Hello everybody,
in the last few weeks I have been working with the LDC1000 EVM. I want to measure a distance between the planar coil printed on a PCB and an object (for first tests I used a cupper plane on both sides of a PCB).
My printed coil has a outer diameter of 16mm, 23 turns, width of traces and spacing are 0.15mm (6mil).
It's double-layer printed, with a inductance of about 8.85uH.
I want to start with the inductance measurement. For that purpose I use the frequency counter raw data.
Between the minimum and maximum distance (which are around 0.2mm (minimum) and 1mm (maximum)) the resolution of the frequency counter is around 60 units.
How can I improve the resolution to, e.g. 3-5 um? Should I use a coil with a smaller diameter?
Thanks in advance for any advice
Best regards
Stephan