A comparison of the magnetic and electric field formulations and their postprocessing functionals in the finite element analysis of passive microwave devices


  • Ben G. Lawrence,

  • Gregory K. Cambrell


Using a waveguide T junction and an orthogonal mode transducer as illustrative examples, the admittance matrix elements for a passive microwave device are computed by three-dimensional finite element analysis from the magnetic field formulation having natural Neumann boundary conditions and from the electric field formulation having enforced Dirichlet boundary conditions. The results from these two formulations are compared using both linear and bilinear postprocessing functionals.