John W Eldridge

Title: Innovations of John W Eldridge

Introduction

John W Eldridge is a notable inventor based in Lakewood, CA (US). He has made significant contributions to the field of radio frequency (RF) circuit elements. His innovative approach has led to advancements that improve the performance and cost-effectiveness of RF circuits.

Latest Patents

Eldridge holds a patent for a "Surface coated RF circuit element and method." This invention introduces extra loss in coupled cavity and klystron RF circuits by applying a surface coating to selected parts of circuit elements used in these circuits. The coating is applied in the form of a slurry, which is then sintered. The slurry comprises a mixture of an iron-base powder, such as stainless steel, and a dielectric glass ceramic, suspended in a binder dissolved in a solvent. Circuits with the loss coating are easier to match than by other prior art techniques. The loss coating of the invention reduces the fabrication cost of coupled-cavity traveling wave tubes while improving performance by minimizing gain ripple. Higher average power operation is possible due to the elimination of loss buttons previously employed in the prior art.

Career Highlights

Eldridge has worked at Hughes Aircraft Company, where he has been able to apply his innovative ideas in practical applications. His work has contributed to the advancement of RF technology, making significant impacts in the industry.

Collaborations

Eldridge has collaborated with notable coworkers such as Sunder S Rajan and Ivo Tammaru. Their combined expertise has fostered an environment of innovation and creativity in their projects.

Conclusion

John W Eldridge's contributions to RF circuit technology exemplify the spirit of innovation. His patent for surface coated RF circuit elements showcases his ability to enhance performance while reducing costs. His work continues to influence the field and inspire future advancements.