Question

Asked Feb 13, 2020

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Calculate the directivity of an isotropic antenna.

Step 1

An isotropic antenna radiates equally in all possible directions.

Directivity is a measure of how efficiently an antenna can radiate in a specified direction. The directivity of any antenna can be computed using the following expression:

Step 2

Since an isotropic antenna radiates equally efficiently in all possible directions, the beam solid angle for an isotropic antenna can be expressed as

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