Array strategy enhances low-frequency radiation intensity and low-frequency magnetic field sensing SNR of magnetoelectric antenna
Source abstract
Abstract
The magnetoelectric (ME) coupling effect is a more effective approach for reducing antenna size. Nevertheless, at low frequencies, a single ME structure generates a weak signal strength and a low signal-to-noise ratio (SNR). This study utilized an array strategy to improve the radiation and induced electromagnetic field performance of ME antennas. In this study, the array ME coupling structure, composed of Metglas and Pb (Zr1−xTix) O3 (PZT) bilayers, was operated through ME coupling resonance modes. The relationship between the sensitivity and SNR of the serially connected ME antenna array and the number of series connections was determined. On the transmission side, the impact of the multi-source power supply modes on the radiation intensity and directivity of the ME antennas was analyzed. The sensitivity, SNR, magnetic detection limit, directivity, and radiation range of the single ME and array ME antennas were tested for the key parameters. Finally, it was demonstrated that at a frequency of 31.75 kHz, the array strategy achieved a low-frequency signal transmission distance of up to 48.1 m, which is 1.7 times that of a single ME antenna. This array strategy significantly enhances the radiation intensity and magnetic field SNR of ME antennas in the low-frequency range, demonstrating its application prospects in the field of low-frequency communication.
Source: crossref · Quality: baseline
Research context
OpenAlex topics: Multiferroics and related materials · Advanced Antenna and Metasurface Technologies · Metamaterials and Metasurfaces Applications
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
The Ministry of Education Key Lab of Micro/Nano Systems for Aerospace, Northwestern Polytechnical University, Ministry of Education 1 , Xi’an 710072, China
Shaan’xi Key Lab of MEMS/NEMS, Northwestern Polytechnical University 2 , Xi’an 710072, China
Funding
National Natural Science Foundation of China · National Key Research and Development Program of China
References (30)
Show source-provided references
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