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Scalable Galvanic Isolators with High Isolation Realized by Magnetoelectric Gyrators

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Abstract

A scalable, passive galvanic isolator, consisting of a ferrite/piezoelectric magnetoelectric (ME) composite with a coil wound round it, was fabricated and developed. In this scheme, the two ports of the isolator exhibit corresponding inductive/capacitive behaviors, and an induced impedance difference facilitates a high isolation realization for signal transferring/blocking. Non-reciprocity of the device was characterized and verified by its mutual transfer impedance. In addition, a key parameter defined by the self-impedance transfer ratio of |Z22|/|Z11| was introduced to quantitatively describe the isolating performance, and the measured |Z22|/|Z11| reached as high as 1220 at the optimum bias of H = 190 Oe. The proposed ferrite/piezoelectric ME isolator exhibiting significant desired properties is of importance for signal propagation/blocking due to its impedance difference and non-reciprocity.

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Data Availability

The data that support the findings of this study are available from the corresponding author upon reasonable request.

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Acknowledgments

This work was financially supported by National Natural Science Foundation of China (NSFC) (Grant Nos. 61973279, 62004177, 62073299), Foundation of Excellent Young Scholars in Henan Province (Grant No. 222300420096), Foundation for University Young Backbone Scholars in Henan Province (Grant No. 2020GGJS122), Key Scientific Research Project of Universities in Henan Province (Grant No. 20A510015) and Project of Central Plains Science and Technology Innovation Leading Talents (Grant No.224200510026). The study at Russia was supported by the Russian Science Foundation Project (Grant No. 22-19-000763).

Funding

National Natural Science Foundation of China, 61973279, Jitao Zhang, 62004177, Qingfang Zhang, 62073299, Liying Jiang, Foundation of Excellent Young Scholars in Henan Province, 222300420096, Jitao Zhang, Foundation for University Young Backbone Scholars in Henan Province, 2020GGJS122, Jitao Zhang, Project of Central Plains Science and Technology Innovation Leading Talents, 224200510026, Liying Jiang, Russian Science Foundation Project, 22-19-000763, D. A. Filippov, Key Scientific Research Project of Universities in Henan Province, 20A510015, Qingfang Zhang

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Authors and Affiliations

  1. College of Electrical and Information Engineering, Zhengzhou University of Light Industry, Zhengzhou, 450002, China

    Jitao Zhang, Baojie Zhang, Qingfang Zhang, Jie Wu, Fang Wang, Liying Jiang & Lingzhi Cao

  2. Institute of Electronic and Information Systems, Novgorod State University, Veliky Novgorod, 173003, Russia

    D. A. Filippov

  3. State Grid of Jiangsu Electric Power Co., Ltd., Nan**g, 210024, China

    Jiagui Tao & **g Chen

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  1. Jitao Zhang
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  2. Baojie Zhang
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Zhang, J., Zhang, B., Zhang, Q. et al. Scalable Galvanic Isolators with High Isolation Realized by Magnetoelectric Gyrators. J. Electron. Mater. 52, 1518–1525 (2023). https://doi.org/10.1007/s11664-022-10135-6

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