pencil beam antenna
Also found in: Acronyms.
pencil beam antenna[′pen·səl ‚bēm an‚ten·ə]
Unidirectional antenna designed so that cross sections of the major lobe formed by planes perpendicular to the direction of maximum radiation are approximately circular.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.