Question
Asked Feb 13, 2020
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Calculate the directivity of an isotropic antenna.

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Expert Answer

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:

Electrical Engineering homework question answer, step 1, image 1

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

Electrical Engineering homework question answer, step 2, image 1

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