Title :
A UWB Antenna for Impulse Radio
Author :
Lestari, A.A. ; Yarovoy, A.G. ; Ligthart, L.P. ; Rahardjo, E.T.
Author_Institution :
Int. Res. Centre for Telecom & Radar, Delft Univ. of Technol.
Abstract :
A UWB antenna, which is adopted from a ground penetrating radar (GPR) antenna, is proposed for impulse radio application. The antenna has dimensioning of 7 cm by 1.5 cm and is based on a modified bow-tie structure. It employs improved resistive loading for transmission of 0.2-ns monocycles with minimal ringing. The antenna radiation efficiency is enhanced by creating discontinuities in the antenna that serve as secondary sources of radiation. Numerical analysis of the antenna was performed using the FDTD method and the method of moments. It has been found that antenna ringing is adequately suppressed after less than 3 times the pulse radiation. This will set the potential limit of the data rate at more than 1 Gbit/s. Furthermore, the antenna shows a relatively flat gain and input impedance in the 3 - 10 GHz frequency range. Within this bandwidth the antenna is omni-directional and has stable radiation pattern
Keywords :
antenna radiation patterns; bow-tie antennas; finite difference time-domain analysis; method of moments; microwave antennas; ultra wideband antennas; ultra wideband communication; 0.2 ns; 3 to 10 GHz; FDTD method; UWB antenna; antenna radiation efficiency; impulse radio; method of moments; modified bow-tie structure; omni-directional; pulse radiation; Antenna radiation patterns; Bandwidth; Finite difference methods; Frequency; Ground penetrating radar; Impedance; Moment methods; Numerical analysis; Radar antennas; Ultra wideband antennas; UWB antenna; UWB communications; bow-tie antenna; impulse radio;
Conference_Titel :
Vehicular Technology Conference, 2006. VTC 2006-Spring. IEEE 63rd
Conference_Location :
Melbourne, Vic.
Print_ISBN :
0-7803-9391-0
Electronic_ISBN :
1550-2252
DOI :
10.1109/VETECS.2006.1683344
