Title :
Improved ultra-wide bandwidth bow-tie antenna with metamaterial lens for GPR applications
Author :
Ajith, K.K. ; Bhattacharya, Avik
Author_Institution :
Dept. of Electron. & Electr. Commun. Eng., Indian Inst. of Technol. Kharagpur, Kharagpur, India
fDate :
June 30 2014-July 4 2014
Abstract :
A new resistively loaded bow-tie antenna which can operate from 300 MHz to more than 3 GHz bandwidth is proposed. The proposed antenna employs a metamaterial lens to improve the forward gain and front-to-back ratio. The antenna radiates pulses with minimal late-time ringing and high peak amplitude. A stable radiation pattern obtained from 300 MHz to 2 GHz, makes it suitable for time domain as well as stepped frequency continuous wave (SFCW) GPR applications. The antenna is characterized by measurements of return loss, transmission scattering parameter, radiation pattern, gain, front-to-back ratio, and GPR B-scan with object buried under soil. The measured results are in good agreement with the simulation results.
Keywords :
UHF antennas; antenna radiation patterns; bow-tie antennas; ground penetrating radar; metamaterial antennas; ultra wideband antennas; GPR B-scan; SFCW GPR applications; frequency 300 MHz to 2 GHz; front-to-back ratio; late-time ringing; metamaterial lens; radiation pattern; resistively loaded bow-tie antenna; stepped frequency continuous wave; time domain GPR applications; transmission scattering parameter; ultrawide bandwidth bow-tie antenna; Antennas; Lenses; Soil; Bow-tie antenna; GPR; Metamaterial lens; Resistive loading;
Conference_Titel :
Ground Penetrating Radar (GPR), 2014 15th International Conference on
Conference_Location :
Brussels
DOI :
10.1109/ICGPR.2014.6970525
