Low-Loss Adjustable Networks for Automated Matching of Transmit Coils

Giorgos Katsikatsos¹, Klaas Paul Pruessmann¹

A low-loss, high power handling, custom-made capacitor is used a building unit for an automated L-matching-network controlled by an external computer. The capacitors are adjusted mechanically by piezoelectric motors. Each L-network is characterized completely by its S-matrix and those S-matrices are used in the analytical solution of the invert problem. The result is highly reproducible since it achieves matching for arbitrary loads.