Figure 6
From: Broadband stripline Lenz lens achieves 11 × NMR signal enhancement
(a) Low frequency homonuclear saddle coil printed on a flexible PCB, which had buried coil wires and an exposed solder pad for additional capacitors. For high frequency homonuclear and heteronuclear experiments, a suitable double resonant trap was added and the saddle coil topology adapted to a parallel design38. (b) PCB partially wound coil on a 3D-printed support frame. (c) Smith chart of a bare saddle coil from 300 kHz to 1 GHz without tuning and matching network, measured on an E5071C network analyzer (Agilent Technologies, California, United States).
