Effective Area
From ExoDictionary
This definition page has been automatically generated. You can help ExoDictionary by expanding, updating, or correcting it. |
| This autostub has not yet had its initial copyediting proof and may contain significant formatting and even factual errors. You can improve Exodictionary by cleaning up the page markup and verifying that the definition is correct and then removing this tag. |
| This autostub has not yet had its initial categorization proof and may be categorized incorrectly. You can improve Exodictionary by removing inappropriate categories and then removing this tag. |
Effective Area
</dt>
1. In antenna design, the ratio of the received
power available at the terminals of an antenna to the
power per unit area in the incident wave. For all antennas, effective area
A is related to gain G at a given wavelength Missing Image:img src="SP7-e_files/lambdasm.gif" by the equation:
aperture.
</dd>
The effective area of an ideal antenna is equal to its physical area
S. In practice, A/S for microwave antennas is always less than
one, a representative value for paraboloids being 0.6.
</dd>
2. Same as scattering cross section.
</dd>
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
