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Self-Shielded Topological Receiver Protectors

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  • M. Reisner
  • D.H. Jeon
  • C. Schindler
  • H. Schomerus
  • F. Mortessagne
  • U. Kuhl
  • T. Kottos
Article number034067
<mark>Journal publication date</mark>26/03/2020
<mark>Journal</mark>Physical Review Applied
Issue number3
Number of pages9
Publication StatusPublished
<mark>Original language</mark>English


Receiver protectors (RPs) shield sensitive electronics from high-power incoming signals that might damage them. Typical RP schemes range from simple fusing and PIN diodes to superconducting circuits and plasma cells-each having a variety of drawbacks ranging from unacceptable system downtime and self-destruction to significant insertion losses and power consumption. Here, we theoretically propose and experimentally demonstrate a unique self-shielding RP based on a coupled-resonator microwave waveguide, with a topological defect being inductively coupled to a diode. This RP utilizes a charge-conjugation-(C) symmetric resonant-defect mode that is robust against disorder and demonstrates high transmittance at low incident powers. When the incident power exceeds a critical value, a self-induced resonant trapping effect occurs, leading to a dramatic suppression of transmittance and a simultaneous increase of the reflectance close to unity. The proposed RP device is self-protected from overheating and electrical breakdown and can be utilized in radars, reflection altimeters, and a broad range of communication systems.

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© 2020 American Physical Society