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Communication

Negative Group Delay Metamaterials Based on Split-Ring Resonators and Their Application

by
Zheng Liu
,
Jian Zhang
*,
Xue Lei
,
Jun Gao
,
Zhijian Xu
and
Tianpeng Li
National Digital Switching System Engineering and Technological R&D Center, Zhengzhou 450000, China
*
Author to whom correspondence should be addressed.
Electronics 2023, 12(4), 1064; https://doi.org/10.3390/electronics12041064
Submission received: 7 February 2023 / Revised: 15 February 2023 / Accepted: 16 February 2023 / Published: 20 February 2023
(This article belongs to the Special Issue Metamaterials and Metasurfaces)
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Abstract

In this report, negative group delay (NGD) metamaterials based on split-ring resonators (SRRs) are discussed. A theoretical analysis is proposed to calculate the equivalent circuit parameters, NGD values, and S21 amplitudes of two types of SRRs. Metamaterials made from tantalum nitride are simulated, and the parameters of the two types of SRRs are discussed. Prototypes of metamaterials were fabricated and tested. Measured real-world results were found to be consistent with theoretical and simulated predictions. For EC-SRR, a negative group delay of up to −0.1 ns was achieved at 12–13 GHz. For SR-SRR of the same size as the out ring of EC-SRR, a negative group delay of up to −0.04 ns was achieved, with a loss lower than 2.7 dB. The proposed SRRs were applied to continuous transverse stub (CTS) antenna to reduce the beam walk. The simulation shows that the beam walk can be reduced using the proposed metamaterial.
Keywords: negative group delay; split-ring resonator; tantalum nitride negative group delay; split-ring resonator; tantalum nitride

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MDPI and ACS Style

Liu, Z.; Zhang, J.; Lei, X.; Gao, J.; Xu, Z.; Li, T. Negative Group Delay Metamaterials Based on Split-Ring Resonators and Their Application. Electronics 2023, 12, 1064. https://doi.org/10.3390/electronics12041064

AMA Style

Liu Z, Zhang J, Lei X, Gao J, Xu Z, Li T. Negative Group Delay Metamaterials Based on Split-Ring Resonators and Their Application. Electronics. 2023; 12(4):1064. https://doi.org/10.3390/electronics12041064

Chicago/Turabian Style

Liu, Zheng, Jian Zhang, Xue Lei, Jun Gao, Zhijian Xu, and Tianpeng Li. 2023. "Negative Group Delay Metamaterials Based on Split-Ring Resonators and Their Application" Electronics 12, no. 4: 1064. https://doi.org/10.3390/electronics12041064

APA Style

Liu, Z., Zhang, J., Lei, X., Gao, J., Xu, Z., & Li, T. (2023). Negative Group Delay Metamaterials Based on Split-Ring Resonators and Their Application. Electronics, 12(4), 1064. https://doi.org/10.3390/electronics12041064

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