BEGIN:VCALENDAR VERSION:2.0 PRODID:IEEE vTools.Events//EN CALSCALE:GREGORIAN BEGIN:VTIMEZONE TZID:Asia/Shanghai BEGIN:STANDARD DTSTART:19910915T010000 TZOFFSETFROM:+0900 TZOFFSETTO:+0800 TZNAME:CST END:STANDARD END:VTIMEZONE BEGIN:VEVENT DTSTAMP:20260517T000801Z UID:87EE58C1-EB89-4F3D-B9E9-BA613E256E11 DTSTART;TZID=Asia/Shanghai:20260513T220000 DTEND;TZID=Asia/Shanghai:20260513T230000 DESCRIPTION:ABSTRACT：The demand for higher data rates and increased netwo rk capacity has driven the transition to millimeter-wave and sub-THz frequ ency bands\, which offer vast\, untapped spectral resources. However\, ach ieving high-performance wireless links at these frequencies presents signi ficant challenges\, including high propagation path loss\, limited semicon ductor device performance\, and stringent signal integrity requirements. O vercoming these obstacles requires a holistic system-level optimization ap proach to physical layer design\, integrating circuit innovations\, advanc ed modeling\, digital signal processing\, and enhanced measurement techniq ues. In this talk\, I will present key research contributions aimed at add ressing these challenges. First\, I will introduce a novel approach for mo deling and mitigating nonlinearities in beamforming arrays\, where antenna mutual coupling induces steering-dependent distortions. Next\, I will pre sent a near-field probe antenna designed to enable in-situ feedback for be amforming array calibration and linearization training. The discussion wil l then shift to a new architecture for sub-THz signal generation using fre quency multipliers\, addressing the operational frequency limitations inhe rent in traditional signal generation methods. Finally\, I will introduce a novel measurement methodology that enables the characterization of high- frequency components under wideband modulated signals\, leveraging frequen cy extenders—bridging the gap between CW-only and modulated-signal testi ng at millimeter-wave and sub-THz frequencies. I will conclude by outlinin g future research directions\, including the development of multi-input mu lti-output (MIMO) array systems for both mid-band (FR3) and high-band appl ications\, novel measurement techniques for emulating large-scale antenna arrays\, and advanced frequency multiplier design and linearization method s tailored for high-fidelity signal generation at increasingly higher freq uencies.\n\nCo-sponsored by: Southern University of Science and Technology \n\nSpeaker(s): Ahmed\, \n\nRoom: Conference Room 427\, Bldg: Building 3\ , Chongwen Campus\, Nanshan Zhiyuan\, SUSTech\, Shenzhen\, Guangdong\, Chi na LOCATION:Room: Conference Room 427\, Bldg: Building 3\, Chongwen Campus\, Nanshan Zhiyuan\, SUSTech\, Shenzhen\, Guangdong\, China ORGANIZER:zhang.qf@sustech.edu.cn SEQUENCE:7 SUMMARY:Advancing Millimeter-Wave and Sub-THz Wireless Systems: A Holistic Approach to Physical Layer Design Optimization URL;VALUE=URI:https://events.vtools.ieee.org/m/559411 X-ALT-DESC:Description: <br /><p>ABSTRACT：The demand for higher data rate s and increased network capacity has driven the transition to millimeter-w ave and sub-THz frequency bands\, which offer vast\, untapped spectral res ources. However\, achieving high-performance wireless links at these frequ encies presents significant challenges\, including high propagation path l oss\, limited semiconductor device performance\, and stringent signal inte grity requirements. Overcoming these obstacles requires a holistic system- level optimization approach to physical layer design\, integrating circuit innovations\, advanced modeling\, digital signal processing\, and enhance d measurement techniques. In this talk\, I will present key research contr ibutions aimed at addressing these challenges. First\, I will introduce a novel approach for modeling and mitigating nonlinearities in beamforming a rrays\, where antenna mutual coupling induces steering-dependent distortio ns. Next\, I will present a near-field probe antenna designed to enable in -situ feedback for beamforming array calibration and linearization trainin g. The discussion will then shift to a new architecture for sub-THz signal generation using frequency multipliers\, addressing the operational frequ ency limitations inherent in traditional signal generation methods. Finall y\, I will introduce a novel measurement methodology that enables the char acterization of high-frequency components under wideband modulated signals \, leveraging frequency extenders&mdash\;bridging the gap between CW-only and modulated-signal testing at millimeter-wave and sub-THz frequencies. I will conclude by outlining future research directions\, including the dev elopment of multi-input multi-output (MIMO) array systems for both mid-ban d (FR3) and high-band applications\, novel measurement techniques for emul ating large-scale antenna arrays\, and advanced frequency multiplier desig n and linearization methods tailored for high-fidelity signal generation a t increasingly higher frequencies.</p> END:VEVENT END:VCALENDAR