Lobe
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. |
Lobe
</dt>
An element of a beam of focused
radio energy. Lobes define surfaces of equal power
density at varying distances and directions from the radiating
antenna.
</dd>
Their configuration is governed by two factors: (a) the
geometrical properties of the antenna reflector and feed system;
and (b) the mutual interference between the direct and reflected
rays for an antenna situated above a reflecting surface. In addition
to the major lobes of an antenna system, there exist side lobes
(or minor lobes) that result from the unvoidable finite size
of the reflector. They exist at appreciable angles from the axis
of the beam, and, while objectionable, they normally contain
much less energy than that in the major lobe. See radiation
pattern.
</dd>
References
This article is based on NASA's Dictionary of Technical Terms for Aerospace Use
