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Title: Circuit Model for Power Link Budget Between Two Horizontal Loops Placed on Seabed
Authors: Jiménez Yguacel, Eugenio 
Keywords: Electromagnetics
Underwater communications
Magnetic field communications
Sea water seabed interface
Loop antenna, et al
Issue Date: 2020
Journal: IEEE Magnetics Letters 
Abstract: In this letter, we examine underwater wireless communications using electromagnetic waves in marine shallow waters. Due to the particular environment under study (low frequencies, short distances, and small loop antennas), a magnetoquasi-static approach is used instead of full-wave analysis. The electric field generated by a constant current circular loop placed on the interface between two conductors is analytically calculated. Using this electric field, the mutual coupling coefficient between the two loops is calculated, and a simple circuit model for transmitting energy from one loop to another is presented using a transformerlike element. Simulations using the circuit model and a commercial full-wave simulator are carried out, and their results are compared. Very good agreement is observed between both results.
ISSN: 1949-307X
DOI: 10.1109/LMAG.2020.2982610
Source: IEEE Magnetics Letters [ISSN 1949-307X], v. 11
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