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Rigorous design of matched wireless power transfer links based on inductive coupling
Author(s) -
Monti G.,
Costanzo A.,
Mastri F.,
Mongiardo M.,
Tarricone L.
Publication year - 2016
Publication title -
radio science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.371
H-Index - 84
eISSN - 1944-799X
pISSN - 0048-6604
DOI - 10.1002/2016rs006043
Subject(s) - wireless power transfer , maximum power transfer theorem , inductive coupling , inductance , wireless , electrical impedance , formalism (music) , coupling (piping) , computer science , topology (electrical circuits) , electronic engineering , port (circuit theory) , input impedance , power (physics) , resonant inductive coupling , electrical engineering , physics , engineering , telecommunications , energy transfer , voltage , mechanical engineering , art , musical , visual arts , quantum mechanics , molecular physics
Abstract This paper focuses on a near‐field wireless power transmission link consisting of two magnetically coupled inductances. The case of a resonant coupling realized by adding appropriate compensating capacitances is solved. By using a network formalism, the link is modeled as a two‐port network and rigorously analyzed in the case where both the input impedance and the load are specified. In particular, it is demonstrated that there is just one optimum design of the network that allows maximizing both the efficiency and the active power on the load. Closed‐form design formulas for the optimum design are presented and validated by circuital simulations.