An optimized shaped beam synthesis technique and its implementation

The Orchard-Elliott shaped beam synthesis technique is modified to improve its performance. The new algorithm can synthesise shaped beams with a large number of array elements and very low ripple level, as small as 0.003 dB, in the shaped region and a controlled sidelobe in the sidelobe region, without convergence problems. A new technique for the implementation of shaped beam antennas is also proposed. In this technique, both phase and amplitude weighting is accomplished in one block using sampling of signals over antenna elements by sampling pulses with adjusted time delays and duty cycles.