Charles Chang-I Wang

Title: Innovations of Charles Chang-I Wang in PLL Technologies

Introduction

Charles Chang-I Wang is a notable inventor based in Irvine, CA, recognized for his contributions to innovative technologies in the field of phase lock loops (PLLs). With a total of two patents to his name, his work focuses on enhancing the performance and capabilities of PLL systems.

Latest Patents

Charles Wang's latest patents include:

1. **Apparatus and Method for an All-Digital Phase Lock Loop**: This patent describes a method, computer-readable medium, and an apparatus that utilizes an otw signal linked with low-path pass information and transmission data. The apparatus applies a cost function and an update function to the otw signal before sending it to an oscillator. Additionally, it determines a correction factor to estimate the gain of the oscillator using output from the update function.

2. **VCO Gain Estimation by Capacitive Measurement**: This patent focuses on techniques and apparatus for estimating the gain of a voltage-controlled oscillator (VCO) within a PLL. It discusses calculating a C-V characteristic of a varactor that is matched to another varactor in the VCO. The method allows for estimating the VCO gain based on various parameters while the PLL is operational.

Career Highlights

Charles Wang is currently employed at Qualcomm Incorporated, a leading company in wireless technology and semiconductor research. His work and innovations have significantly contributed to advancements in PLL technology, enhancing system performance and reliability.

Collaborations

Throughout his career, Charles has worked alongside esteemed colleagues such as Emanuele Lopelli and Salvatore Pennisi. Their collaborative efforts in research and development within Qualcomm have driven forward the company's commitment to innovation in technology.

Conclusion

Charles Chang-I Wang's inventive contributions, particularly in the domain of phase lock loop technologies, exemplify the impact of research and development in the tech industry. With a focus on practical applications and efficiency improvements, his work continues to influence advancements in this critical field.