WiTech Lab

My research broadly lies in wireless systems spanning radio frequencies from low frequency to ultra-high frequency. I aim to develop metamaterial surfaces — from mechanically passive designs to highly programmable dynamic platforms — that can be seamlessly integrated into wireless environments to support emerging sensing and communication applications. Beyond conventional Metasurface objectives such as signal enhancement and beam steering, my work explores how they can enable new capabilities such as frequency conversion and system-level synergies for various needs and applications.

I am most proud of developing the ability to build complete wireless systems from the ground up. My research come across a wide range of ECE disciplines, including transistor-level circuit design, RF and PCB hardware development, signal processing, and AI-driven algorithms. My research often requires working across very different scales, from designing millimeter-scale antennas and RF transmission lines to extracting tiny sensing signatures from noisy measurements. Building customized systems requires both technical breadth and patience. Developing these skills has been a long journey — one whose significance becomes clear only when looking back at the experience gained.

CMU encourages students to learn through hands-on experience. Building some working systems and prototypes from scratch is one of the most effective ways to gain deep understanding, and CMU provides good platforms, resources, and collaborative environment that allow students to turn ideas into reality.

I enjoy music and have learned to play a bit of guitar and violin. Unfortunately, I am a terrible singer, so please don’t ask me to sing anytime! Instead, if you come visit, I am more than happy to draw or paint something for you, such as a watercolor postcard or a piece of calligraphy.