Abstract: We present an algorithm that adapts the mature stack and draw (SaD) methodology for fabricating the exotic equiangular spiral photonic crystal fiber (ES-PCF). The principle of Steiner chains ...

Abstract: An equiangular tight frame (ETF) is a set of equal norm vectors in a Euclidean space whose coherence is as small as possible, equaling the Welch bound. Also known as Welch-bound-equality ...

We introduce the notion of noncommutative equiangular lines and derive noncommutative versions of fundamental van Lint-Seidel relative and Gerzon universal bounds.

Thanks @Magwos, sounds like a very useful feature. We can certainly add this. Note that MW/DH equiangular sampling is already supported but I appreciate you probably want exactly the same sampling as ...

This file type includes high resolution graphics and schematics when applicable. Archimedean spiral antennas (ARSAs) are attractive for a variety of RF and microwave applications. They have been used ...

Shea Gunther is a writer, entrepreneur, and podcaster living in Portland, Maine. He covers topics such as renewable energy, climate change, and nature. Romanesco broccoli (which, despite its name, is ...