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Unidirectional invisibility induced by parity-time symmetric circuit.
Lv, Bo; Fu, Jiahui; Wu, Bian; Li, Rujiang; Zeng, Qingsheng; Yin, Xinhua; Wu, Qun; Gao, Lei; Chen, Wan; Wang, Zhefei; Liang, Zhiming; Li, Ao; Ma, Ruyu.
Affiliation
  • Lv B; Microwave and Electromagnetic Laboratory, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin City, Heilongjiang Province, China.
  • Fu J; Microwave and Electromagnetic Laboratory, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin City, Heilongjiang Province, China.
  • Wu B; School of Electronic Engineering, Xidian University, Xi'an, 710071, China.
  • Li R; College of Information Science and Electronic Engineering, Zhejiang University, Hangzhou 310027, China.
  • Zeng Q; Propagation Group, Wireless Technologies Branch, Communications Research Centre Canada, Government of Canada, 3701 Carling Ave., Box 11490, Station H, Ottawa, Ontario K2H 8S2, Canada.
  • Yin X; Harbin medical university, No. 157, Baojian Street, Nangang District, Harbin City, Heilongjiang Province, China.
  • Wu Q; Microwave and Electromagnetic Laboratory, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin City, Heilongjiang Province, China.
  • Gao L; Propagation Group, Wireless Technologies Branch, Communications Research Centre Canada, Government of Canada, 3701 Carling Ave., Box 11490, Station H, Ottawa, Ontario K2H 8S2, Canada.
  • Chen W; Microwave and Electromagnetic Laboratory, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin City, Heilongjiang Province, China.
  • Wang Z; Microwave and Electromagnetic Laboratory, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin City, Heilongjiang Province, China.
  • Liang Z; Microwave and Electromagnetic Laboratory, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin City, Heilongjiang Province, China.
  • Li A; Microwave and Electromagnetic Laboratory, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin City, Heilongjiang Province, China.
  • Ma R; Microwave and Electromagnetic Laboratory, Harbin Institute of Technology, No. 92, Xidazhi Street, Nangang District, Harbin City, Heilongjiang Province, China.
Sci Rep ; 7: 40575, 2017 01 18.
Article in En | MEDLINE | ID: mdl-28098258
ABSTRACT
Parity-time (PT) symmetric structures present the unidirectional invisibility at the spontaneous PT-symmetry breaking point. In this paper, we propose a PT-symmetric circuit consisting of a resistor and a microwave tunnel diode (TD) which represent the attenuation and amplification, respectively. Based on the scattering matrix method, the circuit can exhibit an ideal unidirectional performance at the spontaneous PT-symmetry breaking point by tuning the transmission lines between the lumped elements. Additionally, the resistance of the reactance component can alter the bandwidth of the unidirectional invisibility flexibly. Furthermore, the electromagnetic simulation for the proposed circuit validates the unidirectional invisibility and the synchronization with the input energy well. Our work not only provides an unidirectional invisible circuit based on PT-symmetry, but also proposes a potential solution for the extremely selective filter or cloaking applications.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Sci Rep Year: 2017 Document type: Article Affiliation country: China
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Add to My VHL
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Sci Rep Year: 2017 Document type: Article Affiliation country: China