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IEEE Microwave Magazine – November 2020

The November issue of the IEEE Microwave Magazine is out! This issue is another “Breadth of MTT” issue so we get a tour of the variety of work within the MTT. And this tour includes an extra dimension on an old friend, some fundamental mathematics applied to circuit problems, and a very practical marriage of math and physics. Th extra dimension on an old friend is looking at the Smith Chart from a 3D perspective. Who says two dimensions are enough and what insights can we gain? Our second feature applies the mathematics of symmetry and periodic structures which may have started with the study of crystalline structures and moved to semiconductor lattices but certainly applies to transmission line structures and even periodically sampled digital filters. Our final features revisits that most useful device, which probably began life as magic for telephone operation, also a speed bump for antenna designers and rapidly became essential for balanced amplifier and mixer designers but now gets in the middle of our high speed differential circuitry and network analysis – the balanced to unbalanced converter.

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