Design of High Gain and High Sensitivity Extremely-Low Frequency Magnetic Signal Receiving System

被引：1
|
作者：
Zhang, Wenhou [1 ]
Cao, Zhenxin [1 ]
Wang, Zongxin [1 ]
Wang, Xiaoyu [2 ]
Yang, Wenfan [2 ]
机构：
[1] Southeast Univ, Sch Informat Sci & Engn, Nanjing 210000, Peoples R China
[2] Dalian Jiaotong Univ, Sch Mech Engn, Dalian 116000, Peoples R China
来源：
IEEE TRANSACTIONS ON CIRCUITS AND SYSTEMS I-REGULAR PAPERS | 2024年 / 71卷 / 09期
关键词：
Coils; Sensitivity; Antennas; Impedance; Receiving antennas; Receivers; Noise; Extremely low frequency; magnetic; receiving antenna; sensitivity; ANTENNA;
D O I：
10.1109/TCSI.2024.3425730
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
The low attenuation rate of extremely low frequency (ELF) (30 similar to 300Hz) makes it of wide interest in submarine communication and long-distance cross-domain communication. In this paper, a high gain and high sensitivity magnetic signal receiving system is developed based on a new ELF mechanical antenna with a typical frequency point of 75 Hz. The system includes a magnetic sensing receiving antenna, an impedance conversion transformer, an amplifier, and a filter. Each module describes in detail the design and associated tradeoffs that allow this receiving system to be applied to any magnetically inductive antenna of the same impedance. In this paper, a receiving system is developed using a 2.85 Omega-48.2mH impedance antenna as an example. The receiver system has a gain of 58.6 dB at an operating frequency of 75 Hz, a receiver sensitivity of 1.5pT/Hz(1/2), an operating bandwidth of 10 Hz, and a rejection of 16.7 dB at an operating frequency of 50 Hz.
引用
收藏
页码：4055 / 4063
页数：9
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