Abstract

The concept of source currents of a radiating source can be employed to express its directivity in some particular cases analytically. For an antenna array, this concept can be extended to the concept of a generalized directivity based on self- and mutual radiation intensities, self- and mutual radiated powers and excitation currents of array elements. These concepts were applied to example of the array of two isotropic radiators above perfect electric conductor (PEC) ground, where the PEC ground is simulated by mirror image of the original image of isotropic radiators.

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