ANSYS HFSS Hybrid Finite Element - Integral Equation Method (FE-BI) Solver
Built upon HFSS domain decomposition and 3-D integral equation technology, this technique provides an ideal open truncation for the HFSS finite element solution using a direct integral equation-based calculation of an open boundary condition. FE-BI combines the best of both methods: the finite elements method's ability to handle complex geometries and the method of moments' direct calculation of the free-space Green's function for accurate radiating and scattering solutions. With this new technology antenna designers can realize increased, essentially ideal, accuracy for radiated far-field solutions to deliver more confidence in the electromagnetic solutions. Simulations involving antenna platform integration can be significantly reduced in size by allowing a conformal radiation boundary, including concave geometries, that reduces the overall volume of the finite element domain.
HFSS Hybrid Solver: Smart phone in vehicle including effects from human body. Technique combines finite elements (FEM) for phone, integral equations (IE) for solving dielectric of human body and conductor of aluminum car chassis and FEBI to couple results between FEM and IE solvers.
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| 3D far field gain patterns for VHF (tail) and UHF (underside) antennas showing modulation due to motion of rotors. Hybrid FEBI solver provides a 17X and 5X more efficient solution for memory and time respectively as compared to FEM only technique. | |
