Radiation Pattern Analysis of Single and Multi-Antenna Wearable Systems

Abdullah, Mohammad Waris; Fafoutis, Xenofon; Klemm, M.; Hilton, Geoff

doi:10.1109/vtcfall.2016.7881186

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…2D radiation patterns were then observed and analyzed with the use of the RMSE method to ensure simulated results were accurate to the expected results. Abdullah et al [15], emphasize the importance of H-plane and E-plane analysis to be able to study the omnidirectional and directional antennas in wearable systems. The study encompasses the human-body phantom assuming that the wearable device will be worn on the wrist, torso, or arms.…”

Section: Review Of Related Literaturementioning

confidence: 99%

Simulations on the effects of an optimized bowtie dipole antenna with an adaptive FIR filter

Africa

Tan

2023

Bulletin EEI

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In the evolution of technology through the years, antennas are use in varying wireless systems have been in demand. Antennas play a great role in transmitting and receiving signals. As its application is heavily used in many days to day activities, it is important to create a cost-efficient and quick way to analyze its performance, characteristics, and relationship to different variables. As many radiation pattern acquisition devices are expensive, this simulation proposes a quick, reliable, and cost-friendly way to simulate 2D patterns in the E-plane and H-plane of a bowtie dipole antenna with an adaptive finite impulse response (FIR) filter. Through this study, the software MATLAB will be utilized to successfully simulate the radiation patterns of antennas with varying lengths. With the use of MATLAB toolboxes, the researchers aim to be able to compare different antenna lengths and determine the relationship and effect of it in the obtained 2D radiation pattern. If this method is successful various antenna applications may be implemented in the future with the use of 2D radiation pattern results.

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Section: Review Of Related Literaturementioning

confidence: 99%

Simulations on the effects of an optimized bowtie dipole antenna with an adaptive FIR filter

Africa

Tan

2023

Bulletin EEI

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“…The antenna's 3D polarimetric radiation patterns of the antenna were measured in an anechoic chamber on a solid radiation absorbing material (RAM) body phantom to measure its 3D directivity and total efficiency. The phantom's RAM composition enables the emulation of body-shadowing and inbody losses [40]. The antenna was measured on the phantom's body and arm.…”

Section: Radiation Properties Measurementsmentioning

confidence: 99%

Dual-Polarized Wearable Antenna/Rectenna for Full-Duplex and MIMO Simultaneous Wireless Information and Power Transfer (SWIPT)

Wagih¹,

Hilton²,

Weddell³

et al. 2021

Preprint

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<div>Owing to the mobility of a wearable antenna and the unpredictable body-centric communications environment, dual-polarization antennas are essential for both communications and energy harvesting. This paper presents a dual-polarized four-port textile antenna/rectenna for wearable simultaneous wireless information and power transfer (SWIPT) applications. The proposed antenna utilizes dual ports for both off-body communication and energy harvesting from horizontal and vertical polarizations. The antenna maintains a 100 MHz bandwidth with an S11 under -10 dB around 2.4 GHz in the presence and absence of the human body, and at least 10~dB small-signal and large-signal isolation between all ports. The antenna maintains a 70-88% measured total efficiency and 8.4--9.6 dBi gain for various on-phantom positions across both communication ports. The measured mutual coupling is under -10 dB between co-polarized rectenna/antenna ports, and under -16~dB between orthogonally-polarized ports. A high RF to DC peak power conversion efficiency of over 70% (+-5%) is achieved with a broadside harvesting pattern. Based on the proposed antenna's performance, SWIPT microstrip antennas can be adopted for both full-duplex and MIMO applications, significantly reducing the complexity of future battery-free networks for both wearable and non-wearable applications.</div>

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“…The input impedance characteristics of the proposed IFA (Band #5 and Band #6) A radiation pattern defines the variation of the power radiated by an antenna as a function of the direction away from the antenna[23]. The energy radiated by the antenna in a particular direction…”

mentioning

confidence: 99%

Examination of Multiband IFA for UHF and SHF Channel Applications

E¹,

Amalia²,

Siradjuddin³

et al. 2018

Preprint

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The Inverted F Antenna (IFA) with the parasitic element on a finite conducting plane is proposed in the range frequency of 0.1 to 5.5 GHz and its characteristics are analyzed numerically. In this research, the parasitic element and the main IFA are investigated to obtain the resonance frequency for multiband operation purposes. The parasitic element is placed beneath adjusted to the main IFA to derive more frequency bands. The distance between the parasitic element and main horizontal element extremely affects the performance of the IFA. It is found that when the parasitic element is located closer to the conducting plane, this element is coupled by the current on the conducting plane. Consequently, the return loss bandwidth becomes narrower. Therefore, the gain of the proposed IFA becomes a bit higher. The antenna gain is about 8.21 dB at band #3 (λ1.747), 7.43 dB at band #5 (λ2.967) and 8.82 dB at band #6 (λ4.023). This occurs when the calculation condition is antenna height h1 = 23 mm, h2 = 21 mm, horizontal antenna elements L = 173.2 mm, L1 = 140.9 mm and Lp = 152 mm, shorted element Ls = 30.7 mm, the distance between parasitic element and shorted element pyl = 5 mm. While the size of conducting plane is considered pxp+pxm by pyp+pym as 57.5+57.5 mm by 200+50 mm. In the numerical analysis, the electromagnetic simulator WIPL-D based on Method of Moment is used. The results show that the proposed IFA has UHF and SHF channel receiver which are suitable for advanced wireless service (band #3), mobile phones, Bluetooth, maritime service, radiolocation service (band #5) and radars, mobile phones, commercial wireless LAN (band #6).

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Radiation Pattern Analysis of Single and Multi-Antenna Wearable Systems

Cited by 5 publications

References 11 publications

Simulations on the effects of an optimized bowtie dipole antenna with an adaptive FIR filter

Simulations on the effects of an optimized bowtie dipole antenna with an adaptive FIR filter

Dual-Polarized Wearable Antenna/Rectenna for Full-Duplex and MIMO Simultaneous Wireless Information and Power Transfer (SWIPT)

Examination of Multiband IFA for UHF and SHF Channel Applications

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