US Patent 11169008 Transmitter and receiver configuration for inductive position encoder

An electronic position encoder includes a scale and detector. The detector includes a field generating coil (FGC) having elongated portion configurations (EPCs) bounding a generated field area (GFA) aligned with sensing elements in a sensing area, to provide position signals responsive to the scale interacting with the generated field. Sensing elements and EPCs are fabricated in “front” layers of the detector portion. The EPCs include end gradient arrangements (EGAs) configured to reduce field strength in the generated field area as a function of position along the x-axis direction for positions approaching the end of the GFA. A shielded transverse conductor portion (TCP) fabricated in a “rear” layer connects the EPCs and/or EGAs of the FGC via feedthroughs. A conductive shield region (CSR) configuration in a CSR layer between the front and rear layers intercepts at least a majority of a projection of the TCP toward the front layers.