Design of CPW fed bow-tie slot antenna for ground penetrating radar application
01 May 2016-pp 1820-1823
TL;DR: The practicability of building a ultra-wide band bow-tie slot antenna for GPR system is explored and Aluminum back cavity is considered to achieve unidirectional radiation pattern and enhance the gain of antenna.
Abstract: This paper presents the antenna for ground penetrating radar (GPR) for soil characteristics measurement application. The objective is operating frequency having range from 250–1250 MHz whilst restricting antenna lobs radiate to ground direction. The demand of ground penetrating radar design is antenna with ultra wide bandwidths (UWB). Designing optimum gain consideration of 5dBi thus the conventional antennas such as dipoles cannot be used effectively throughout the frequency band. The main objective of this proposed antenna is to use it for agriculture soil characteristics extraction. This paper proposes the practicability of building a ultra-wide band bow-tie slot antenna for GPR system is explored. Aluminum back cavity is considered to achieve unidirectional radiation pattern and enhance the gain of antenna. Considering best simulation results antenna is configured and implemented.
Citations
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19 Apr 2018
TL;DR: In this article, a coplanar waveguide fed antenna with compact size is proposed for ultra-wideband applications, which consists of a U-shaped stub with small rectangular slots embedded all over the stub.
Abstract: A coplanar waveguide fed antenna with compact size is proposed for ultra-wideband applications. The size of the proposed antenna is 27×21×1.6 mm3 (L×W×h) and it consists of a U-shaped stub with small rectangular slots embedded all over the stub. Radiation pattern and return loss exhibited by the antenna is good. The measured impedance bandwidth provided is 7.9 GHz (3.6-11.5 GHz) with two resonant frequencies of 7. 33 GHz and 9.05 GHz. The antenna is printed on the low-cost FR4 substrate with a dielectric constant of 4.4 and thickness of 1.6mm. The antenna provides a maximum gain of 6.64 dB and bandwidth from 2.8GHz to 11.6GHz. The analysis is done by varying every dimension of the antenna using the CST Microwave Studio.
4 citations
Cites background from "Design of CPW fed bow-tie slot ante..."
...But some of them still offer large size [16-18]....
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01 Mar 2020
TL;DR: In this article, a printed wide slot antenna fed by double-shaped feeding strip is presented. But the proposed antenna has dimensions of 230 mm × 270 mm, which yields a very wide impedance bandwidth.
Abstract: This paper presents a printed wide slot antenna fed by double-shaped feeding strip. The proposed antenna consists of arc-shape slot, double feeding strip and arc-shape stub with rectangular slot. The simulated results reveal that the impedance matching of proposed antenna is mainly affected by the double feeding strip and rectangular slot etched on the arc-shape stub. The proposed antenna has dimensions of 230 mm × 270 mm, which yields a very wide impedance bandwidth. It can cover the frequency range between 0.34 to 3. 548 GHz. Moreover, a stable and bi-directional radiation pattern is observed within the frequency lower than 960 GHz for subsurface imaging application. The proposed antenna achieves maximum gain about 7.26 dBi at the frequency of 2 GHz.
3 citations
Cites background from "Design of CPW fed bow-tie slot ante..."
...the bandwidth of printed wide slot antenna such as increasing the coupling between the wide slot and microstrip feed line by using double or trident-shaped feed [3]-[4], using parasitic element [5], using similar or different shapes of antenna stub and slot [6]-[7]....
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Proceedings Article•
01 Oct 2018TL;DR: In this article, a printed slot antenna fed by microstrip line with double feeding strip, double-blended shape stub and stripline-loaded structure is presented, which achieves a very wide impedance bandwidth from 0.288 GHz to over 3 GHz which covers the frequency range for GPR application.
Abstract: This paper presents a printed slot antenna fed by microstrip line with double feeding strip, double-blended shape stub and stripline-loaded structure. Moreover, the reflector is added behind the proposed antenna in order to improve the directivity. The dimensions of the proposed antenna are 28 mm × 32 mm × 188.32 mm. The simulation results show that the proposed antenna achieves a very wide impedance bandwidth from 0.288 GHz to over 3 GHz which covers the frequency range for GPR application. The proposed antenna has an average gain about 6 dBi and the maximum gain of 8.85 dBi at 1.9 GHz, respectively. Compared to the existing GPR antennas, the proposed antenna has the small size, wide impedance bandwidth, good impedance matching and good radiation performance.
1 citations
01 Oct 2017
TL;DR: In this article, a novel bow-tie slot antenna with wideband performance is presented, which is fed by the aperture coupling of microstrip line and four metallic posts are inserted to improve the bandwidth.
Abstract: In this paper, a novel bow-tie slot antenna with wideband performance is presented. The antenna is fed by the aperture coupling of microstrip line. Four metallic posts are inserted to improve the bandwidth. By modifying the shape of the bow-tie slot and the microstrip line, a broad impedance bandwidth from 1.18 GHz to 3.22 GHz (S11<-10dB) is achieved, with a fractional bandwidth (FBW) of about 92.7%. In addition, an aluminum reflector is employed to achieve unidirectional radiation pattern and enhance the gain of antenna. The simulated results show that the proposed antenna reaches a maximum realized gain of 9.56dBi and the cross-polarization level is lower than −30 dB all over the frequency band.
Cites methods from "Design of CPW fed bow-tie slot ante..."
...An ultra-wide band CPW-fed bow-tie slot antenna for GPR system was explored in [5]....
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References
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01 Jul 1984
5,335 citations
01 Jan 2018
TL;DR: Ground penetrating radar (GPR) is a tool for indirectly looking at underground objects (such as graves, gravel and sand layers, and other underground structures) using radio waves, which have a longer wavelength than x-rays.
Abstract: Ground penetrating radar (GPR) is a tool for indirectly looking at underground objects (such as graves), gravel and sand layers, and other underground structures. The information or data received by GPR is like an x-ray or map of the underground. In fact, GPR uses electromagnetic (EM) waves, as xray machines do, but GPR uses radio waves, which have a longer wavelength (see Figure A1). The wavelength, or the length of one wave, is the fundamental difference between the forms of electromagnetic energy. For example, the wavelength of x-rays range from about 10 billionths of a meter to about 10 trillionths of a meter, whereas radio waves can be a few meters long.
428 citations
Additional excerpts
...David J. Daniels (2004)....
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07 Aug 2002
TL;DR: In this article, a new design for a coplanar waveguide (CPW) fed, aperture antenna is introduced, which is designed at a central frequency around 10 GHz with an input impedance of approximately 50 /spl Omega.
Abstract: In this paper, a new design for a coplanar waveguide (CPW) fed, aperture antenna is introduced. This CPW aperture antenna is designed at a central frequency around 10 GHz with an input impedance of approximately 50 /spl Omega/. Numerical simulation is performed for antenna analysis using Momentum from the Advanced Design System (ADS) software package of Agilent Technologies. The bandwidth of this basic bow-tie aperture antenna is about 1 GHz and the return loss approximately -18 dB. Another advanced design for this basic bow-tie aperture antenna shows a bandwidth of 1.3 GHz with a return loss of -40 dB around 10 GHz. Simulation results for return loss, input impedance and radiation pattern are presented. These characteristics make these two antennas suitable for antenna arrays for radar applications.
40 citations
TL;DR: In this paper, a coplanar waveguide-fed bowtie slot antenna operating in a wide frequency band [0.4, 1.5] GHz has been designed for the non-destructive sounding of the sub-surface for a large range of applications, a shape and the dimensions of the antenna have been optimized in the presence of a soil using numerical simulations based on the finite difference time domain approach.
Abstract: For the non-destructive sounding of the sub-surface for a large range of applications, a coplanar waveguide-fed bowtie slot antenna operating in a wide frequency band [0.4;1.5] GHz has been designed. The main originality of our work is the extension of the operating frequency band of the uniplanar bowtie slot antenna to frequencies lower than 800 MHz. The shape and the dimensions of the antenna have been optimised in the presence of a soil using numerical simulations based on the finite difference time domain approach. For the characterisation of the sub-surface, a transmission link comprising a pair of bowtie slot antennas that are moved along the soil surface has been studied in details to obtain the system performance in the frequency and time domains. First experimental results have been obtained on a sandy soil in the frequency domain using a vector network analyser. The experimental data have been analysed and compared with simulations results.
23 citations
21 Jun 2010
TL;DR: In this paper, the authors presented a novel antenna for ground penetrating radar (GPR) applications, which consists of two crossed bowtie antennas loaded with an annular ring and demonstrated that the proposed antenna exhibits both a broadband impedance bandwidth and very good radiation properties.
Abstract: This paper presents a novel antenna for Ground Penetrating Radar (GPR) applications. It consists of two crossed bowtie antennas loaded with an annular ring. Numerical and experimental results are reported demonstrating that the proposed antenna exhibits both a broadband impedance bandwidth and very good radiation properties.
17 citations