Grant Andrew Ellis

Title: Grant Andrew Ellis: Innovator in Human Identification and Microwave Technology

Introduction

Grant Andrew Ellis is a notable inventor based in Seattle, WA (US). He holds a total of 6 patents that showcase his contributions to technology, particularly in human identification systems and microwave power amplifiers. His innovative work has the potential to impact various fields, including security and telecommunications.

Latest Patents

One of his latest patents is a "System and method for detecting, monitoring and identifying human beings." This human identifier system is capable of distinguishing between multiple known individuals. It includes a first antenna and a second antenna, with the second antenna operably selecting the distance to allow multiple people to walk, run, or move between the antenna pairs. The system also features a radio frequency transmitter for generating multiple radio signals and a radio frequency receiver for receiving these signals. A data processor is connected to the receiver, processing the received signals to identify individuals moving between the antennas.

Another significant patent is the "High efficiency linear microwave power amplifier." This invention involves a post-distortion method for cascading amplifier stages in a two-stage microwave power amplifier. It utilizes a dynamic biasing method to correct nonlinearity in the power amplifier output. The first or driver stage is biased in a near-A region with low distortion, while the second or power stage is biased in a near-C region for high efficiency. The dynamic biasing scheme modulates the source to drain voltages of the transistors based on the harmonics in the amplifier output, minimizing harmonics and correcting non-linearity.

Career Highlights

Grant has worked with several reputable organizations, including Hrl Laboratories and the National University of Singapore. His experience in these institutions has contributed to his expertise in the fields of human identification and microwave technology.

Collaborations

Throughout his career, Grant has collaborated with notable professionals such as Miroslav Micovic and Keh-Chung Wang. These collaborations have likely enriched his work and led to innovative advancements in his projects.

Conclusion

Grant Andrew Ellis is a distinguished inventor whose work in human identification systems and microwave technology demonstrates his innovative spirit. His patents reflect a commitment to advancing technology and improving efficiency in various applications.