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Xiangtao Li
Researcher at Georgia Institute of Technology
Publications - 12
Citations - 203
Xiangtao Li is an academic researcher from Georgia Institute of Technology. The author has contributed to research in topics: Heterojunction bipolar transistor & Amplifier. The author has an hindex of 8, co-authored 12 publications receiving 200 citations.
Papers
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Proceedings ArticleDOI
An 8-bit, 12 GSample/sec SiGe track-and-hold amplifier
Yuan Lu,Wei-Min Lance Kuo,Xiangtao Li,R. Krithivasan,John D. Cressler,Y. Borokhovych,Hans Gustat,Bernd Tillack,Bernd Heinemann +8 more
TL;DR: This circuit is the fastest 8-bit Si-based THA achieved to date and uses a degeneration inductor in the input buffer to improve the performance of the THA.
Journal ArticleDOI
A Low-Power, $X$ -Band SiGe HBT Low-Noise Amplifier for Near-Space Radar Applications
Wei-Min Lance Kuo,R. Krithivasan,Xiangtao Li,Yuan Lu,John D. Cressler,Hans Gustat,Bernd Heinemann +6 more
Abstract: A low-power, X-band low-noise amplifier (LNA) is presented. Implemented with 180 GHz silicon-germanium (SiGe) heterojunction bipolar transistors (HBTs), the circuit occupies 780times660 mum2. The LNA exhibits a gain of 11.0 dB at 9.5 GHz, a mean noise figure of 2.78 dB across X-band, and an input third-order intercept point of -9.1 dBm near 9.5 GHz, while dissipating only 2.5 mW. The low-power performance of this LNA, together with its natural total-dose radiation immunity, demonstrates the potential of SiGe HBT technology for near-space radar applications
Proceedings ArticleDOI
A 5-bit, 18 GS/sec SiGe HBT track-and-hold amplifier
TL;DR: An ultra-high-speed track-and-hold amplifier (THA) using a switched-emitter-follower (SEF) configuration is presented in this paper, which can operate at a sampling rate of 18 GS/sec with a total harmonic distortion (THD) of -32.3 dBc, and dissipates 128 mW.
Proceedings ArticleDOI
A 40 GS/s SiGe track-and-hold amplifier
TL;DR: In this article, an ultra-high-speed SiGe track-and-hold amplifier (THA) using a switched-emitter-follower (SEF) configuration is presented.
Proceedings ArticleDOI
A low-power, 10GS/s track-and-hold amplifier in SiGe BiCMOS technology
Y. Borokhovych,Hans Gustat,Bernd Tillack,Bernd Heinemann,Yuan Lu,Wei-min Kuo,Xiangtao Li,R. Krithivasan,John D. Cressler +8 more
TL;DR: The present circuit is by far the fastest THA with low power consumption and high accuracy, and the achieved THD corresponds to 6.8 bits accuracy.