Notice of Retraction: Extension of the Unmatched-Media Time Reversal Method to Locate Longitudinal Soft Defects in Transmission Lines

2018 ◽  
Vol 60 (6) ◽  
pp. 1980-1986 ◽  
Author(s):  
Carlo Olivieri ◽  
Antonio Orlandi ◽  
Enza Pellegrino
Keyword(s):  
Transmission Lines ◽  
Time Reversal

scholarly journals Perfect absorption in complex scattering systems with or without hidden symmetries

2020 ◽  
Vol 11 (1) ◽  
Author(s):  
Lei Chen ◽  
Tsampikos Kottos ◽  
Steven M. Anlage
Keyword(s):  
Transmission Lines ◽  
Time Reversal ◽  
Laser Cavity ◽  
Wireless Power ◽  
Perfect Absorption ◽  
Hidden Symmetries ◽  
Hidden Symmetry ◽  
Coherent Perfect Absorption ◽  
Wavefront Shaping ◽  
Coupled Transmission Lines

AbstractWavefront shaping (WFS) schemes for efficient energy deposition in weakly lossy targets is an ongoing challenge for many classical wave technologies relevant to next-generation telecommunications, long-range wireless power transfer, and electromagnetic warfare. In many circumstances these targets are embedded inside complicated enclosures which lack any type of (geometric or hidden) symmetry, such as complex networks, buildings, or vessels, where the hypersensitive nature of multiple interference paths challenges the viability of WFS protocols. We demonstrate the success of a general WFS scheme, based on coherent perfect absorption (CPA) electromagnetic protocols, by utilizing a network of coupled transmission lines with complex connectivity that enforces the absence of geometric symmetries. Our platform allows for control of the local losses inside the network and of the violation of time-reversal symmetry via a magnetic field; thus establishing CPA beyond its initial concept as the time-reversal of a laser cavity, while offering an opportunity for better insight into CPA formation via the implementation of semiclassical tools.

Norm Criteria in the Electromagnetic Time Reversal Technique for Fault Location in Transmission Lines

2018 ◽  
Vol 60 (5) ◽  
pp. 1240-1248 ◽  
Author(s):  
Shao-Yin He ◽  
Yan-Zhao Xie ◽  
Zhao-Yang Wang ◽  
Farhad Rachidi ◽  
Bu-Ying Liu ◽  
...  
Keyword(s):  
Transmission Lines ◽  
Time Reversal ◽  
Fault Location
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