Comparisons of MOSFET and Relay Switches in Impedance Matching Networks for Wireless Power Transfer
Alexandru, C; Zhu, D
Date: 6 April 2020
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Publisher DOI
Abstract
This paper presents the comparison between using
MOSFET and relay switches in impedance matching networks
(IMN) for inductive wireless power transfer (WPT). Complex
IMN can be designed with multiple tuning branches which match
the system with the optimum impedance. In such cases, it is
required for the branches to be turned on and ...
This paper presents the comparison between using
MOSFET and relay switches in impedance matching networks
(IMN) for inductive wireless power transfer (WPT). Complex
IMN can be designed with multiple tuning branches which match
the system with the optimum impedance. In such cases, it is
required for the branches to be turned on and off accordingly.
This is achieved through the use of switches. Existing research
have mainly used electromechanical relays to perform the
switching. However, relays have the disadvantage of increasing the
IMN size, especially in complex designs. As an alternative, the
MOSFET can be implemented as a switch with a smaller footprint.
It is concluded that the MOSFET AC switch is a suitable option
instead of relays but it requires careful consideration when
implemented due to its parasitic elements.
Engineering
Faculty of Environment, Science and Economy
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