Kuan-Dar Chen

Title: Kuan-Dar Chen: Innovator in Sigma-Delta Converters

Introduction

Kuan-Dar Chen is a notable inventor based in Tainan, Taiwan. He has made significant contributions to the field of signal processing, particularly in the development of sigma-delta converters. With a total of 2 patents, his work has advanced the technology used in analog-to-digital and digital-to-analog conversion.

Latest Patents

Kuan-Dar Chen's latest patents include innovative methods for enhancing the performance of sigma-delta converters. One of his patents, titled "Multibit sigma-delta converters employing dynamic element matching with reduced baseband tones," discloses a method for reducing baseband tones and intermodulation distortions in multibit sigma-delta converters. This invention features an N-level sigma-delta analog-to-digital converter that includes an analog loop filter, an N-level quantizer, element selection logic, an internal N-level digital-to-analog converter (DAC), and a decimation filter. By adding k extra unit elements to the internal N-level DAC, the invention shifts the modulator tones and intermodulation distortions outside the baseband without altering the quantization levels of the DAC.

Another significant patent is the "Stabilizing mechanism for sigma-delta modulator," which introduces a technique known as Internal Linear Feedback (ILF) for stabilizing high-order sigma-delta modulators. This technique employs an overload detector and a selector to activate the ILF mode when overload is detected, ensuring the modulator remains stable during operation.

Career Highlights

Throughout his career, Kuan-Dar Chen has worked with various organizations, including the National Science Council. His expertise in signal processing and modulation techniques has positioned him as a key figure in the development of advanced converter technologies.

Collaborations

Kuan-Dar Chen has collaborated with notable colleagues such as Tai-Haur Kuo and Wen-Chyi Wang. These collaborations have contributed to the advancement of research and innovation in the field of sigma-delta modulation.

Conclusion

Kuan-Dar Chen's contributions to the field of sigma-delta converters demonstrate his innovative spirit and technical expertise. His patents reflect a commitment to improving signal processing technologies, making a lasting impact on the industry.