Analysis theory for the shaped-beam doubly curved reflector antenna

An analysis theory of the shaped-beam doubly curved reflector antenna is described. The analysis computes the far-field patterns by calculating the current density distribution on the nonanalytic surface that the shaped-beam doubly curved reflector presents using the physical optics vector approximation. The presented theory utilizes a computer solution approach to achieve an accurate knowledge of the principal and cross-polarization elevation and azimuth patterns by numerically integrating the field contributions over the entire reflector surface. A comparison of the computed and measured principal plane patterns is shown.