Company Filing History:
4 out of 900 
1 out of 4,773 
1 out of 1,725 
Years Active: 2010-2019
Title: Innovations of Xiaochuan Guo
Introduction
Xiaochuan Guo is a prominent inventor based in Austin, TX (US). He has made significant contributions to the field of electronics, particularly in power amplifiers and digitally-controlled oscillators. With a total of 6 patents to his name, Guo continues to push the boundaries of innovation.
Latest Patents
One of his latest patents is a Class-F power amplifier matching network. This invention features a class-F power amplifier that includes a first switch and a second switch operating in differential mode. It also incorporates second harmonic trap circuitry that selectively terminates the drain terminals to ground at a second harmonic frequency. The circuitry consists of various lumped inductive and capacitive components. Additionally, the power amplifier includes a common mode trap and a matching network to minimize the imbalance of the drain terminal impedance between first harmonics and third harmonics.
Another notable patent is for a method and apparatus for measuring and compensating mismatches in a digitally-controlled oscillator (DCO). This DCO includes two capacitor arrays that respond to the integer and fractional parts of a digital control word. The mismatch measurement process involves two settling phases, where the first capacitor array is fixed to one capacitive value while the second is adjusted to lock the DCO frequency to a target value. The second phase involves fixing the first capacitor array to another value and adjusting the second array to maintain the frequency lock.
Career Highlights
Xiaochuan Guo has worked with notable companies such as MediaTek Singapore Pte. Ltd. and MediaTek Corporation. His experience in these organizations has allowed him to develop and refine his innovative ideas in the field of electronics.
Collaborations
Throughout his career, Guo has collaborated with esteemed colleagues, including Wen-Chang Lee and Chii-Horng Chen. These partnerships have contributed to the advancement of his research and inventions.
Conclusion
Xiaochuan Guo is a distinguished inventor whose work in power amplifiers and digitally-controlled oscillators has made a significant impact in the electronics industry. His innovative patents and collaborations highlight his commitment to advancing technology.