Exploiting characteristic mode theory for the design of a chipless RFID tag

2014 ◽  
Author(s):  
Theodoros N. Kaifas ◽  
Elias Vafiadis ◽  
Ronis Maximidis ◽  
Constantinos Zekios ◽  
George Kyriakou
Keyword(s):  
Characteristic Mode ◽  
Rfid Tag ◽  
Mode Theory ◽  
Chipless Rfid ◽  
Characteristic Mode Theory

scholarly journals DESIGN OF A DUAL-BAND ANTENNA SYSTEM FOR LTE-M AND LTE-MIMO BY EXPLOITING THE CHARACTERISTIC MODE THEORY

2020 ◽  
Vol 93 ◽  
pp. 11-21
Author(s):  
Kadidiatou Diallo ◽  
Aliou Diallo ◽  
Ibra Dioum ◽  
Samuel Ouya ◽  
Jean Marc Ribero
Keyword(s):  
Antenna System ◽  
Dual Band ◽  
Characteristic Mode ◽  
Mode Theory ◽  
Dual Band Antenna ◽  
Characteristic Mode Theory

scholarly journals Partial-Structure-Oriented Work-Energy Theorem Based Characteristic Mode Theory for Yagi-Uda Array Antennas

2021 ◽  
Author(s):  
Renzun Lian ◽  
Mingyao Xia ◽  
Xingyue Guo
Keyword(s):  
Transformation Process ◽  
Essential Difference ◽  
Energy Transformation ◽  
Partial Structure ◽  
Characteristic Mode ◽  
Mode Theory ◽  
Array Antennas ◽  
Current Interaction ◽  
The Difference ◽  
Characteristic Mode Theory

Partial-structure-oriented work-energy theorem (WET) governing the work-energy transformation process of Yagi-Uda array antennas is derived. Driving power as the source to sustain a steady work-energy transformation is introduced. Employing WET and driving power, the essential difference between the working mechanisms of scattering objects and Yagi-Uda array antennas is revealed. The difference exposes that the conventional characteristic mode theory (CMT) for scattering objects cannot be directly applied to Yagi-Uda array antennas. Under WET framework, this paper proposes a generalized CMT for Yagi-Uda antennas. By orthogonalizing driving power operator (DPO), the WET-based CMT can construct a set of energy-decoupled characteristic modes (CMs) for an objective Yagi-Uda antenna, and then can provide an effective modal analysis for the Yagi-Uda antenna. In addition, a uniform interpretation for the physical meaning of the characteristic values / modal significances (MSs) of metallic, material, and metal-material composite Yagi-Uda antennas is also obtained by employing the WET-based modal decomposition and the field-current interaction expression of driving power.

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