Rui ("Ray") Xu

University of Texas at Austin 2013-2018

CMOS Lock-in Amplifier for Terahertz Detection

Texas Analog Center of Excellence (TxACE), Univ. of Texas at Dallas

2011 - 2013


Paper published into Radio Frequency Integrated Circuits Conference 2016: PDF (Best student paper award finalist)
Paper submitted for the 2012 Intel STS Competition: PDF (1.9MB) (semi-finalist)
Poster presented at the American Association for the Advancement of Science (AAAS) 2013 convention in Boston: PDF (1.7M)

Designed a 10MHz-bandwidth lock-in amplifier circuit that was integrated with four 840GHz detectors designed by collegues on monolithic CMOS. First tapeout in United Microelectronic Corportation's 130 nano-meter CMOS process. This project is a continuation of this news article.

Done under the supervision of Professor Kenneth Kyongyop O.


Micro-photograph of the finished chip prior to wirebonding. Approximate size: 1.5mm x 0.8mm.

Red Bull Creation

Plano Robotics Team (Founder), in collarboation with Dick Swan and the Dallas Personal Robotics Group

Summer 2012


Informal video by one of the participants: LINK

A collaboration project that was featured on Red Bull's Creation 2012 web series.

Radar Project

Independent Research At Home

2010-2011


Poster presented at the TxACE 2011 Annual Symposium: PDF (550kB)
Article published in the 2011 Central States VHF Society (CSVHFS) Conference Proceedings: PDF (1.8MB)

Scans of laboratory journals available upon request

Developed a compact 10GHz radar system capable of Doppler and distance measurement for biomedical use. Demonstrated the idea and applications by using waveguides, however, the project was eventually suspended due to my project at TxACE. Thanks to Kent Britain and the members of the North Texas Microwave Society for supporting my project and their donation of electronic parts.

VEX NERF Gun Robot

In collarboation with Dick Swan (founder of RobotC)

Spring 2010


Publication in the Jan/Feb 2011 edition of ROBOT Magazine: PDF (3MB)
Informal video of the robot in action: LINK

First project done in collaboration with a mentor. This robot was showcased at the 2010 VEX World Championships to promote VEX Robotics and RobotC Products.

Rui ("Ray") Xu — [email protected] — (214) - 868-8739