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A Tunable K-Band Reflector
  • Christoph Kohlberger ,
  • Andreas Stelzer ,
  • Andrew Kearns
Christoph Kohlberger
Silicon Austria Labs GmbH

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Andreas Stelzer
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Andrew Kearns
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This letter presents a concept for a surface exhibiting tunable reflectivity that operates within the K-band using varactor diodes. Thereby, the impedance of a two-layer metasurface is controlled through lumped components at its back side and not from the front, where discrete elements would scatter the incident wave. A reflector's design, verification, and modelling through an equivalent circuit as well as full-wave simulations are presented in detail. Finally, the tunable reflection parameters of the surface as well as its reflection beam pattern under different biasing conditions are shown.
Feb 2023Published in IEEE Antennas and Wireless Propagation Letters volume 22 issue 2 on pages 328-332. 10.1109/LAWP.2022.3210225