Now using LDC1101 for the ranging of metal objects, inductors are using ferrite winding inductors. L:70uH, C:1000pF, Rp 56K s without target.
Now there are three issues during debugging
1. Close range (<8mm) measurement is normal, Rp's stability and resolution is acceptable, but the long distance (>10mm) is not good, very unstable, data jitter coincides, can not be separated.
2. For the long-distance test of question 1 want to use LHR test mode, the test data has been exported, the curve is very good, should comply with the data sheet, but in the test second set of kits (L:69uH), LHR values vary greatly, can not match on, try offset translation is not possible. And it's impossible to find the rules.
3. Can the values derived by LHR derive the distance by formula?
