Zhi Jun Li

Title: Innovations of Zhi Jun Li in Analog-to-Digital Conversion

Introduction

Zhi Jun Li is a prominent inventor based in Guangzhou, China. He has made significant contributions to the field of analog-to-digital conversion, holding three patents that showcase his innovative approach to technology. His work focuses on improving the calibration and timing of multi-channel interleaved analog-to-digital converters (ADCs).

Latest Patents

Zhi Jun Li's latest patents include a matrix processor that generates SAR-searched input delay adjustments to calibrate timing skews in a multi-channel interleaved ADC. This invention involves adding a variable delay to each ADC's input sampling clock, programmed by a Successive-Approximation-Register (SAR) during calibration. The goal is to minimize timing skews between channels. The matrix processor arranges product derivative factors from correlators into a matrix, which is then multiplied by a correlation matrix to output a sign-bit vector. This vector determines when to set or clear tested SAR bits, effectively reducing sampling clock and component timing skews to one LSB among all channels.

Another notable patent focuses on the calibration of timing skews in a multi-channel interleaved ADC through auto-correlation of muxed-together channels in a binary output tree. This invention also adds a variable delay to each ADC's input sampling clock, with the SAR programming the delays during calibration. An auto-correlator generates a correlation error sign for pairs of ADC digital outputs, allowing for precise adjustments to the SAR bits. The calibration process is conducted in a binary tree of mux-correlators, ensuring that timing skews are minimized across both adjacent and remote channels.

Career Highlights

Zhi Jun Li is currently employed at Caelus Technologies Limited, where he continues to develop innovative solutions in the field of analog-to-digital conversion. His expertise in this area has positioned him as a key figure in advancing technology related to ADCs.

Collaborations

Throughout his career, Zhi Jun Li has collaborated with talented individuals such as Chi Fung Lok and Xiaoyong He. These partnerships have contributed to the successful development of his patents and innovations.

Conclusion

Zhi Jun Li's contributions to the field of analog-to-digital conversion through his innovative patents demonstrate his expertise and commitment to advancing technology. His work continues to influence the industry and improve the performance of multi-channel interle