Hello, so I have played you need is the design and optimization of a sensor. you intend to simulate your project with comsol multiphysics. since this deliver results more reliable and has a solver frequency harmonic what would enable US to parametrizar your model to the values you need. I have extensive experience in electronics and simulation of physics of magnetism. the design also can be performed in altium or Proteus. I guarantee excellent results and a high level of detail in technical documents.
We suggest that check my profile in freelancer on projects ugly. I am currently simulating a number of linear Motors three-phase and analyzing a draft a stack of hydrogen for electric vehicles, but I have done other projects include physics fluid, change phases, heat transfer and radiation. An example, is the recovery of waste heat of photovoltaic panels through a process thermodynamic with which through saturated steam transfer enthalpy to a micro turbine.
Contact me if you are interested in review some reports of my projects, so you can view the level of detail