Abstract
A novel wideband VHF antenna for the impulse ground penetrating radar (GPR) system at 200 MHz central frequency is presented in this article. The antenna improves the impulse GPR system for increasing ability penetration. By using the Lemniscate curve, this novel structure of the proposed antenna achieve better radiation than other bow-tie antennas. In addition, this article also proposes the UWB balanced-to-balanced (balun) transformation line is designed to feed the antenna. The balun is an important element for improving the bandwidth of the antenna. The fabrication of the antenna is only simple but also low cost with FR4 substrate and copper patch. The proposed antenna is designed and fabricated with the successful results.
Highlights
Ground penetrating radar (GPR) is sometimes called georadar, ground probing radar, or subsurface radar
Quantitative interpretation through modeling can derive from ground penetrating radar data such information as depth, orientation, size and shape of buried objects, density and water content of soils, and much more
Chen Guo and Richard C.Liu provided Shielded antenna system [6]. They make a good Transmitting signal with shielding and absorbing materials, their designed antenna is used in a ground penetrating radar (GPR) system working at 400MHz central frequency
Summary
Ground penetrating radar (GPR) is sometimes called georadar, ground probing radar, or subsurface radar. Antennas radiate electromagnetic energy in the microwave band (UHF/VHF frequencies) when there is a change in the acceleration of the current on the antenna. The depth range of GPR system depends on the electrical conductivity of the ground and the transmitted central frequency. The UHF central frequencies of this antenna don’t improve the range of depth for the impulse GPR system. Chen Guo and Richard C.Liu provided Shielded antenna system [6] They make a good Transmitting signal with shielding and absorbing materials, their designed antenna is used in a GPR system working at 400MHz central frequency. We propose a novel wideband VHF antenna to improve the deep penetration for the impulse GPR system.
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