA with > 12dBm Psat
ISSCC 2008
Authors: D. Chowdhury, P. Reynaert, A. M. Niknejad

World's First 60 GHz Transceivers in CMOS
BWRC 2008
Authors: BWRC Collaboration

World's first 104 GHz CMOS Amplifier
ISSCC 2007
Authors: B. Heydari, M. Bohsali, E. Adabi, A.M. Niknejad

Transformer Combined 5.8 GHz 1V CMOS PA
RFIC 2007 (Best Student Paper Award)
Authors: P.Haldi, D. Chowdhury, G. Liu, A.M. Niknejad

World's First 60 GHz CMOS Amplifier
ISSCC 2004
Authors: C. H. Doan, S. Emami, A. M. Niknejad, and R. W. Brodersen

Evolution of RF-DAC "Digital" PA's at BWRC
BWRC 2014
Authors: BWRC Collaboration

CMOS PA research at BWRC covering frequency bands from sub-6GHz RF to mm-Wave and power levels from milliwatts to watts.
BWRC 2024
Authors: BWRC Collaboration