Figure 3
From: Inductively-overcoupled coil design for high resolution magnetic resonance imaging

Frequency response curves (amplitude and phase) of the primary (a,c) and secondary (b,d) coil currents for five different values of coupling coefficient k = 0.1,0.3,0.5,0.7 and 0.9, when Q p = Q s = 50, f 0s = 400 MHz and f 0p = 1000 MHz. Arrows indicate the direction of increased k values.