Effect of Signal Characteristics on Focusing Property of Time Reversal Electromagnetic Wave

2019 ◽  
Author(s):  
Peng Liao ◽  
Bin-Jie Hu ◽  
Zhi-Wu Lin ◽  
Qinglin Wen ◽  
Li-li Zheng
Keyword(s):  
Electromagnetic Wave ◽  
Time Reversal ◽  
Signal Characteristics ◽  
Focusing Property

scholarly journals Influential factors of time reversal Mirror on focusing property of time-reversed electromagnetic wave

2011 ◽  
Vol 60 (10) ◽  
pp. 104101
Author(s):  
Ding Shuai ◽  
Wang Bing-Zhong ◽  
Ge Guang-Ding ◽  
Wang Duo ◽  
Zhao De-Shuang
Keyword(s):  
Electromagnetic Wave ◽  
Time Reversal ◽  
Influential Factors ◽  
Focusing Property ◽  
Time Reversal Mirror

An Enhanced Time-Reversal Method for Impact Damage Monitoring on Plate-Like Structures

2012 ◽  
Vol 525-526 ◽  
pp. 365-368
Author(s):  
Chun Lin Chen ◽  
Yu Long Li ◽  
Fuh Gwo Yuan
Keyword(s):  
Time Reversal ◽  
Composite Structures ◽  
Impact Damage ◽  
High Energy ◽  
Low Velocity ◽  
Energy Impact ◽  
Location Detection ◽  
Focusing Property ◽  
The Impact ◽  
Impact Events

Based on the self-focusing property of time-reversal (T-R) concept, a time focusing parameter was suggested to improve the impact source identification method developed in authors previous work. This paper presents a further study on monitoring relatively high energy impact events which caused induced damage on structures. Numerical verifications for a finite isotropic plate and a composite plate under low velocity impacts are performed to demonstrate the versatility of T-R method for impact location detection with induced plastic deformation and delamination damage on metallic and composite structures respectively. The focusing property of T-R concept was adequately utilized to detect impact/damage location. The results show that impact events with various features can be localized using T-R method by introducing the time focusing parameter. It is suited to monitor serious impact events on plate like structures in practice in future.

scholarly journals Single frequency spatial power combining using sparse array based on time reversal of electromagnetic wave

2015 ◽  
Vol 64 (20) ◽  
pp. 204101
Author(s):  
Chen Qiu-Ju ◽  
Jiang Qiu-Xi ◽  
Zeng Fang-Ling ◽  
Song Chang-Bao
Keyword(s):  
Electromagnetic Wave ◽  
Time Reversal ◽  
Single Frequency ◽  
Power Combining ◽  
Spatial Power Combining ◽  
Sparse Array

SCATTERING OF ELECTROMAGNETIC RADIATION BY A TIME REVERSAL PERTURBATION TOPOLOGICAL INSULATOR CIRCULAR CYLINDER

2013 ◽  
Vol 27 (14) ◽  
pp. 1350098 ◽  
Author(s):  
LUNWU ZENG ◽  
RUNXIA SONG ◽  
XINGLIANG JIAN
Keyword(s):  
Electromagnetic Wave ◽  
Circular Cylinder ◽  
Electromagnetic Radiation ◽  
Electromagnetic Fields ◽  
Topological Insulator ◽  
Time Reversal ◽  
Constitutive Relations ◽  
Numerical Results ◽  
Time Reversal Symmetry ◽  
Maxwell’S Equation

In this paper, we studied the electromagnetic wave scattered by a time reversal symmetry broken topological insulator circular cylinder. According to the constitutive relations of topological insulator and Maxwell's equation, we derived the scattered electromagnetic fields and scattered coefficients. Numerical results show that the scattered width of the time reversal symmetry topological insulator circular cylinder is extraordinarily different from the width produced by the time reversal symmetry broken topological insulator.

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