WIDEBAND OMNIDIRECTIONAL OPERATION MONOPOLE ANTENNA

Abstract

This paper presents a square cylindrical monopole antenna easily fabricated using a cross-shaped metal plate for wideband omnidirectional operation. A prototype of the proposed antenna with a cross-sectional area of 8 × 8 mm2 is implemented, and the antenna provides a wide operating bandwidth of about 7.5 GHz (1.8–9.4 GHz here), making it very promising for WMAN operation with the 802.16e standard in the 2 to 6 GHz. In addition, over the operating bandwidth, the antenna shows very good omnidirectional radiation patterns.