45. Coil: Matching circuits

Here are values for inductors and capacitors in a Pi impedance matching network. We consider that the loading causes only a resistive loading. The reactive part of the loading can be first compensated by adding a capacitor or an inductor in series.

1. Codes

This matlab code generates the following graphs. The circuit diagram powerpoint slide is here.

2. Component values

2.1 3T proton MRI (resonant frequency = 123.2 MHz)

2.2 7T proton MRI (resonant frequency = 300 MHz)