Gregory Hoke Rowan

Title: Gregory Hoke Rowan: Innovator in Differential Amplification and Transistor Technology

Introduction

Gregory Hoke Rowan is a notable inventor based in Redondo Beach, California. He has made significant contributions to the fields of differential amplification and transistor technology, holding a total of three patents. His work is characterized by innovative approaches to signal processing and device performance.

Latest Patents

One of Rowan's latest patents is the "Multi-octave differential upconverter." This apparatus includes a differential amplifier and a differential mixer. The differential amplifier is designed to receive a multi-octave differential input signal and produce an amplified multi-octave differential output signal. It effectively reduces second-order harmonic distortion through common mode rejection. The differential mixer then multiplies the amplified output signal with a local oscillator input signal, resulting in an up-converted sub-octave differential output signal. Notably, both the multi-octave differential input signal and the up-converted output signal share a substantially similar bandwidth.

Another significant patent is focused on "Transistor devices configured to operate above a first cutoff frequency." This invention provides methods for configuring a transistor device to function at frequencies exceeding a typical first cutoff frequency. The method involves selecting a desired operating frequency range and output power for the transistor, analyzing phase velocity mismatch effects on overall gain, and evaluating the gain regions of various transistor sizes. This comprehensive approach allows for the selection of a transistor that meets the desired output power at the specified operating frequency range.

Career Highlights

Gregory Hoke Rowan is currently employed at Northrop Grumman Systems Corporation, where he applies his expertise in advanced technologies. His work at this leading aerospace and defense company underscores his commitment to innovation and excellence in engineering.

Collaborations

Rowan has collaborated with talented individuals such as Matt Yuji Nishimoto and Jeffrey M Yang. These partnerships have likely contributed to the development of his innovative patents and advancements in technology.

Conclusion

Gregory Hoke Rowan is a distinguished inventor whose work in differential amplification and transistor technology has led to significant advancements in the field. His patents reflect a deep understanding of complex engineering principles and a commitment to innovation.