Co-organized by the NTU Department of Electrical Engineering, ACRC, IEEE SSCS Taipei Chapter, and NTU RTRC, a forward-looking academic lecture was successfully held on July 22, 2026, at the NTU EE Building 2. The event featured a keynote presentation by Prof. Woogeun Rhee (Li Yugen), an IEEE Fellow from Sungkyunkwan University, titled "Low-voltage frequency generation, modulation, and demodulation circuits for mobile IoT".
As Mobile IoT becomes ubiquitous, enabling battery-free operation by utilizing energy harvesters has become critical for next-generation SoC development. Prof. Rhee highlighted that scaling the supply voltage to Sub-0.5V is the most direct approach to reducing overall power consumption, though it poses significant challenges for clock and frequency generators. To address this, his team introduced several innovative solutions:

Breaking Sub-0.5V Limits: Overcoming the vulnerability of ultra-low voltage clock generators to PVT (Process, Voltage, Temperature) variations.

Voltage-mode Phase Interpolation (VPI): Enhancing phase sensitivity and noise immunity to achieve a low-power PLL (HPLL) with 592.7fs integrated jitter in 28nm CMOS.

Polar Phase-Tracking Receiver (Polar PT-RX): Bypassing traditional Cartesian I/Q architecture limitations to create ultra-low-power, high-rejection wireless transceivers compliant with BLE specifications.

During the Q&A session, attendees engaged in in-depth discussions with Prof. Rhee regarding measurement data in 28nm and 65nm CMOS processes, loop stability design details, and potential edge computing applications. Supported by the MOE and NSTC, this event not only deepened international academic cooperation but also provided invaluable technological inspiration for Taiwan's RF and analog IC design community.

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