https://cmsa.fas.harvard.edu/event/2-15-2022-combinatorics-physics-and-probability-seminar/
Equiangular lines and regular graphs - CMSA
Mar 4, 2024 - Abstract: In 1973, Lemmens and Seidel asked to determine N_alpha(r), the maximum number of equiangular lines in R^r with common angle arccos(alpha). Recently,...
linesregulargraphscmsa
https://www.mathworks.com/help/antenna/ug/reflector-backed-equiangular-spiral.html
Reflector Backed Equiangular Spiral - MATLAB & Simulink Example
The spiral antenna is an inherently broadband, and bidirectional radiator.
matlab simulinkreflectorbackedspiralexample