Transponder Antennas in and Near a Three-Layered Body

King, Ronold W. P.; Prasad, Shashikant; Sandler, B.

doi:10.1109/tmtt.1980.1130124

Cited by 13 publications

(8 citation statements)

References 33 publications

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“…1. This model has previously been employed by R. W. P. King in an early treatment of embedded antennas [13] but originates from [14]. The frequency-dependent electrical conductivity, , and the real part of the relative permittivity, , of each layer are provided in [14], and are summarized in Table I.…”

Section: Multilayer Human Body Modelmentioning

confidence: 99%

Propagation Between On-Body Antennas

Lea

Hui

Ollikainen

et al. 2009

IEEE Trans. Antennas Propagat.

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The theory of propagating waves near a surface is reviewed with an eye to gain insight into the mechanisms involved, and to provide analytical-based models, for power-efficient on-body propagation. The Zenneck wave, and in particular the Norton wave, are appraised as candidate mechanisms for the propagation. For flush-mounted ("band aid") antennas, desired for on-body sensors, the Norton wave is the only direct propagation mechanism between the sensors. The Norton wave fits very well to simulation results presented here, and comparisons are also made with available published physical experiments, although these measurements typically feature the optical paths of elevated, or non-flush, antennas.

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Section: Multilayer Human Body Modelmentioning

confidence: 99%

Propagation Between On-Body Antennas

Lea

Hui

Ollikainen

et al. 2009

IEEE Trans. Antennas Propagat.

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“…It is also shown that for a 150 MHz frequency, the body goes from director to reflector system for a height of 1 m or λ / 2. In 1980 published a study on the impedance of a dipole in and above the body [10]. King reuses a theory developed in the case of antennas very close to the soil in order to apply to the body and in particular to the case of a dipole to 3 GHz [7].…”

Section: Body-antenna Interactionmentioning

confidence: 99%

Study of the effects of human tissue on performance of a loop antenna

Tayari¹,

Werfelli²,

Chaoui³

et al. 2016

IOSR

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“…The fields on this observation plane as a criterion plane were evaluated for the investigation of propagation characteristics in BANs [14][15][16]. On this common plane, the specifically propagating waves (CWs, CLWs, and CGWs) created only in cylinder structure can be extracted by the subtraction of scattering waves calculated with cylinder and slab.…”

Section: Waves In Structures Of Circular Cylinder and Planar Slabmentioning

confidence: 99%

“…The relation of the variations of this coordinate system and rectangular coordinate system is as follows: x = x, γ = y 2 + z 2 , and ψ = tan −1 (y/z). When a VED with current moment Il is located at (x , γ , ψ ) in region 1, scattering electric field formulations at observation point (x, γ, ψ) in regions 1, 2, and 3 are derived as written in (11), (12), (13), (14), and (15), (16), respectively. The y and z components of the fields are acquired from multiplying the γ components in (12), (14), and (16) by sin(ψ − ψ ) and cos(ψ − ψ ), respectively.…”

Section: Planar-slab Structurementioning

confidence: 99%

“…The analysis with three-layered half-space geometry substituted for the half-space of the human body was examined [14], and the propagation on the model, especially about surface wave modes, was investigated [15]. In order to approach the finite body, circular-cylinder geometry similar to sectional parts of the human body, such as arms, legs, and torso, was employed and the propagation characteristics including scattering waves were evaluated in relation to the transverse section of the human body [16].…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Quantitative Estimation of Scattering Waves in Cylinder-Body Model for Body Area Networks: Comparison of Analyses With Unifrom Cylinder- And Slab-Body Models

Seo¹,

Saito²,

Takahashi³

et al. 2010

PIER B

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Abstract-This paper estimates separately the components of scattering waves generated in cylinder-body model for body area networks.For the evaluation, scattering field formulations in relation to uniform cylinder-and slab-body models are provided, and the reliability of the analyses is testified by the comparison with results computed by the finite-difference time-domain (FDTD) method. Creeping waves, cylinder leaky waves, and cylinder guided waves, which are created only in cylindrical structure, are extracted quantitatively by contrasting the scattering waves that are calculated with the two body models. In addition to the extracted waves, other components of scattering waves such as reflected waves, transmitted waves, surface waves, leaky waves, and guided waves also are examined. From evaluations with various operating frequencies and thicknesses of the body model, it is confirmed that reflected waves have the most influence on electrical characteristics of a source. Moreover creeping waves and cylinder leaky waves are generally dominant at the opposite side of the cylinder when a source is located near cylinder surface. Furthermore, the existence of creeping waves with low attenuation in the vicinity of cylinder surface is demonstrated by electric field intensities calculated by varying the observation point along cylinder axis.

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Transponder Antennas in and Near a Three-Layered Body

Cited by 13 publications

References 33 publications

Propagation Between On-Body Antennas

Propagation Between On-Body Antennas

Study of the effects of human tissue on performance of a loop antenna

Quantitative Estimation of Scattering Waves in Cylinder-Body Model for Body Area Networks: Comparison of Analyses With Unifrom Cylinder- And Slab-Body Models

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