Waveguide Antennas May 2026
[ G = \frac4\pi A\lambda^2 \eta_a ] where (A) = aperture area, (\eta_a) ≈ 0.5–0.7 for typical horns.
[ G = \frac4\pi A\lambda^2 \eta_a ] where (A) = aperture area, (\eta_a) ≈ 0.5–0.7 for typical horns.