Henry E Lee

Title: Innovations of Henry E. Lee: A Pioneer in RF Tag Technology

Introduction

Henry E. Lee, an accomplished inventor based in Ellicott City, MD, has made significant contributions to the field of radio frequency (RF) technology, holding 10 patents to his name. His innovative work is particularly relevant in the realms of defense and communication systems, showcasing his expertise in designing sophisticated methods for tag communication and radar systems.

Latest Patents

Lee's recent inventions include a groundbreaking 2-D range hopping spread spectrum encoder/decoder system for RF tags. This system utilizes an airborne radar that interrogates tags situated on friendly ground vehicles. When interrogated by a downlink signal from the radar, these tags transmit a low-level uplink message signal designed to appear noise-like, thus ensuring they evade enemy detection. This is achieved by retransmitting a time-delayed and phase-shifted version of the radar's pulse. The digital RF tag captures alternating pulses from the radar and sends back a digitally coded spread spectrum pulse during each intervening pulse, incorporating a pseudo-random delay and phase for added security.

Another noteworthy patent is the tag communication protocol and system, which provides an efficient method for communicating with RF tags. This involves alternating the RF tag between low power and scan modes, significantly reducing power consumption and thus prolonging battery life. The radar sends a "wake-up" call during the scan mode, which prompts the RF tag to receive messages and respond accordingly, optimizing communication efficiency.

Career Highlights

Henry E. Lee has a robust professional background, having worked for prestigious organizations such as Westinghouse Electric Corporation and Northrop Grumman Corporation. His experiences in these companies have played a vital role in shaping his innovations in RF technology and communication systems.

Collaborations

Throughout his career, Lee has collaborated with esteemed colleagues including Martin J. Decker and Francisco J. Guillen. These collaborations have not only fostered innovation but have also led to the successful development and implementation of cutting-edge technologies in their field.

Conclusion

Henry E. Lee's contributions to RF technology demonstrate his ingenuity and commitment to innovation. Through his patents, he has enhanced communication systems, particularly for military applications, significantly improving the safety and efficiency of RF tag technology. As he continues to push the boundaries of invention, his work stands as a testament to the impact of visionary thinkers in the engineering and technology sectors.