Design of Ultra Wide-Band Bowtie Antenna for GPR Applications
Keywords:
Bowtie Antenna, Ground Penetrating Radar (GPR), Ultra Wide-Band, Low-Profile Antenna, RT Duroid 5880Abstract
Ground Penetrating Radar (GPR) is one technology that utilizes a radar system to determine the location of objects that are below the surface of the ground. In its current development, GPR uses an Ultra Wide-Band (UWB) radar system that works at frequencies between 10 MHz to 10 GHz [1]. The use of UWB radar systems are to get high resolution values which affect the level of accuracy in detecting objects. In general, in the implementation of the UWB radar system for GPR technology, antenna types such as bow-tie antennas, TEM Horn antennas, tapered slot antennas, spiral antennas, and vivaldi antennas are used [2] . The characteristic of antenna needed in GPR system must have wide bandwidth to examine the resolution of image. In this report, a bowtie antenna is investigated GPR applications. The bowtie antenna is used because this type of antenna has a smaller size and lightweight. The bowtie antenna design was carried out using RT-Duroid 5880 dielectric substrate with dielectric constant (????????) at 2.2 and thickness (ℎ) at 1.57 mm to get the low profile antenna dimensions. The bowtie antenna is operated in the range from 1,6 to 2,6 GHz for a VSWR ≤2.
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