Cross-spectral densities of array elements for folded dipole and loop antennas

When a loop or folded dipole antenna is placed in a noise field the resultant mean-square noise current is a function of the cross-spectral densities between the different segments of the antenna. Earlier work on the evaluation of cross-spectral densities between the collinear segments of a dipole placed in an isotropic noise field is here extended to include the parallel and orthogonal segments of rectangular loop and folded dipole antennas.