Engineering Electromagnetics

Ida, Nathan

doi:10.1007/978-0-387-68624-0

Cited by 44 publications

(25 citation statements)

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“…The receiving plate was a 10-cm 2 blank PCB. Measurements confirmed that the received voltage is proportional to the distance between both plates, since the latter behave as a parallel plate capacitor [10]. Measurements in the phantom material confirmed that the receiver would be required to amplify signals with an amplitude of not less than 40 mV.…”

Section: Microcontrollersupporting

confidence: 50%

Design of a Miniaturized Wireless Blood Pressure Sensing Interface Using Capacitive Coupling

Aldaoud

Laurenson

Rivet

et al. 2015

IEEE/ASME Trans. Mechatron.

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Abstract-This paper presents the implementation of a miniaturized wireless blood pressure sensor interface. The system uses capacitive coupling in order to transmit the data, as well as wireless inductive powering. Designed for a bit length of 6.4 μs, the average power consumption of the device has been measured to be 20.5 μW and 2.85 mW in air and phantom material, respectively. The miniaturized sensor interface circuit consists of two plates with a diameter of 2.5 cm, which are connected by means of a thin wire; the device's maximum thickness is 5 mm.Index Terms-Capacitive coupling, inductive powering, wireless implantable sensor interface.

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Section: Microcontrollersupporting

confidence: 50%

Design of a Miniaturized Wireless Blood Pressure Sensing Interface Using Capacitive Coupling

Aldaoud

Laurenson

Rivet

et al. 2015

IEEE/ASME Trans. Mechatron.

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“…(A) Incidence of an Electromagnetic wave on an Absorbing Material: Perhaps the simplest electrodynamic problem that is relevant to microwave processing is the normal incidence of a plane electromagnetic wave on a slab of material. [37][38][39] Let a plane electromagnetic wave be incident normally from vacuum on a slab of material of thickness a (Fig. 2).…”

Section: Modeling Of Electromagnetic Aspects Of Microwave Sinteringmentioning

confidence: 99%

“…An in-depth description of the numerical methods is beyond the scope of this study; a brief account of them can be found in Refs. 38,55. The numerical methods have been developed and refined for many microwave heating applications by Metaxas et al [56][57][58][59] From an electrodynamic viewpoint, simulations of the electromagnetic field for the configurations utilized for high-temperature microwave processing, and in particular sintering, have much in common with the low-temperature applications.…”

Section: Modeling Of Electromagnetic Aspects Of Microwave Sinteringmentioning

confidence: 99%

Microwave Sintering: Fundamentals and Modeling

2013

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This paper reviews the basic physical notions underlying microwave sintering and the theoretical and numerical models of the microwave sintering process. The propagation and absorption of electromagnetic waves in materials, and the distribution of electromagnetic field in cavity resonators that serve as applicators for microwave processing are discussed and the electromagnetic modeling of such applicators is reviewed. The microwave absorption properties of ceramic and metal powder materials and the methods of their description are addressed. Self‐consistent electromagnetic and thermal models that are capable of predicting the temperature distribution in the microwave‐heated materials and dynamic effects such as thermal runaway instabilities are reviewed. The multiphysics simulations that combine electromagnetic, thermal, and sintering models and result in predicting densification, shrinkage, and grain structure evolution are discussed in detail. The significance of microwave nonthermal effects in sintering is demonstrated based on the experimental results, and the models of such effects are reviewed.

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“…It is often assumed in engineering models that a dielectric material is homogeneous, isotropic, linear, and nondispersive (Ida 2004); however, these assumptions are not always valid for biological materials. In fact, food products are seldom entirely homogeneous, and often consist of a number of different ingredients, all with different dielectric properties.…”

Section: Introductionmentioning

confidence: 99%

Effect of Temperature (−5 to 130 °C) and Fiber Direction on the Dielectric Properties of Beef Semitendinosus at Radio Frequency and Microwave Frequencies

Basaran-Akgul

Basaran

Rasco

2008

Journal of Food Science

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The dielectric properties must be defined to design efficient radio frequency (RF) and microwave (MW) processes by the food manufacturers. The objective of this study was to understand how frequency, temperature, and muscle fiber orientation influence the dielectric properties. The eye of round (Semitendinosus) muscle was selected because it contains large, relatively uniform muscle cells with similar muscle fiber orientation and relatively uniform chemical composition throughout the tissue. Dielectric properties were measured using an open-ended coaxial probe technique at 27, 915, and 1800 MHz and temperatures between -5 and 130 degrees C. Power penetration depth was calculated. Since many commercially prepared, thermally processed, ready-to-eat entrees are made with frozen meat, dielectric property measurements were started from -5 degrees C. The dielectric constant and dielectric loss factors were often higher for muscle with the muscle fiber measured in a parallel orientation to the probe compared to samples of the same treatment (for example, fresh or frozen) in a perpendicular tissue orientation at the same frequency and temperature. Dielectric constant and loss values for frozen beef tended to be higher than fresh beef at the same temperature and frequency. Tissue orientation appeared to have a greater effect on dielectric loss values at lower frequencies. Penetration depth tended to be greater when the direction of propagation was perpendicular to the muscle fiber.

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Engineering Electromagnetics

Cited by 44 publications

References 0 publications

Design of a Miniaturized Wireless Blood Pressure Sensing Interface Using Capacitive Coupling

Design of a Miniaturized Wireless Blood Pressure Sensing Interface Using Capacitive Coupling

Microwave Sintering: Fundamentals and Modeling

Effect of Temperature (−5 to 130 °C) and Fiber Direction on the Dielectric Properties of Beef Semitendinosus at Radio Frequency and Microwave Frequencies

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