Miniature Planar Antenna Design for Ultra-Wideband Systems

Abstract

Demand for antennas that are compact and operate over an ultra-wideband (UWB) frequency range is growing rapidly as UWB systems ofer high resolution imaging capability and high data rate transmission in the order of Gb/s that is required by the next generation of wireless communication systems. Hence, over the recent years the research and development of UWB antennas has been widely reported in literature. The main performance requirements sought from such antennas include: (1) low VSWR of <2; (2) operation over 7.6 GHz from 3 to 10.6 GHz; and (3) good overall radiation characteristics. Signiicant size reduction and low manufacturing cost are also important criteria in order to realize a cost-efective and miniature system. Other desirable requirements include compatibility and ease of integration with RF electronics.

A miniaturized planar antenna with defective ground structure for UWB applications

“…The antenna resonates for low and high frequency so the resolution of the target image will be enhanced. The antenna needs to have satisfactory radiation characteristics and low voltage standing wave ratio value of less than 2 over 3.1 to 10.6 GHz [1]. A compact monopole UWB radiator with the reduced impact of ground plane works well and depicts excellent radiation performance in the far field [2].…”