Radiation properties of spherical arrays
Abstract
The array formed by elements placed on the surface of a sphere is studied by means of numerical calculations. The elements are assumed to be ideal and the mutual couplings can thus be neglected. By using a uniform element distribution and an active region moving with the main beam, the radiation properties can be kept unchanged within a scan coverage of more than a hemisphere. The grating lobes still remain small even if the element spacings are of the magnitude of a wavelength. Variations in the element field pattern have less influence than in a planar array. In some cases the spherical array can be thinned.
- Publication:
-
4th European Microwave Conference
- Pub Date:
- 1974
- Bibcode:
- 1974eumw.conf..283J
- Keywords:
-
- Antenna Arrays;
- Antenna Design;
- Antenna Radiation Patterns;
- Microwave Antennas;
- Sidelobe Reduction;
- Gratings (Spectra);
- Hemispheres;
- Scanning;
- Spherical Antennas;
- Steerable Antennas;
- Communications and Radar