High-capacity Millimeter-wave Imaging System for On-the-move People Screening & PA characterization and evaluation metrics for DPD performance enhancement

#mmwave #imaging #pa #DPD #youngprofessionals

During this Young Professional event we'll have two short (~30min) talks by two YPs. The first talk will be by Dr. Weite Zhang, titled "High-capacity Millimeter-wave Imaging System for On-the-move People Screening" and the second by Dr. Anis Ben Arfi titled "PA characterization and evaluation metrics for DPD performance enhancement". Refreshments (finger-foods) will be provided for those attending in-person and a Zoom link will be provided for those attending virtually.

  Date and Time




  • Date: 08 Nov 2023
  • Time: 06:00 PM to 08:00 PM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
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  • 125 Summer Street
  • Boston, Massachusetts
  • United States 02110
  • Building: Analog Devices, Boston
  • Room Number: Ste 2100
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  • Starts 10 October 2023 04:00 PM
  • Ends 08 November 2023 05:00 PM
  • All times are (UTC-05:00) Eastern Time (US & Canada)
  • No Admission Charge


Weite Zhang Weite Zhang


High-capacity Millimeter-wave Imaging System for On-the-move People Screening

Conventional millimeter-wave (mm-wave) people screening system using synthetic array with mechanical scan is slow and inconvenient, which requires each individual to pose and wait for processing. Recent advances in people screening systems have been using multistatic or phased arrays to achieve faster image formation, where however, the imaging performance is still not optimal due to limited spatial diversity of beam pattern and large number of measurements. This talk presents a new imaging system architecture to enable 4-D imaging of on-the-move objects (1-D velocity and 3-D profile), which leverages cost-effective compressive reflector antenna (CRA) and novel mm-wave multiple-in multiple-out (MIMO) array design. The CRA creates spatial coding to achieve informative measurements and high sensing capacity. The MIMO array generates fast space-time-coded frequency-modulated continuous wave (FMCW) for quick data collection and simultaneous MIMO operation. A lab prototype is also designed to show good imaging performance of on-the-move objects, giving great potential for developing future mm-wave security screening systems that allow multiple people to walk through at normal speed.


Weite Zhang received the M.S. degree from Zhejiang University, Hangzhou, China, in March 2017, and the Ph.D. degree from Northeastern University, Boston, MA, USA, in May 2022. He was a Senior Research Engineer at Northeastern University from May 2022 to March 2023. His research mainly focuses on high-capacity sensing and wireless communication systems. Since March 2023, he has been a Senior Engineer at Analog Devices Incs., where he is working on digital pre-distortion (DPD) and integrated sensing and communication (ISAC) for 5G and beyond networks.

Anis Ben-Arfi Anis Ben-Arfi


PA characterization and evaluation metrics for DPD performance enhancement

Developers of 5G RF Power Amplifiers (PAs) and front-end technology often face difficult trade-off between device linearity and efficiency. To address the increased bandwidth and power efficiency requirements of 5G systems, PAs are pushed to operate at non-linear regions. Hence, the need for Digital Pre-Distortion (DPD) to correct for the non-linearity and preserve the highly-efficient PA operation. The design of these efficient PAs needs to follow critical criteria to ensure linearizability (i.e the PA's ability to be linearized by applying predistortion). For this reason, a thorough PA characterization is needed to verify the efficiency and linearity criteria. The talk will cover PA characterization work and how it can be automated to save time, avoid human error and improve accuracy.


Dr. Anis Ben-Arfi received his PhD in 2019 from the University of Calgary and currently works at Analog Devices in Ottawa where he focuses on 5G Wireless Systems and digital processing algorithms. Anis has been actively volunteering with IEEE MTT-S where he served as a coordinator of the Distinguished Microwave Lecturer and Young Professional Representative for IEEE Region 7 (Canada). He is leading the IEEE MTT-S Student Ambassador Program established this year. Dr. Anis has participated in several national and international events and conferences and has won prestigious awards.