Wei-Chen Shen

Title: Innovations of Wei-Chen Shen

Introduction

Wei-Chen Shen is a notable inventor based in Hsinchu, Taiwan. He has made significant contributions to the field of electronics, particularly in the development of circuits that enhance the performance of variable gain amplifiers. With a total of 4 patents to his name, Shen's work is recognized for its innovative approach to solving complex engineering challenges.

Latest Patents

One of Shen's latest patents is a DC offset canceling circuit applied in a variable gain amplifier. This invention includes chopper circuits, a transconductance amplifier, and at least one internal capacitor. The transconductance amplifier and the capacitor work together as a filter to cancel the DC offset of the variable gain amplifier. A first chopper circuit is positioned between the output of the variable gain amplifier and the input of the transconductance amplifier. Additionally, a second chopper circuit is placed between the output of the transconductance amplifier and the capacitor. This innovative design translates the DC offset and low-frequency noise of the transconductance amplifier to a chopping frequency, which is significantly higher than the desired signal bandwidth. As a result, the amount of undesired signals in the passband is greatly reduced.

Another patent by Shen also focuses on a DC offset canceling circuit applied in a variable gain amplifier. This circuit comprises a transconductance amplifier and at least one internal capacitor that functions as a filter. The input of the transconductance amplifier is electrically connected to the output of the variable gain amplifier, while the output of the transconductance amplifier and the internal capacitor are connected to the input of the variable gain amplifier to create a feedback loop. The input stage of the variable gain amplifier includes an auxiliary differential pair to enhance the DC offset cancellation process.

Career Highlights

Throughout his career, Wei-Chen Shen has worked with prominent organizations such as Silicon Integrated Systems Corporation and the Industrial Technology Research Institute. His experience in these companies has allowed him to refine his skills and contribute to various innovative projects in the field of electronics.

Collaborations

Shen has collaborated with several talented individuals, including Chi-Tai Yao and Hung-Chih Liu. These collaborations have further enriched his work and led to advancements in his inventions.

Conclusion

Wei-Chen Shen's contributions to the field of electronics, particularly through his innovative patents, demonstrate his expertise