In plain English
Lot's field is called applied electromagnetics — a branch of engineering that deals with how invisible waves of energy (like radio waves and microwaves) travel through the air, and how we can capture or send them with devices called antennas.
Antennas are everywhere. They're inside your cellphone, your car's GPS, your Wi-Fi router, every TV satellite dish, and every weather and communications satellite orbiting the Earth. Making them smaller, cheaper, and better is one of the great unsung engineering challenges of the modern age — and Lot has been a world leader at solving it.
Here are some of the ways his work has changed daily life:
Smaller satellite dishes
In the 1970s and 80s, satellite dishes were enormous — the size of small swimming pools — and they cost a fortune. Lot's research helped shrink them dramatically. His work on miniaturizing satellite terminals became the industry standard worldwide. The compact satellite dishes you see on homes today, and the even smaller ones on boats, airplanes, and military vehicles, trace their lineage back to innovations from his lab.
Cellphones without the "stick" antenna
If you're old enough to remember cellphones with a little antenna sticking out the top that you had to pull up to get a signal, you've seen the problem Lot helped solve. Thanks to advances in antenna design that he championed, cellphones today have antennas hidden inside the body of the phone. His work contributed to making wireless communication sleeker, more reliable, and more powerful.
Eyes on Earth — RADARSAT
Lot helped design advanced antennas for RADARSAT, the Canadian Space Agency's flagship Earth-observation satellite program. RADARSAT images are used to monitor ice in the Arctic, track oil spills, help with disaster relief, map agriculture, and support Canadian sovereignty in the North. His antennas are part of what makes those pictures possible from hundreds of kilometres up in space.
Helping keep Canadians safe
Lot's expertise has also been called on for national defence and humanitarian work. He has helped develop radars that can detect moving ships in the ocean and vehicles on land. Perhaps most remarkably, he designed special robotic antennas that help peacekeeping forces find and safely disable landmines — technology with the potential to save lives long after conflicts end.
The invisible wins
Much of Lot's impact lives in technical breakthroughs the average person will never see but uses every day — inventions like virtual arrays (a clever way to get better performance out of antennas without making them bigger), low-loss materials that let signals travel more efficiently, and miniaturization techniques that keep shrinking the devices in our pockets.
He has published hundreds of research papers and holds numerous patents. His work is cited by engineers all over the world who are building the next generation of communications technology.