Properties of density tapered arrays
Abstract
The properties of density tapered arrays designed with deterministic and statistical techniques are reviewed. The properties of statistically designed arrays are described as a function of main beam scan, average sidelobe level, model amplitude distribution, thinning, and array and aperture size. It is found that without additional signal processing large apertures are needed to produce low sidelobe levels. For example, the minimum circular aperture needed to produce a 40 dB peak sidelobe level has a diameter of 178 wavelengths. Statistical density tapering should be used to design arrays for applications with scanned main beams, since their peak sidelobe levels remain approximately constant as the main beam is scanned. The sidelobe levels of the deterministic array increase as the mainbeam is scanned.
 Publication:

NASA STI/Recon Technical Report N
 Pub Date:
 March 1988
 Bibcode:
 1988STIN...9012810B
 Keywords:

 Antenna Arrays;
 Antenna Design;
 Antenna Radiation Patterns;
 Apertures;
 Tapering;
 Amplitude Distribution Analysis;
 Sidelobe Reduction;
 Signal Processing;
 Communications and Radar