Chung-Cheng Wang

Title: Innovations of Chung-Cheng Wang

Introduction

Chung-Cheng Wang is a notable inventor based in Taipei Hsien, Taiwan. He has made significant contributions to the field of technology, particularly in the area of phase lock loops. With a total of 4 patents to his name, Wang continues to push the boundaries of innovation.

Latest Patents

Wang's latest patents include a "Phase lock loop and operating method thereof." This invention features a PLL that comprises a first divider, a PFD, a loop filter, a VCO, a second divider, and a controller. The first divider receives a reference signal and divides it to obtain a divided signal. The PFD compares this divided signal with a feedback signal to generate a comparison. The VCO selects one of several operating curves for oscillation based on a selection signal and generates an oscillation signal based on the operating voltage produced by the loop filter. The second divider then divides the oscillation signal to obtain the feedback signal. The controller operates in an initial mode to determine the selection signal by calculating differences between the feedback signal and the divided signal. Once the selection signal stabilizes, the PLL switches to normal mode to operate on the corresponding curve. Another significant patent is for "Automatic frequency tuning in a phase lock loop." This method is designed for automatic frequency tuning in multi-band VCO wireless systems, which have limited initial frequency lock times. It involves selecting a predetermined subset of VCOs as interpolation points, pre-calibrating them, and storing the resulting frequency as (frequency, VCO) pairs for tracking and locking.

Career Highlights

Chung-Cheng Wang is currently employed at Airoha Technology Corporation, where he continues to innovate and develop new technologies. His work has had a substantial impact on the field of wireless communication and frequency tuning.

Collaborations

Wang collaborates with talented coworkers, including Chao-Shi Chuang and Wen-Shih Lu, who contribute to his projects and innovations.

Conclusion

Chung-Cheng Wang is a prominent inventor whose work in phase lock loops and frequency tuning has advanced technology in significant ways. His contributions continue to influence the industry and inspire future innovations.