David B Ruthledge

Title: David B. Ruthledge: Innovator in Power Amplifier Technology

Introduction

David B. Ruthledge is a prominent inventor based in Pasadena, CA. He has made significant contributions to the field of power amplifier technology, holding 2 patents that showcase his innovative approach to enhancing RF signal amplification.

Latest Patents

One of his latest patents is titled "Distributed Circular Geometry Power Amplifier Architecture." This invention discloses a distributed power amplifier topology and device that efficiently and economically enhances the power output of an RF signal to be amplified. The power amplifier comprises a plurality of push-pull amplifiers interconnected in a novel circular geometry. This configuration functions as a first winding of an active transformer, with signal inputs of adjacent amplification devices driven by an input signal of equal magnitude and opposite phase. The topology also includes a secondary winding that matches the geometry of the primary winding, which serves to efficiently combine the power of the individual power amplifiers. This novel architecture enables the design of low-cost, fully-integrated, high-power amplifiers in RF, microwave, and millimeter-wave frequencies.

Career Highlights

David B. Ruthledge is affiliated with the California Institute of Technology, where he continues to advance research in power amplification technologies. His work has been instrumental in developing new methodologies that enhance the efficiency and effectiveness of RF signal amplification.

Collaborations

He has collaborated with notable colleagues, including Ichiro Aoki and Seyed Ali Hajimiri, contributing to a rich environment of innovation and research.

Conclusion

David B. Ruthledge's contributions to power amplifier technology reflect his commitment to innovation and excellence in engineering. His patents and collaborations continue to influence the field significantly.