Efficient MoM Simulation of 3-D Antennas in the Vicinity of the Ground

Alkhalifeh, Khaldoun; Hislop, Greg; Özdemir, Nülifer; Craeye, Christophe

doi:10.1109/tap.2016.2618482

Cited by 17 publications

(5 citation statements)

References 34 publications

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“…The Volumetric Water Content (VWC) parameter is the main factor affecting the response of an antenna. Thus, it broadens the bandwidth and modifies the radiation pattern by increasing the directivity and gain [47][48][49].…”

Section: Ground Effect On Rf Energy Harvesting Processmentioning

confidence: 99%

“…In [47,48], the presence of the ground (VWC) allows a bandwidth broadening from 8 GHz to a band of 10.5 GHz. In [49], the presence of the ground provides an advantage to the antenna by expanding the bandwidth from 3 GHz to 3.8 GHz. In our case, the energy harvesting process will not be affected by the presence of the ground because even if the bandwidth of the antenna is widened, the rectifiers remain suitable for the GSM-1800, UMTS, and LTE bands.…”

Section: Ground Effect On Rf Energy Harvesting Processmentioning

confidence: 99%

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A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding

Benkalfate

Ouslimani

Kasbari

et al. 2022

Sensors

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In this paper, a new RF Energy Harvesting (RF-EH) system for Wireless Sensor Network (WSN) feeding is proposed. It is based on two different monitored architectures using switch circuits controlled by the input powers. One architecture is more adapted to high input powers and the other to low input powers. The two different architectures and the system are designed and realized on Teflon glass substrate with a relative permittivity of 2.1 and thickness of 0.67 mm. They are tested separately as a function of the distance from the relay antenna. A new multiband antenna with a size of 40 × 30 mm2 is used for both architectures and the system. The measured antenna gains are 2.7 dB, 2.9 dB, and 2.55 dB for the frequencies of 1.8 GHz, 2.1 GHz, and 2.66 GHz corresponding to the mobile communication networks, respectively. The rectifier consists of two Schottky diodes forming a full-wave rectifier and voltage doubler. The maximum measured RF-to-DC conversion efficiency is 71.5%. The proposed RF-EH system provides a maximum DC output voltage of 5.6 V and 3.15 V for an open and 2 kΩ resistance load, respectively.

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Section: Ground Effect On Rf Energy Harvesting Processmentioning

confidence: 99%

Section: Ground Effect On Rf Energy Harvesting Processmentioning

confidence: 99%

A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding

Benkalfate

Ouslimani

Kasbari

et al. 2022

Sensors

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show abstract

“…That explains why FDTD is so popular for EM analysis of a human model. On the other hand, other numerical methods such as the method of moment (MoM) [35] and the finite element method (FEM) [36] rely on unstructured meshes and thus it is not straightforward to apply these methods to analyze EM wave interaction with a human model. There is limited literature on unstructured meshes of a human model for EM analysis [37], [38].…”

Section: Introductionmentioning

confidence: 99%

Finite-Difference Time-Domain Modeling for Electromagnetic Wave Analysis of Human Voxel Model at Millimeter-Wave Frequencies

Baek¹,

Kim²,

Jung³

2019

IEEE Access

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The finite-difference time-domain (FDTD) modeling of a human voxel model at millimeter-wave (mmWave) frequencies is presented. It is very important to develop the proper geometrical and electrical modeling of a human voxel model suitable for accurate electromagnetic (EM) analysis. Although there are many human phantom models available, their voxel resolution is too poor to use for the FDTD study of EM wave interaction with human tissues. In this paper, we develop a proper human voxel model suitable for mmWave FDTD analysis using the voxel resolution enhancement technique and the image smoothing technique. The former can improve the resolution of the human voxel model and the latter can alleviate staircasing boundaries of the human voxel model. Quadratic complex rational function is employed for the electrical modeling of human tissues in the frequency range of 6-100 GHz. Massage passing interface-based parallel processing is also applied to dramatically speed up FDTD calculations. Numerical examples are used to illustrate the validity of the mmWave FDTD simulator developed here for bio electromagnetics studies. INDEX TERMSFinite-difference time-domain (FDTD) method, electromagnetic wave, human tissue, dispersion model, parallel processing, bioelectromagnetics, Doppler radar. JAE-WOO BAEK received the B.S. degree in electronics and information engineering from Korea University, Sejong, South Korea, in 2015, and the M.S. degree in electrical engineering from Hanyang University, Seoul, South Korea, in 2017, where he is currently pursuing the Ph.D. degree in electrical and computer engineering. His current research interests include computational electromagnetics, bioelectromagnetics, and parallel programming.

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“…Requirement of GPR antenna includes light weight and compact size with broad impedance bandwidth, flat gain variation, high efficiency, and minimal dispersion. TEM horn, bow‐tie, vivaldi, valentine, rugby ball, log periodic, and slot type of antenna were well considered for GPR applications …”

Section: Introductionmentioning

confidence: 99%

A leaf‐shaped CPW‐fed UWB antenna for GPR applications

Kundu

Jana

2018

Micro & Optical Tech Letters

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A new co‐planar waveguide fed UWB antenna with transitions in feed line is proposed in this article. A good agreement is found in between simulated and measured results of the proposed design. The antenna provides a bandwidth improvement of more than 120% with min. group delay variation, high efficiency of 88%, and gain variation of 2–5 dBi. The antenna pattern is omnidirectional in H‐plane and monopole like in E‐plane. The proposed antenna is also tested in close proximity of soil to establish its ability for GPR applications.

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Efficient MoM Simulation of 3-D Antennas in the Vicinity of the Ground

Cited by 17 publications

References 34 publications

A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding

A New RF Energy Harvesting System Based on Two Architectures to Enhance the DC Output Voltage for WSN Feeding

Finite-Difference Time-Domain Modeling for Electromagnetic Wave Analysis of Human Voxel Model at Millimeter-Wave Frequencies

A leaf‐shaped CPW‐fed UWB antenna for GPR applications

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