Ultra Wide Bandwidth High Gain Vivaldi Antenna for Wireless Communications

Elsheakh, Dalia M.; Eltresy, Nermeen A.; Abdallah, Esmat A.

doi:10.2528/pierl17060507

Cited by 22 publications

(17 citation statements)

References 13 publications

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“…Thus, in order to enhance the efficiency, a compact shape of Vivaldi is designed. 6 The compactness in the shape of antenna is achieved using two Vivaldi surface shapes with same feeding network. FMCWs are also used for GPR and for through-the-wall applications.…”

Section: Antenna Simulation and Measured Resultsmentioning

confidence: 99%

“…As the signal of the GPR is required to propagate through inhomogeneous media, the efficiency of the antenna should be taken into account. Thus, in order to enhance the efficiency, a compact shape of Vivaldi is designed . The compactness in the shape of antenna is achieved using two Vivaldi surface shapes with same feeding network.…”

Section: Gpr Radar Systemmentioning

confidence: 99%

“…Ultra‐wideband (UWB) antenna is one of the preferred antennas for some applications in the microwave imaging, object measurement technology, and noninvasive testing (NIT) . In this era, the microstrip antenna has the advantages of small size, high gain, and low cost for good performance in some applications . Ground‐penetrating radar (GPR) has been utilized by emitting an electromagnetic wave directed into the ground and the buried objects cause reflections of the emitted wave that are then detected by the receiver system.…”

Section: Introductionmentioning

confidence: 99%

“…[1][2][3][4][5] In this era, the microstrip antenna has the advantages of small size, high gain, and low cost for good performance in some applications. [6][7][8][9][10] Ground-penetrating radar (GPR) has been utilized by emitting an electromagnetic wave directed into the ground and the buried objects cause reflections of the emitted wave that are then detected by the receiver system. This is shown in the electrical properties as the signal reflection coefficient and their related phase.…”

Section: Introductionmentioning

confidence: 99%

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Compact ultra‐wideband Vivaldi antenna for ground‐penetrating radar detection applications

Elsheakh

Abdallah

2019

Micro & Optical Tech Letters

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This article presents a study an ultra‐wide bandwidth (UWB) antenna for ground‐penetrating radar (GPR) applications. The GPR is a favorable technology for detection and identification of buried object as landmine or mummy. Vivaldi antennas are studied in terms of operating frequency range and phase to detect an object buried in the sand layer from 1 up to 10 m. The designed Vivaldi antenna is printed on a thick economic FR4 substrate with concise dimensions 12 ×13 ×1 cm3 and operates in the frequency range that extended from 0.4 GHz up to 10 GHz. Experimental results verified good agreement with the simulated results. The proposed antenna has electrically large length with size reduction about 35% from the original antenna size. Vivaldi shape has large average gain about 17 dBi with above 80% average efficiency to differentiate between hidden object material and their shapes. Three‐dimensional electromagnetic simulator, namely High Frequency Structure Simulator (HFSS) version 14 is used to simulate the proposed antenna.

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Section: Antenna Simulation and Measured Resultsmentioning

confidence: 99%

Section: Gpr Radar Systemmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Compact ultra‐wideband Vivaldi antenna for ground‐penetrating radar detection applications

Elsheakh

Abdallah

2019

Micro & Optical Tech Letters

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“…The main object of this section is the detection of water. A compact novel shape of Vivaldi antenna as shown in Figure 1 with dimensions of 0.17λ × 0.16λ × 0.013λ is proposed in this section [6].…”

Section: Compact Ultra-wideband (Uwb) Vivaldi Antennamentioning

confidence: 99%

Detection of Underground Water by Using GPR

Elsheakh¹,

Abdallah²

2019

Groundwater - Resource Characterisation and Management Aspects

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Water is the human vital requirement for life; in these days, decreasing of the fresh water increases the importance of the aquifer water. However, Upper Egypt is higher than north Egypt, so the water map continually changes daily, and the aquifer water is deeper than 10 m. The ground penetrating radar (GPR) system is used for underground water detection. GPR is a promising technology to detect and identify aquifer water or nonmetallic mines. One of the most serious components for the performance of GPR is the antenna system. The technology of the remote sensing and radar is rapidly developing, and it has led to the ultra-wideband electronic systems. All of these factors, such as miniaturized, low cost, possible compromise solution between depth and resolution, scanning in real time, easy to interpret, and decreased the false alarm, are important in designing the ground penetrating system. The electrical properties of the sand and fresh water layers are investigated using laboratory measurement and EM simulation. Different types of antenna may be used in GPR to operate over a frequency range for different penetration depth. Frequency-modulated continuous wave is also used for GPR and for through-the-wall applications. However, most of these kinds of antennas are limited by their large volume for certain applications. Therefore, a compact Vivaldi antenna with EBG and a compact planar printed quasi-Yagi antenna with meandered ground plane are designed to fulfill all above requirement.

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