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Fig. 7 | EURASIP Journal on Wireless Communications and Networking

Fig. 7

From: A new portable ELF Schumann resonance receiver: design and detailed analysis of the antenna and the analog front-end

Fig. 7

Iron shielding of each stage, e.g., the double notch stage. The amplification and filtering chain stages are each arranged inside a metallic box for electromagnetic shielding. In order to achieve efficient noise performance, we designed and implemented such metallic boxes. These implementations provide electromagnetic shielding protection from any interference. Taking into account the extra low-level-induced voltage signal at antenna terminals, we should eliminate any source of interference that will provide signal degradation and distortion

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