Institute of High Technologies, Taras Shevchenko National University of Kyiv, Kyiv, Ukraine.
Electrical and Computer Engineering Department, Oakland University, Rochester, MI, 48309, USA.
Sci Rep. 2023 Jan 20;13(1):1179. doi: 10.1038/s41598-023-28279-8.
This work is on the design, fabrication and characterization of a hexagonal ferrite band-pass filter that can be tuned either with a magnetic field or an electric field. The filter operation is based on a straight-edge Y-type hexagonal ferrite resonator symmetrically coupled to the input and output microstrip transmission lines. The ZnYfilter demonstrated magnetic field tunability in the 8-12 GHz frequency range by applying an in-plane bias magnetic field H provided by a built-in permanent magnet. The insertion loss and 3 dB bandwidth within this band were 8.6 ± 0.4 dB and 350 ± 40 MHz, respectively. The electric field E tunability of the pass-band of the device was facilitated by the nonlinear magnetoelectric effect (NLME) in the ferrite. The E-tuning of the center frequency of the filter by (1150 ± 90) MHz was obtained for an input DC electric power of 200 mW. With efforts directed at a significant reduction in the insertion loss, the compact and power efficient magnetic and electric field tunable ZnY band-pass filter has the potential for use in novel reconfigurable RF/microwave devices and communication systems.
这项工作是关于设计、制造和表征一种六边形铁氧体带通滤波器，它可以通过磁场或电场进行调谐。滤波器的工作原理基于直边 Y 型六边形铁氧体谐振器，它与输入和输出微带传输线对称耦合。ZnY 滤波器通过内置永磁体提供的面内偏置磁场 H 在 8-12 GHz 频率范围内实现了磁场可调谐性。在该频段内，插入损耗和 3 dB 带宽分别为 8.6±0.4 dB 和 350±40 MHz。通过铁氧体中的非线性磁电效应（NLME）实现了器件通带的电场 E 调谐性。对于 200 mW 的输入直流功率，滤波器的中心频率通过（1150±90）MHz 的 E 调谐获得。通过努力显著降低插入损耗，这种紧凑且节能的磁场和电场可调谐 ZnY 带通滤波器有望用于新型可重构射频/微波器件和通信系统。
