Tests sidelobe suppression of a dish antenna using LSQR-optimized dipole placements with variable spacing. More...

Detailed Description

Tests sidelobe suppression of a dish antenna using LSQR-optimized dipole placements with variable spacing.

This script evaluates the effect of dipole ring radius and axial location (z-axis) on sidelobe suppression performance in a parabolic dish antenna. Dipoles are placed in a circular ring, and their influence on far-field patterns is assessed using a least-squares solution to minimize sidelobe energy outside the main beam.

Inputs

Dish parameters: focal length f, diameter d, curvature R, resolution parameters
Feed configuration: circular aperture with radius a, excitation E0, frequency freq
Dipole configuration: number of dipoles N, tested radius range rho_loc_, and z-height z_loc_
Windowing: rectangular window isolating the main beam for sidelobe suppression

Outputs

Relative residual values plotted as a function of dipole radial distance
Radiation pattern comparison (with vs without dipoles)
Visualization of optimal dipole spacing effects on LSQR error

Notes

The script loops over different dipole ring radii and heights to find optimal suppression regions
Only one dipole configuration is visualized in the final field plot
Modify N, z_loc_, or rho_loc_ for further exploration

See also: dish_dipole_lsqr_mulrings_demo.m for static ring configurations