The new near-field approach for microwave tomography of absorbing media

2019 ◽  
Vol 126 (10) ◽  
pp. 105101 ◽  
Author(s):  
Vladimir P. Yakubov ◽  
Victor P. Belichenko ◽  
Sergey E. Shipilov ◽  
Aleksandr S. Mironchev ◽  
Andrey V. Klokov ◽  
...  
Keyword(s):  
Near Field ◽  
Microwave Tomography ◽  
Field Approach ◽  
Absorbing Media

Near-field microwave tomography of planar semiconductor microstructures

2017 ◽  
Vol 122 (24) ◽  
pp. 244505 ◽  
Author(s):  
A. N. Reznik ◽  
N. V. Vostokov ◽  
N. K. Vdovicheva ◽  
S. A. Korolyov ◽  
V. I. Shashkin
Keyword(s):  
Near Field ◽  
Microwave Tomography

Near-Field Uniform Beams for Pulsed Doppler Ultrasound

1980 ◽  
Vol 2 (4) ◽  
pp. 324-337 ◽  
Author(s):  
Chong-Cheng Fu ◽  
Sharbel E. Noujaim ◽  
Robert S. Jaffe ◽  
Levy Gerzberg ◽  
Roger D. Melen
Keyword(s):  
Flow Measurement ◽  
Pattern Analysis ◽  
Ultrasonic Transducer ◽  
Near Field ◽  
Ultrasonic Field ◽  
Beam Pattern ◽  
Field Approach ◽  
Pulsed Doppler Ultrasound ◽  
Pulsed Ultrasonic

A mathematical model for the beam pattern of a pulsed ultrasonic transducer is introduced. Beam-pattern analysis and simulation of a circular transducer based on this model agree well with the experimental results. It is demonstrated that, in its near field, the pulsed transducer is capable of generating a good approximation to a uniform ultrasonic field which cannot be achieved with a cw transducer. Preliminary error analysis indicates that the near-field beam pattern of the pulsed transducer is suitable for quantitative blood-flow measurement, and design criteria are developed for this application. A prototype has been fabricated and tested in in-vitro experiments, and the results verify the feasibility of the quantitative blood flowmeter principle and the pulsed-transducer near-field approach to the formation of uniform beams.

Near-field microwave tomography of biological objects

2004 ◽  
Vol 49 (4) ◽  
pp. 485-493 ◽  
Author(s):  
A. N. Reznik ◽  
N. V. Yurasova
Keyword(s):  
Near Field ◽  
Microwave Tomography ◽  
Biological Objects

Near-Field Resonance Microwave Tomography and Holography

2018 ◽  
Vol 60 (9) ◽  
pp. 733-749 ◽  
Author(s):  
K. P. Gaikovich ◽  
A. I. Smirnov ◽  
D. V. Yanin
Keyword(s):  
Near Field ◽  
Microwave Tomography ◽  
Resonance Microwave

A traditional Near Field-Far Field approach-based model and a spreadsheet workbook to manage Oxygen Deficiency Hazard

2021 ◽  
Vol 149 ◽  
pp. 537-556
Author(s):  
Elena Stefana ◽  
Filippo Marciano ◽  
Daniel Drolet ◽  
Thomas W. Armstrong
Keyword(s):  
Oxygen Deficiency ◽  
Near Field ◽  
Far Field ◽  
Field Approach
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