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Design and analysis of an energy selective rasorber

Published online by Cambridge University Press:  13 October 2023

Kun Yan
Affiliation:
Nanjing University of Aeronautics and Astronautics, Nanjing, China
Yi Wang*
Affiliation:
Nanjing University of Aeronautics and Astronautics, Nanjing, China State Key Laboratory of Millimeter Waves, Nanjing, China
Xiaofan Min
Affiliation:
Nanjing University of Aeronautics and Astronautics, Nanjing, China
Lei Tang
Affiliation:
Nanjing University of Aeronautics and Astronautics, Nanjing, China
Yu Xia
Affiliation:
Nanjing University of Aeronautics and Astronautics, Nanjing, China
You Li
Affiliation:
Nanjing Electronic Equipment Institute, Nanjing, China
*
Corresponding author: Yi Wang; Email: jflsjfls@nuaa.edu.cn

Abstract

By combining the technique of energy selective surface and frequency selective rasorber, an energy selective rasorber is proposed, which performs selective energy protection in the low communication frequency band (0.8–2 GHz) and wave-absorbing property in the high-frequency band (6–18 GHz). The design consists of two layers, of which the bottom one contains a lumped diode structure for energy selection function in the transmission band, while together with the top layer, they perform a wideband wave absorbing function. The simulated and measured results agree well with each other, and both show good absorption in 6–18 GHz and energy-selective property around 1.86 GHz. That is, when the incident power changes from −30 to 14 dBm, the reflection coefficient changes from below −22 dB to above −2 dB, while the transmission coefficient changes from above −3 dB to below −17 dB.

Type
Research Paper
Copyright
© The Author(s), 2023. Published by Cambridge University Press in association with the European Microwave Association

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