Stewart L Cummings

Title: Stewart L Cummings: Innovator in RF Amplification Technology

Introduction

Stewart L Cummings is a notable inventor based in Oceanside, CA (US). He has made significant contributions to the field of radio frequency (RF) amplification technology. His innovative work has led to the development of a unique patent that addresses challenges in signal processing.

Latest Patents

Cummings holds a patent for a device known as the second-order predistorter. This invention comprises two RF amplifiers and three 180-degree hybrid combiner/splitters. The RF sinusoidal input is split into two separate signals that have equal amplitudes but are 180 degrees out of phase. Each signal is processed through separate moderately linear amplifiers, resulting in outputs that consist of the amplified input signal and second-order distortion components produced by the amplifiers' nonlinearities. The outputs are then combined to produce two different outputs, consisting of the sum and difference of the amplified signals. The difference signal contains the desired signal, while the sum signal consists solely of the second-order distortion terms. The final output signal is taken from either the sum or difference port, depending on the desired relative phase between the amplified signals.

Career Highlights

Cummings is currently employed at Tacan Corporation, where he continues to innovate in the field of RF technology. His work has been instrumental in advancing the capabilities of RF amplification systems.

Collaborations

One of his notable coworkers is Mark E Tucker, with whom he has collaborated on various projects within the company.

Conclusion

Stewart L Cummings is a distinguished inventor whose contributions to RF amplification technology have made a significant impact in the field. His patent for the second-order predistorter exemplifies his innovative spirit and dedication to advancing technology.