Beilstein Arch. 2025, 202558. https://doi.org/10.3762/bxiv.2025.58.v1
Published 06 Oct 2025
We present an electromagnetic study of a metamaterial receiver based on split-ring resonators with integrated cold-electron bolometers. We suggest a modified antenna design that allows one to significantly increase the absorbed power and the bandwidth.The trade-off between the bandwidth expansion due to miniaturization and the reduction in absorption efficiency determined by the Airy spot size of the coupling lens is investigated. To solve this issue, a simultaneous miniaturization of the size of the entire structure with an increase in the number of array elements is proposed. The design with a 37-element array demonstrates an increase in power absorption by a factor of 1.4 compared to the original 19-element single-ring array, as well as an increase in operating bandwidth from 160 to 820 GHz.
Keywords: Metamaterial, split-ring resonator, cold electron bolometer
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Matrozova, E. A.; Chiginev, A. V.; Revin, L. S.; Pankratov, A. L. Beilstein Arch. 2025, 202558. doi:10.3762/bxiv.2025.58.v1
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