Electrical arrangements for sensor assemblies in electromagnetic navigation systems

A system comprising:

• a sensor assembly including:
• a multilayer circuit including a proximal section, a distal section, and a longitudinal axis,
• the proximal section including a plurality of electrical pads and being at least partially folded,
• a first magnetic field sensor coupled to the multilayer circuit at the distal section and having a primary sensing direction aligned with the longitudinal axis, and
• a second magnetic field sensor coupled to the multilayer circuit at the distal section and oriented with respect to the first magnetic field sensor such that the second magnetic field sensor has a primary sensing direction aligned with an axis orthogonal to the longitudinal axis,
• a housing surrounding the multilayer circuit, the first magnetic field sensor, and the second magnetic field sensor,
• the housing is cylinder shaped,
• wherein the proximal section includes a first leg portion, a second leg portion,
• and a bend portion positioned between the first leg portion and the second leg portion,
• wherein a first subset of the plurality of electrical pads is positioned on the first leg portion,
• and wherein a second subset of the plurality of electrical pads is positioned on the second leg portion.