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Definition: isotropic


The properties of a material that are the same in all directions. For example, an isotropic antenna radiates the same power in all directions. In practice, antennas cannot be 100% isotropic. However, a perfect isotropic antenna, called an "isotropic radiator," can be calculated, and it is used as a basis for measuring the signal strength of real antennas. Contrast with anisotropic. See dBi.