Title :
A novel omni-directional UWB biconical antenna with band-notched
Author :
Yu, Ding ; Zhai, Weigang ; Xie, Guitao ; Zhang, Longjun
Author_Institution :
Nat. Key Lab. of Sci. & Technol. on Antennas & Microwaves, Xidian Univ., Xi´´an, China
Abstract :
A novel omni-directional Ultra-Wide Band (UWB) biconical antenna with band-notched is described. Firstly, the biconical antenna in the shape of two kinds of bicone placed above a flat ground plane is designed. The antenna operates from 2.4-20 GHz with low Voltage Standing Wave Ratio (VSWR<;2), excluding a band-notched frequency at 5-7GHz. Then in order to improve the structure of the ground plane for miniaturization without degrading the VSWR, ground plane shaping is introduced leading to an antenna that operates from 2.4-20 GHz with low VSWR (<;2) too. The biconical antenna is fed by a coaxial probe through a SMA connector. The length of the proposed biconical element above the ground plane is slightly less than λ/4 at the lowest frequency in the band. Simulation results for VSWR and radiation pattern of the three antennas are presented and discussed.
Keywords :
UHF antennas; antenna feeds; antenna radiation patterns; conical antennas; microwave antennas; omnidirectional antennas; ultra wideband antennas; SMA connector; VSWR; antenna radiation pattern; band-notched frequency; coaxial probe; flat ground plane shaping; frequency 2.4 GHz to 20 GHz; omnidirectional UWB biconical antenna fed; omnidirectional ultrawide band biconical antenna fed; voltage standing wave ratio; Antenna radiation patterns; Directive antennas; Geometry; Shape; Ultra wideband antennas; UWB; band-notched; biconical antenna; omni-directional;
Conference_Titel :
Radar (Radar), 2011 IEEE CIE International Conference on
Conference_Location :
Chengdu
Print_ISBN :
978-1-4244-8444-7
DOI :
10.1109/CIE-Radar.2011.6159762
