Mark W. Ingalls
700 W. Research Ctr. Blvd.
Fayetteville, AR 72701
voice: (443) 928-3763
I have always liked to make stuff. I have also been blessed with a knack for figuring things out.
My Introduction to Microwaves
When I started out as a tech over a quarter century ago, I had no idea how the capacitors I was making worked. That bothered me, so I borrowed a copy of Matthaei, Young and Jones and tried to read chapters one and two. This seemed to help, but I couldn't seem to keep all that stuff straight in my head. So I decided to write it all out in my own words. The result of that effort eventually became a collection of notes I called Introduction to Microwaves.
Along the way, I began understand how microwave components work and how to measure their properties. I began to have new ideas about 'old' components. I decided to apply to graduate school at Syracuse University. I had no idea how to support a family while studying but fortunately, Professor Arvas offered me a TA job. In addition to studying microwave engineering and computational electromagnetics, I got a chance to try out teaching (see here and here).
My first job after graduate school was designing coaxial resonator (CR) filters. We had big problems with small capacitor values, so I got the idea to use capacitor arrays, which were designed using Sonnet Lite® This led to a new problem: packaging parasitics. So, I got the idea to use linear simulation to de-embed the electrical components (which we could measure) from package characteristics (which we could not measure).
One day my boss asked me to explain how patch antennas worked. I came up with what eventually turned into an introductory paper on Microstrip Antennas for GPS Applications. The problem was, even though we now had a good concept of how patch antennas worked, we still had trouble designing them, especially for embedded applications such as this one. So I started using WIPL-D to design embedded antennas.