![]() ![]() ![]() On basis of field programmable gate array (FPGA) device and Universal Serial Bus (USB) architecture, the digital receiver is developed along with time keeping and synchronization module. A new structure is adopted in the analog front end to provide high common-mode rejection and to reduce interference. This paper presents the principle and architecture of the system framework, including magnetic loop antenna design, low-noise analog front-end and digital receiver with data sampling and transmission. ![]() These low-frequency radio waves are useful for ionospheric remote sensing, geospace environment monitoring, and submarine communications. A new digital low-frequency receiver system has been developed at Wuhan University for sensitive reception of low-latitude broadband Extremely Low Frequency (ELF) and Very Low Frequency (VLF) radio waves originating from either natural or artificial sources. ![]()
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