This function calculates physical bounds on Q and D/Q for linearly polarized antennas composed by non-magnetic materials and circumscribed by various geometries as described in:
Gustafsson, Sohl, and Kristensson
Illustrations of new physical bounds on linearly polarized antennas,
IEEE Trans. Antennas Propagat., Vol. 57, No. 5, pp. 1319-1327, 2009.
Physical limitations on antennas of arbitrary shape,
Proc. Roy. Soc. A, Vol. 463, No. 2086, pp. 2589-2607, 2007.
The polarizability is based on analytic results for spheroids and approximations of integral equation (MoM) data with rational
functions for cylinders and rectangles.
Mats Gustafsson (2020). AntennaQ (https://www.mathworks.com/matlabcentral/fileexchange/26806-antennaq), MATLAB Central File Exchange. Retrieved .
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