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Ansoft Designer / Ansys Designer 在线帮助文档：

Generating Reports and Postprocessing >
   Variables, Quantities, and Functions >
       Directive Gain           


Directive Gain

Directive Gain is the ratio of the radiation intensity at a specified observation angle to the average radiation intensity. For the observation angle (q,f), the directivity is:

 

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where U is the radiation intensity, which is defined as:

 

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The average radiation intensity is related to the radiated power by:

 

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Directivity

Directivity is the maximum value of Directive Gain, or:

 

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Reference

Warren Stutzman and Gary Thiele, Antenna Theory and Design, Wiley, 1981.

 



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