Microstrip Antenna With Defected Ground Plane Structure as a Sensor for Landmines Detection

Zainud-Deen, S.H.; Badr, M.E.; El-Deen, Emad; Hassan, Emadeldeen; Sharshar, H.A.

doi:10.2528/pierb08010203

Cited by 46 publications

(33 citation statements)

References 14 publications

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“…A strong correlation was observed between the microwave nearfield reflection measurements and the state and degree of hydration (a chemical reaction and binding of water and cement molecules), water-to-cement ratio (w/c), sand-to-cement ratio (s/c), coarse aggregate-to-cement ratio (ca/c), and compressive strength of cementbased materials [1,3,8,9]. However, these measurements have some disadvantages for investigation of these materials.…”

Section: Introductionmentioning

confidence: 97%

Water-to-Cement Ratio Prediction Using Anns From Non-Destructive and Contactless Microwave Measurements

Hasar¹,

Akkaya²,

Aktan³

et al. 2009

PIER

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Abstract-In concrete industry, there is a need for water-to-cement ratio (w/c) estimation of cement-based materials since the w/c ratio of cement mixtures is typically given at the batch plant, and this ratio, sometimes, is deliberately changed to have a more workable cement mixture. To meet the requirements of accurate w/c ratio determination of cement-based materials, in this research paper, we propose an artificial neural network approach for w/c ratio estimation of these materials using free-space non-contact reflection and transmission measurements of mortar specimens with w/c ratios of 0.40, 0.45, 0.50, 0.55 and 0.60. We have tested the network and observed less than 5 percent difference between the estimated and known values of w/c = 0.50.

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Section: Introductionmentioning

confidence: 97%

Water-to-Cement Ratio Prediction Using Anns From Non-Destructive and Contactless Microwave Measurements

Hasar¹,

Akkaya²,

Aktan³

et al. 2009

PIER

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“…The challenges of the execution of UWB systems are the growth of a suitable antenna that has a wide impedance bandwidth and an omnidirectional radiation pattern over the entire frequency range [2][3][4]. Printed monopole antennas are the most frequently used antennas for UWB applications because they are more popular due to their easier integration with monolithic microwave integrated circuits (MMICs), small size and low profile [5,6]. To avoid interference with other existing narrowband applications that inhabits part of the spectrum in the UWB band [7], such as World Wide Interoperability Microwave Access (WiMAX) in the 3.…”

Section: Introductionmentioning

confidence: 99%

Compact Tri-Band Notched Characteristics UWB Antenna for WiMAX, WLAN and X-Band Applications

Hamad

Mahmoud

2017

AEM

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Compact microstrip-fed printed monopole antenna with triple band-notched characteristics is suggested for ultra wideband (UWB) applications. The antenna is constructed of a conventional rectangular microstrip patch antenna with partial ground plane and T-shaped strip employed in the ground plane as well as an inverted Ω-and L-shaped slots incorporated within the radiated element. The notched functions are created by the inverted Ω-and L-shaped slots, which are realized for WiMAX (from 2.69 to 4.5 GHz) and WLAN (from 5.49 to 6.37 GHz). The T-shaped parasitic strip generates the third notch for the X-band uplink satellite communication (from 8.15 to 9.61 GHz). The measured operating -10 dB bandwidth of the proposed antenna extends from 2.39 to more than 18 GHz except at the notched bands. The prototype antenna has a total area of 20×20×1.6 mm 3 . The EM simulations are carried out using 3D fullwave FEM-based simulator; the Ansoft High Frequency Structure Simulator (HFSS). EM simulation results are in good agreement with measurement results. The radiation pattern of the proposed antenna is nearly Omni-directional over the whole band.

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“…Both references implemented EBG between two element arrays, these antenna designs are complex structure. The author found papers by Salehi et al [7] and by Zainud-Deen et al [8] which used dumbbell shape DGS for antenna array, however the results were simulation one and not realized through experimental results.…”

Section: Introductionmentioning

confidence: 99%

Radiation Properties Enhancement of Triangular Patch Microstrip Antenna Array Using Hexagonal Defected Ground Structure

Zulkifli¹,

Rahardjo²,

Hartanto

2008

PIER M

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Abstract-This paper presents a hexagonal shape defected ground structure (DGS) implemented on two element triangular patch microstrip antenna array. The radiation performance of the antenna is characterized by varying the geometry and dimension of the DGS and also by locating the DGS at specific position which were simulated. Simulation and measurement results have verified that the antenna with DGS had improved the antenna without DGS. Measurement results of the hexagonal DGS have axial ratio bandwidth enhancement of 10 MHz, return loss improvement of 35%, mutual coupling reduction of 3 dB and gain enhancement of 1 dB.

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Microstrip Antenna With Defected Ground Plane Structure as a Sensor for Landmines Detection

Cited by 46 publications

References 14 publications

Water-to-Cement Ratio Prediction Using Anns From Non-Destructive and Contactless Microwave Measurements

Water-to-Cement Ratio Prediction Using Anns From Non-Destructive and Contactless Microwave Measurements

Compact Tri-Band Notched Characteristics UWB Antenna for WiMAX, WLAN and X-Band Applications

Radiation Properties Enhancement of Triangular Patch Microstrip Antenna Array Using Hexagonal Defected Ground Structure

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