Title :
Design of a Novel Ultrawideband Wire Antenna With Enhanced Bandwidth
Author :
Yang, Zhang ; Jinghui, Qiu ; Tenigeer ; Lin, Shu
Author_Institution :
Sch. of Electron. & Inf. Eng., Harbin Inst. of Technol., Harbin, China
fDate :
7/4/1905 12:00:00 AM
Abstract :
In this letter, a novel ultrawideband wire antenna with enhanced bandwidth is presented. The proposed antenna consists of a dipole structure, and each pole is formed by connecting four semicircular closed wires. A sphere crown and several rods are introduced to improve the impedance match during an ultrawide band. Experimental results show that the antenna achieves good impedance match from 0.45 to 28.4 GHz with the voltage standing wave ratio (VSWR) less than 2 while maintaining omnidirectional radiation pattern. The parameters that affect the impedance match of the antenna are also investigated. The proposed wire antenna is highly suitable for applications of wideband systems.
Keywords :
UHF antennas; antenna radiation patterns; dipole antennas; microwave antennas; omnidirectional antennas; ultra wideband antennas; ultra wideband communication; wire antennas; dipole structure; frequency 0.45 GHz to 28.4 GHz; omnidirectional radiation pattern; semicircular closed wire; ultra wideband wire antenna; Antenna measurements; Antenna radiation patterns; Dipole antennas; Impedance; Ultra wideband antennas; Wires; Omnidirectional radiation; ultrawideband (UWB); wire antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2012.2203349
