Yuchoi Francis Lok

Title: Innovations by Yuchoi Francis Lok in Phased Array Radar Technology

Introduction

Yuchoi Francis Lok is a prominent inventor based in Framingham, MA, known for his significant contributions to phased array radar technology. With a total of 10 patents to his name, Lok has made strides in enhancing radar systems, focusing on innovative techniques for beam formation and array design.

Latest Patents

Among his latest patents, Lok has developed a groundbreaking "Phased Array Antenna Using Stacked Beams in Elevation and Azimuth." This radar system leverages a rotating antenna array, where rows exhibit dispersive properties feeding multiple radiating elements. Notably, the design incorporates dual polarized radiating elements and utilizes beam spoiling to create an unfocused transmit beam that effectively covers the entire elevation range of interest. Additionally, during receiving, digital beam forming enables the achievement of a stack of narrow-width receive beams in elevation, while frequency scanning facilitates stacked beams in azimuth.

In another significant contribution, he has designed methods and apparatus for a "Fragmented Phased Array Radar." This innovation features a phase array radar system with a fragmented array formed by subarrays arranged in a generally rectangular shape, meticulously disposed on the surface of a truncated cone or dome. This clever configuration creates intentional gaps between adjacent segments or subarrays, optimizing antenna performance.

Career Highlights

Yuchoi Francis Lok has had an impressive career, working with esteemed organizations such as Raytheon Company and Raytheon Canada Limited. His experience at these companies has allowed him to deepen his expertise in radar technologies and their applications, propelling his innovative capabilities.

Collaborations

Throughout his career, Lok has collaborated with influential figures in the field, including notable coworkers such as Peter R. Drake and Eli Brookner. These collaborations have contributed to his advancements in radar systems and offered valuable insights that have facilitated his inventive processes.

Conclusion

Yuchoi Francis Lok stands out as a dedicated inventor in the realm of phased array radar technology. His pioneering patents and collaborative efforts have not only advanced technical knowledge but also enhanced the capabilities of radar systems, reinforcing his legacy in the field of innovation and invention.