Patent ID: 8723626

Claim:
An electromagnetic resonance coupler for transmitting a high frequency signal between first resonant wiring and second resonant wiring wirelessly, the electromagnetic resonance coupler comprising: a first substrate; a second substrate facing the first substrate; the first resonant wiring provided on the first substrate and having an open loop shape having an opening; first input/output wiring provided on the first substrate and connected to a first connection point on the first resonant wiring; the second resonant wiring provided on the second substrate and having a same wiring width and shape as a wiring width and shape of the first resonant wiring; second input/output wiring provided on the second substrate and connected to a second connection point positioned on the second resonant wiring a predetermined distance away from a first end of the second resonant wiring; and third input/output wiring provided on the second substrate and connected to a third connection point positioned on the second resonant wiring the predetermined distance away from a second end of the second resonant wiring, wherein when viewed in a direction perpendicular to a main surface of the first substrate, the first resonant wiring and the second resonant wiring are symmetric about a point and have matching contours, and when the high frequency signal is inputted to the electromagnetic resonance coupler, an electrical energy level at the second connection point and the third connection point is half an electrical energy level at a position on the second resonant wiring overlapping the first connection point.