Title :
A Novel Compact Tapered-Slot Antenna for GPR Applications
Author :
Jinjin Shao ; Guangyou Fang ; Yicai Ji ; Kai Tan ; Hejun Yin
Author_Institution :
Key Lab. of Electromagn. Radiat. & Sensing Technol., Beijing, China
Abstract :
A novel compact planar tapered-slot antenna for ground penetrating radar (GPR) system is proposed. The antenna is fed by a coplanar waveguide (CPW) and evolved from one slotline of the compact CPW. Another slotline of the compact CPW forms a magnetic antenna as a supplement to the tapered-slot antenna. Some discontinuous points on the compact antenna structure will produce a relatively strong reflection, so the resistive loading is introduced. In order to validate the antenna performance, one prototype is fabricated and measured. The results demonstrate that the impedance bandwidth of the tapered slot antenna can span 0.64-6 GHz with the VSWR below 2, which agrees well with the simulated result. The radiation characteristics of the proposed antenna are measured, and its application for moving target tracking is also validated in a GPR system.
Keywords :
antenna radiation patterns; coplanar waveguides; ground penetrating radar; microwave antennas; radar antennas; slot antennas; GPR application; VSWR; compact CPW; compact planar tapered-slot antenna; compact tapered-slot antenna; coplanar waveguide; frequency 0.64 GHz to 6 GHz; ground penetrating radar system; impedance bandwidth; radiation characteristics; resistive loading; target tracking; Antenna measurements; Coplanar waveguides; Ground penetrating radar; Loaded antennas; Slot antennas; Slot lines; Coplanar waveguide; VSWR; loading; ultrawideband antenna;
Journal_Title :
Antennas and Wireless Propagation Letters, IEEE
DOI :
10.1109/LAWP.2013.2276403
