Title :
Scanning of cosecant beams generated by a tilted planar array of nonisotropic radiators
Author :
Kumar, Sam Jeba ; Chakraborty, Arpan ; Das, B.N.
Author_Institution :
Dept. of Electron. & Electr. Commun. Eng., Indian Inst. of Technol., Kharagpur, India
fDate :
6/1/1991 12:00:00 AM
Abstract :
A method of scanning a one-dimensional shaped pattern generated by a tilted circular planar array of nonisotropic elements is presented. A method of synthesis of phase function for a desired cosecant pattern and specified amplitude distribution for excitation of the elements of the array is presented. The phase distribution required in the perpendicular direction for retaining the beam shape in the scanned plane is determined. Computed results on the phase distribution and radiation pattern are presented. The appropriate correction is applied to get a better agreement between the realized and desired patterns in this scanned position of the beam
Keywords :
antenna phased arrays; antenna radiation patterns; amplitude distribution; cosecant beams scanning; cosecant pattern; excitation; nonisotropic elements; nonisotropic radiators; one-dimensional shaped pattern; phase distribution; phase function; radiation pattern; tilted circular planar array; Antenna radiation patterns; Apertures; Curve fitting; Distributed computing; Earth; Phased arrays; Planar arrays; Shape control;
Journal_Title :
Antennas and Propagation, IEEE Transactions on
