The least mean square error of the constrained least-squares optimization method is studied. The phases of non-zero goal values and the phases of non-zero constraint values can be selected by a fast iteration for optimum fit to the goal function amplitude. This kind of modified least-squares optimization method opens up a fast and robust synthesis method for large conformal antenna arrays. Constraints can be written also for the element excitation amplitudes and a phase synthesis with pre-defined amplitudes can be done. Iterative weight-correction technique is used for accurate side-lobe control. Synthesis examples of two-dimensional elliptical and large three-dimensional conformal antenna arrays are presented.
- antenna arrays
- conformal antennas
- least squares methods
Vaskelainen, L. (2007). Constrained least-squares optimization in conformal array antenna synthesis. IEEE Transactions on Antennas and Propagation, 55(3), 859-867. https://doi.org/10.1109/TAP.2007.891860