Title :
Fast power synthesis for reconfigurable arrays with dynamic range ratio reduction
Author :
Comisso, Massimiliano ; Vescovo, Roberto
Author_Institution :
Dept. of Ind. Eng. & Inf. Technol., Univ. of Trieste, Trieste, Italy
Abstract :
This paper presents a fast method of power synthesis for reconfigurable conformal antenna arrays that allows one to generate a set of desired radiation patterns, each transformable into any of the others by modifying only the phase of each array element, while reducing the Dynamic Range Ratio (DRR) of the excitation amplitudes of the array elements. The method adopts a set of auxiliary phase patterns to reformulate the original power synthesis problem as a field synthesis one. A functional involving the desired amplitude patterns and the array excitations is iteratively minimized by updating the phase patterns and the excitations. The results show that the method allows beam scanning operations involving also the suppression of multiple fixed interference regions, with acceptable CPU times.
Keywords :
antenna arrays; antenna radiation patterns; conformal antennas; interference suppression; CPU times; amplitude patterns; antenna radiation patterns; array elements; array excitations; auxiliary phase patterns; beam scanning operations; dynamic range ratio reduction; excitation amplitudes; fast power synthesis; field synthesis; multiple fixed interference regions suppression; reconfigurable conformal antenna arrays; Antenna radiation patterns; Dynamic range; Phased arrays; Shape;
Conference_Titel :
Electromagnetics in Advanced Applications (ICEAA), 2011 International Conference on
Conference_Location :
Torino
Print_ISBN :
978-1-61284-976-8
DOI :
10.1109/ICEAA.2011.6046369