RF/Microwave Interaction with Biological Tissues

Vorst, A. Vander; Rosen, A.; Kotsuka, Youji

doi:10.1002/0471752053

Cited by 85 publications

(62 citation statements)

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“…The upper and lower limits of the values of electrical conductivity are listed in Table . The skin depth was estimated from the conductivity by a widely used approach, which uses the expression

normalδ = \sqrt{\frac{1}{π υ σ μ_{normalr} μ_{0}}} = 503 \cdot \sqrt{\frac{1}{σ [S / m] \cdot υ [normalHz]}} \cdot 1000 ([], mm)

, where σ is the conductivity, υ is the frequency of microwave field, μ 0 is the permeability of free space, and μ r ~ 1 is the relative permeability. Figure depicts values of conductivity and skin depth as a function of temperature.…”

Section: Resultsmentioning

confidence: 99%

Size effects in the conduction electron spin resonance of anthracite and higher anthraxolite

Tadyszak

Strzelczyk

Coy

et al. 2015

Magnetic Reson in Chemistry

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Electron paramagnetic resonance spectroscopy of conduction electrons, i.e. Conduction Electron Spin Resonance (CESR), is a powerful tool for studies of carbon samples. Conductive samples cause additional effects in CESR spectra that influence the shape and intensity of the signals. In cases where conduction electrons play a dominant role, whilst the influence of localized paramagnetic centres is small or negligible, the effects because of the spins on conduction electrons will dominate the spectra. It has been shown that for some ratios of the bulk sample sizes (d) to the skin depth (δ), which depend on the electrical conductivity, additional size effects become visible in the line asymmetry parameter A/|B|, which is the ratio of the maximum to the absolute, minimum value of the resonance signal. To study these effects the electrical direct current-conductivity and CESR measurements are carried out for two amorphous bulk coal samples of anthracite and a higher anthraxolite. The observed effects are described and discussed in terms of the Dyson theory. Copyright © 2015 John Wiley & Sons, Ltd.

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“…The upper and lower limits of the values of electrical conductivity are listed in Table . The skin depth was estimated from the conductivity by a widely used approach, which uses the expression

normalδ = \sqrt{\frac{1}{π υ σ μ_{normalr} μ_{0}}} = 503 \cdot \sqrt{\frac{1}{σ [S / m] \cdot υ [normalHz]}} \cdot 1000 ([], mm)

Section: Resultsmentioning

confidence: 99%

Size effects in the conduction electron spin resonance of anthracite and higher anthraxolite

Tadyszak

Strzelczyk

Coy

et al. 2015

Magnetic Reson in Chemistry

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“…The level of absorptivity of an absorber is measured quantitatively using reflection loss in decibels. The reflection loss of À20dB is adopted to be a standard for typical electromagnetic wave absorbers [17]. It means that 99% of the total energy of electromagnetic wave incident on it is absorbed.…”

Section: Introductionmentioning

confidence: 99%

A microwave absorber based on strontium ferrite–carbon black–nitrile rubber for S and X-band applications

Vinayasree

Soloman²,

Sunny³

et al. 2013

Composites Science and Technology

111

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“…Absorption of radiated power in human body is measured by specific absorption rate (SAR) [4]. Simulated average and local SAR plots for the case of placing the RFID-sensor on human forehead are presented in Fig.…”

Section: On-body Placement and Sar Resultsmentioning

confidence: 99%

Signal integrity and EMI evaluations of an RFID-Sensor tag for internet-of-things applications

Abdulhadi

Mandev

Abhari

2015

2015 IEEE Symposium on Electromagnetic Compatibility and Signal Integrity

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An RFID (radio frequency identification) -Sensor tag for internet of things applications is evaluated for various signal integrity and electromagnetic radiation measures in this paper. It is found that the placement of digital circuit with respect to the radiating element has to be optimized and the entire system layout, digital and RF parts has to be co-simulated to be able to capture the detuning of operating frequency. Port impedance plots are generated via full-wave simulations to show this impact. The coupling between ports is also inspected by monitoring transmission coefficient (S21). One possible application of this sensor device is for on-body temperature measurements; therefore, back radiation of the tag and specific absorption rate (SAR) plots are reported as well.

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RF/Microwave Interaction with Biological Tissues

Cited by 85 publications

References 0 publications

Size effects in the conduction electron spin resonance of anthracite and higher anthraxolite

Size effects in the conduction electron spin resonance of anthracite and higher anthraxolite

A microwave absorber based on strontium ferrite–carbon black–nitrile rubber for S and X-band applications

Signal integrity and EMI evaluations of an RFID-Sensor tag for internet-of-things applications

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