Parameters of a spherical random antenna array
Abstract
The shape of the beam of a spherical random antenna array  regarded as the simplest volumearray case for space applications  is discussed. A general expression for the array output, as related to a random receiving antenna array consisting of N antenna elements uniformly distributed over a sphere of given radius, is presented and examined. It is assumed that the sensitivity characteristic of each element is uniform. The discussion is not limited to the farfield case only, it is valid also for smaller focusing distances. Attention is given to deriving suitable formulas for the array bandwidth, beamwidth, and hyperfocal distance, which are considered important working parameters of a given array.
 Publication:

Electronics Letters
 Pub Date:
 August 1978
 DOI:
 10.1049/el:19780332
 Bibcode:
 1978ElL....14..495D
 Keywords:

 Antenna Arrays;
 Antenna Radiation Patterns;
 Phased Arrays;
 Spherical Antennas;
 Antenna Design;
 Applications Of Mathematics;
 Bandwidth;
 Electrical Engineering;
 Far Fields;
 Focusing;
 Communications and Radar