Changhui Cathy Zhang

Title: Changhui Cathy Zhang: Innovator in Phase Locked Loop Technology

Introduction

Changhui Cathy Zhang is a prominent inventor based in Ottawa, Canada. She has made significant contributions to the field of digital phase locked loops, holding 2 patents that enhance the performance and accuracy of these systems. Her work is instrumental in advancing technology in the semiconductor industry.

Latest Patents

One of her latest patents is titled "Method of speeding up output alignment in a digital phase locked loop." This invention focuses on improving the speed of output clock alignment in a digital phase locked loop. It involves a controlled oscillator that generates synthesizer pulses, which are divided to produce output pulses at predetermined intervals. During the alignment procedure, the output pulses are adjusted based on a delay value obtained from comparing their phase with a reference clock. This method effectively reduces the spacing between output pulses to ensure accurate alignment.

Another notable patent is "Phase locked loop with accurate alignment among output clocks." This invention describes a multi-channel phase locked loop device that includes several PLL channels. Each channel features a digitally controlled oscillator that supplies an output clock to a specific output pin. A feedback calibration PLL adjusts the phase of the output clock based on feedback signals, ensuring precise alignment among the output clocks.

Career Highlights

Changhui Cathy Zhang currently works at Microsemi Semiconductor Ulc, where she applies her expertise in semiconductor technology. Her innovative approaches have positioned her as a key figure in her field, contributing to advancements that benefit various applications in electronics.

Collaborations

Throughout her career, she has collaborated with notable colleagues, including Qu Gary Jin and Mark A Warriner. These partnerships have fostered a creative environment that encourages the development of cutting-edge technologies.

Conclusion

Changhui Cathy Zhang is a remarkable inventor whose work in phase locked loop technology has made a significant impact in the semiconductor industry. Her patents reflect her dedication to innovation and her ability to solve complex engineering challenges.