Power Transfer for a Moving Vehicle

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Structure of matching circuit

Complex impedance

of tire

Matching

circuit

Matching

circuit

Port 1

（50 W）

Port 2

（50 W）

Vector Network

Analyzer

Block diagram for measurement

Matching circuit 1

Matching circuit 2

Matching circuit 3


	As shown previously, the real and imaginary part of the complex impedance of the tire is very large. In an actual system, it would be possible to adjust a supply circuit to the impedance. However, the supply circuit has not yet been designed. Therefore, a 50-ohm matching circuit designed for use with measurement instruments, such as a Vector Network Analyzer, is used.

	Many matching circuits have been proposed. As an example, three structures of matching circuits are shown here.
	In this study, Matching circuit 3 was selected from the viewpoint of transmission loss.
	[Fig. edit: Space numbers and units (1 MHz).]