A Novel Compact Tapered-Slot Antenna for GPR Applications

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 anten...

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Bibliographic Details
Published in:IEEE antennas and wireless propagation letters 2013, Vol.12, p.972-975
Main Authors: Shao, Jinjin, Fang, Guangyou, Ji, YiCai, Tan, Kai, Yin, Hejun
Format: Article
Language:English
Subjects:
Antenna measurements
Coplanar waveguide
Coplanar waveguides
Ground penetrating radar
Loaded antennas
loading
Slot antennas
Slot lines
ultrawideband antenna
VSWR
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Summary: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.
ISSN:1536-1225
1548-5757
DOI:10.1109/LAWP.2013.2276403