Jeff M Alexander

Title: Jeff M Alexander: Innovator in Microwave Technology

Introduction

Jeff M Alexander is a notable inventor based in Clarkston, GA (US). He has made significant contributions to the field of microwave technology, holding 2 patents that showcase his innovative approach to engineering.

Latest Patents

One of his latest patents is the Electronically Scanned Ferrite Line Source. This invention involves a ferrite scanning line source formed of a ferrite toroid and one or more dielectric slabs mounted to a side of the toroid. A signal propagating through the waveguide is phase-shifted by the magnetization of the toroid. As the signal propagates further down the toroid, the phase shift applied to the signal increases. Radiators or coupling ports are created by slots cut in a wall of the waveguide. The phase of the signal radiating from each slot in the line source is shifted from the signals emanating from the preceding and following slots. By strategically locating the slots along the line source, a composite beam formed by the energy radiating from each slot can be tilted or scanned to a desired direction. Additionally, the amount of phase shift applied to the signal by the waveguide depends on the magnetic state of the phase shifter. By altering the magnetic state of the phase shifter using a latch wire, the direction of the beam emanating from the line source can be scanned, such as by ±20 degrees.

Another significant patent is the Hybrid Mode RF Phase Shifter and Variable Power Divider. This invention features a miniaturized waveguide mode ferrite RF phase shifter that efficiently transitions to a matched impedance microstrip transmission line mode at either end. The result is an ultra-small, efficient, and lightweight essentially 'planar' phase shifter device with wide applications in the microwave industry.

Career Highlights

Throughout his career, Jeff has worked with several prominent companies, including Electromagnetic Sciences, Inc. and Ems Technologies, Inc. His work has significantly impacted the microwave technology sector, leading to advancements in various applications.

Collaborations

Jeff has collaborated with notable individuals in his field, including Roger G Roberts and James P Montgomery. Their combined expertise has contributed to the development of innovative technologies.

Conclusion

Jeff M Alexander is a distinguished inventor whose work in microwave technology has led to significant advancements. His patents reflect his