A New Stacked Two-Dimensional Spectral Iterative Technique (SIT) for Analyzing Microwave Power Deposition in Biological Media

Linearized thin-wing theory is applied to the problem of the flow of an inviscid, incompressible fluid past a pair of two-dimensional sails (flexible airfoils of zero thickness) which interact with one another. Attention is confined to the case where the flow is smoothly attached at the leading edge of each of the two sails. The results in general confirm expectations regarding sail behaviour obtained by intuitive reasoning, and should be of value to the theoretically minded sailor The analysis is complicated by the fact that the shapes of the sails depend on the load distribution and vice versa; it leads to a pair of coupled integro-differential equations, which cannot be solved by conventional techniques. Each sail is represented by its properties at a series of N points along its chord, thereby converting the two ‘critical equations’ to matrix form. The result is an eigenvalue problem involving 2 N equations, 2 N unknowns, and two eigenvalues. This is solved by the use of an iterative technique, successive approximations being obtained alternately from each of the two matrix equations.

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Thermal resistance matrix representation of thermal effects and thermal design of microwave power HBTs with two-dimensional array layout

Chinese Physics B ◽

10.1088/1674-1056/ab3436 ◽

2019 ◽

Vol 28 (9) ◽

pp. 098502

Author(s):

Rui Chen ◽

Dong-Yue Jin ◽

Wan-Rong Zhang ◽

Li-Fan Wang ◽

Bin Guo ◽

...

Keyword(s):

Thermal Resistance ◽

Microwave Power ◽

Thermal Effects ◽

Matrix Representation ◽

Thermal Design ◽

Two Dimensional ◽

Dimensional Array ◽

Resistance Matrix

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Traveling-Wave Fed Two-Dimensional Phased-Array Antenna for Microwave-Power Transfer

2019 IEEE Wireless Power Transfer Conference (WPTC) ◽

10.1109/wptc45513.2019.9055604 ◽

2019 ◽

Author(s):

Naoki Hasegawa ◽

Yuki Takagi ◽

Yoshichika Ohta

Keyword(s):

Microwave Power ◽

Traveling Wave ◽

Phased Array ◽

Array Antenna ◽

Two Dimensional ◽

Power Transfer ◽

Phased Array Antenna

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Influence of microwave photo-excitation on the transport properties of the high mobility GaAs/AlGaAs 2D electron system

MRS Advances ◽

10.1557/adv.2020.30 ◽

2019 ◽

Vol 4 (61-62) ◽

pp. 3347-3352

Author(s):

T. R. Nanayakkara ◽

R. L. Samaraweera ◽

A. Kriisa ◽

U. Kushan Wijewardena ◽

S. Withanage ◽

...

Keyword(s):

Electron Temperature ◽

Microwave Power ◽

High Mobility ◽

Electron System ◽

Zero Field ◽

Two Dimensional ◽

Dimensional Electron ◽

Field Limit ◽

Theoretical Predictions ◽

Dimensional Electron System

ABSTRACTWe examined the influence of the microwave power on the diagonal resistance in the GaAs/AlGaAs two dimensional electron system (2DES), in order to extract the electron temperature and determine microwave induced heating as a function of the microwave power. The study shows that microwaves produce a small discernable increase in the electron temperature both at null magnetic field and at finite magnetic fields in the GaAs/AlGaAs 2DES. The heating effect at null field appears greater in comparison to the examined finite field interval, although the increase in the electron temperature in the zero-field limit appears smaller than theoretical predictions.

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Microwave Induced Temperature Rises in Rabbit Eyes in Cataract Research

Journal of Heat Transfer ◽

10.1115/1.3450259 ◽

1975 ◽

Vol 97 (1) ◽

pp. 123-128 ◽

Cited By ~ 77

Author(s):

A. F. Emery ◽

P. Kramar ◽

A. W. Guy ◽

J. C. Lin

Keyword(s):

Microwave Power ◽

Temperature Fields ◽

Threshold Temperature ◽

Transient Temperature ◽

Temperature Level ◽

Power Deposition ◽

Deposition Patterns ◽

Temperature Distributions ◽

Near Zone ◽

Good Agreement

Microwave power deposition patterns and temperature distributions were measured for rabbit eyes exposed to localized near zone 2450 MHz radiation and good agreement was obtained between the measured and predicted transient temperature fields. The lenses were biomicroscopically examined to determine the minimum exposure times necessary to produce posterior lens opacity (cataracts) and these times are correlated with the temperature calculations to suggest that a threshold temperature level exists.

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