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Conclusions

The design examples presented only scratch the surface of the possibilities that convex optimization has to offer in wideband array pattern design. The key is the flexibility it affords to custom tailor sidelobe structure and main-beam shape to detailed system requirements. In the spirit of the angle- and frequency-limited region of extra suppression in the final design, a design can accommodate known features such as fixed clutter (a notch in angle) or sources of narrowband interference (a notch in both angle and frequency). In principle this approach can be generalized to multidimensional arrays of arbitrary geometry, including sparse arrays and arrays with random element placement. Work remains, however, in devising efficient optimization formulations to make this approach practical for arrays exceeding a few hundred elements.



Dan Scholnik 1999-11-16