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This paper presents a directional and wideband antenna for ground penetrating radar (GPR) applications. The antenna is designed by introducing slots on bowtie patch. The design is implemented on FR4 board with dielectric constant of 4.7 and thickness of 0.8 mm. As a result of having thinner substrate, the design is compact and light weight. The bowtie antenna performance is investigated across 0.5...
This paper discusses the permittivity measurement of different types of soil in Malaysia for Ground Penetrating Radar Application (GPR). Four different types of soil have been chosen as the samples which are wet sand, dry sand, wet clay and dry clay. The permittivity measurements of the samples are determined using Agilent Network Analyzer (E8362B) and Open ended coaxial probe method (Agilent Dielectric...
In this paper, the design of planar antenna for use in Ground Penetrating Radar (GPR) for buried object detection is presented. The proposed antenna offers wide operational bandwidth within 500 MHz to 2 GHz frequency band. This property makes the antenna suitable for the application of GPR for buried object detection. Taconic TLY-5 is used as the substrate with dielectric constant of 2.2, tangent...
The proposed Embroidery Wearable Snail Antenna (EWSA) is capable for dual-band operation which is 1.575 GHz for GPS application and 1.8 GHz for GSM application. The EWSA is basically designed in circle shape at the centre but then subtracted by square shape at the upper and bottom. In seeking good results, the optimization process is compulsory where the width of squares hold the key of dual band...
This paper investigates the performance of two Wilkinson power dividers over a wide band frequencies range from 1 to 13 GHz. The first power divider is designed and developed using single section method while the second power divider is designed using double section method. The main purpose of this study is to determine how much bandwidth improvement can be achieved using double section compared to...
In this paper, the design of wideband antenna with half and defected ground plane for buried object detection is presented. The antenna offers wide bandwidth from 0.5 GHz up to 3 GHz which is suitable for ground penetrating radar (GPR) system to detect buried objects under the ground surfaces. The simple structure and easy to integrate with planar substrate are the advantages of the antenna. A rectangular...
This paper presents the different thickness of rice husk microwave absorber effects microwave absorption performance. The sample microwave absorber was fabricated using rice husk material. The complex permittivity will be measured using an Agilent dielectric probe. The reflection loss and absorption performance of rice husk microwave absorbers will be investigated. The rectangular waveguide simulation...
In this article, the design of log periodic fractal Koch antenna using the second iteration has been developed for ultra high frequency band applications. The ability to reduce the size as maintaining the performances of the antenna such as input return loss and radiation patterns brings fractal Koch and becomes enticing among researchers. The design of the log periodic fractal Koch antenna has been...
The design of Log Periodic Fractal Koch Antennas (LPFKA) for Ultra High Frequency (UHF) band applications for three different iterations is discussed in this paper. A size reduction is achieved by using Fractal Koch technique. In this works, 0th, 1st and series iteration have been applied to the antennas and the performances of the antennas have been discussed. The antennas have been designed and...
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