Design of an Antenna for GPR Application = Design of an Antenna for GPR Application

다국어 초록 (Multilingual Abstract)

Ground Penetrating Radar has been applied as a non-invasive geophysical technique in archeological and numerous structural engineering subsurface exploration (Jol, 2008; Daniels, 2004). Also the recent development in Ultra-Wide Band (UWB) in Ground Penetrating Radar (GPR) has opened new opportunities to provide more structural information and quantitative dielectric characteristics (Sagnard, 2014). Mathematically, the length of a dipole antenna has been proved to be equal to half of its lowest wavelength (Howlader and Sattar 2016). In other words, the highly dependence of the operating frequency of an antenna on its arm length has been hindering the fabrication of a portable antenna design. Hence, a study to juxtapose the relationship between the operating frequency of an antenna and its dimension is highly essential. Therefore, this study aimed to design a portable systematically dipole antenna with additional arms in other achieve a scale down antenna size at lower frequency bandwidth. Consequently, a parametric study using numerical method has been used to study the antenna response in air and in soil at varying arm length. An antenna dimension with a reduce reflection coefficient to enhancing its radiation characteristics is suggested. This result may be apply to determine the dimension of the GPR antenna.