Title :
Broad band synthesis of a shaped beam pattern for a non-uniformly spaced, phase constrained linear array
Author :
Nelson, W.S. ; Buckley, M.J.
Author_Institution :
Westinghouse Electr. Corp., Baltimore, MD, USA
Abstract :
The amplitudes, phases, and positions of the radiating elements of a non-uniformly spaced array which produce a 50% bandwidth csc/sup 2/ shaped beam pattern are found by an iterative search over constrained space. Implementation of the design in an overlay coupled stripline end fire array with broad band phase shifters is discussed. In addition to its broad bandwidth, the design discussed in this paper compared to conventional designs with uniform spacing has greater than or equal to aperture efficiency, less pattern ripple, less element-to-element magnitude and phase variation, and less power delivered to the load.
Keywords :
antenna radiation patterns; iterative methods; linear antenna arrays; search problems; amplitudes; aperture efficiency; broad band phase shifters; broad band synthesis; delivered load; design; iterative search; magnitude variation; nonuniformly spaced phase constrained linear array; overlay coupled stripline end fire array; pattern ripple; phases; positions; radiating elements; shaped beam pattern; Algorithm design and analysis; Apertures; Bandwidth; Couplers; Fires; Pattern analysis; Phase shifters; Phased arrays; Postal services; Stripline;
Conference_Titel :
Antennas and Propagation Society International Symposium, 1996. AP-S. Digest
Conference_Location :
Baltimore, MD, USA
Print_ISBN :
0-7803-3216-4
DOI :
10.1109/APS.1996.549716
