Jeffrey H Derby

Title: **Inventor Profile: Jeffrey H Derby**

Introduction

Jeffrey H Derby is a prominent inventor based in New York, NY, known for his significant contributions to communication technology. With a portfolio that includes three innovative patents, Derby has made notable advancements in signal processing and communication systems.

Latest Patents

Among his latest inventions are the following patents:

1. **Repeater Feedback Circuit**

This invention focuses on a bilateral transmission line repeater that separates opposite directions of transmission into different frequency bands. The amplifiers employed in the repeater are equipped with an automatic gain control circuit, enabling precision in managing gain. Notably, the gain control for the inward bound amplifier is regulated by an automatic gain control signal sourced from both the outward and inward bound signals. A current mirror circuit facilitates feedback around the gain control amplifier to prevent loading issues on the amplifier output.

2. **Repeater Overload Circuit**

Derby's second notable patent describes a bilateral repeater designed for communication transmission lines. It effectively amplifies signals while maintaining separation between frequency bands. The repeater is powered through a power conversion unit that harnesses line potential. Additionally, it incorporates three-electrode gas tube breakdown devices connected across each conductor of the transmission line, with the third electrodes cross-connected without grounding.

Career Highlights

Jeffrey H Derby has worked at Bell Telephone Laboratories, a leading company in telecommunications research and development. His tenure there has allowed him to collaborate on cutting-edge technologies that have shaped the future of communication systems.

Collaborations

Throughout his career, Derby has collaborated with notable professionals in the field, including Tadikonda N Rao and Barry Sheldon Bosik, adding to the richness of his work and innovations.

Conclusion

Jeffrey H Derby stands out as an influential inventor dedicated to advancing communication technology. His inventive solutions, particularly in repeater technology, reflect his commitment to innovation in the field. With his ongoing contributions, Derby continues to impact how we transmit and process communication signals.