Qing Liu

Title: Innovations of Qing Liu: A Pioneer in Voltage Regulation and Sensing Technologies

Introduction

Qing Liu is an accomplished inventor based in Singapore, known for her significant contributions to the fields of voltage regulation and sensing technologies. With a total of 2 patents, she has demonstrated her expertise and innovative spirit in developing advanced electronic solutions.

Latest Patents

One of her latest patents is a low drop-out (LDO) voltage regulator circuit. This circuit includes a power transistor with a control terminal that receives a control signal and an output terminal connected to an output node. The design features a current regulation loop that senses the current flowing through the power transistor and modulates the control signal to ensure a constant current output. Additionally, a voltage regulation loop monitors the output voltage at the output node, adjusting the control signal to maintain the desired voltage level. The current regulation loop incorporates a bipolar transistor that is driven by a signal based on the difference between the sensed current and a reference value.

Another notable patent is a refractive index sensor designed for analyzing an analyte. This sensor consists of a strip waveguide that receives an input light signal and transmits it to a detector for analysis. The sensor also includes a slot waveguide for sensing the analyte, which receives a sensing signal from the strip waveguide. A grating on the surface of the strip waveguide enhances the sensitivity of the sensor, allowing for precise analysis based on the differences in sensitivity and group index between the two waveguides.

Career Highlights

Qing Liu has worked with prominent organizations, including STMicroelectronics Asia Pacific Pte Limited and the Agency for Science, Technology and Research. Her experience in these companies has contributed to her development as a leading inventor in her field.

Collaborations

Throughout her career, Qing Liu has collaborated with notable colleagues such as Yannick Guedon and Jack Sheng Kee. These partnerships have fostered innovation and the exchange of ideas, further enhancing her contributions to technology.

Conclusion

Qing Liu's work exemplifies the spirit of innovation in the fields of voltage regulation and sensing technologies. Her patents reflect her commitment to advancing electronic solutions that have the potential to impact various industries.