HFSS Integral Equation Solver Option

The ANSYS HFSS Integral Equation (IE) Solver Option can be added to the ANSYS Electronics Desktop or any of the ANSYS products that utilize the ANSYS Electronics Desktop. This solver-only option does not include a GUI. With this option, you can add the HFSS-IE solver to your existing ANSYS Electronics Desktop cost-effectively and maximize your investment in ANSYS technology.

ANSYS HFSS Integral Equation (IE) Solver

The HFSS integral equation (HFSS-IE) solver uses the method of moments (MoM) technique to solve for the sources or currents on the surfaces of conducting and dielectric objects in open regions. HFSS-IE is effective for radiation and scattering studies of large, mostly conducting structures. It is available in the industry-standard ANSYS HFSS interface to share geometry, material and certain critical solver technology. As with HFSS, adaptive refinement is used to generate the optimum mesh, giving the you added confidence in the results. The solver uses the adaptive cross-approximation (ACA) method in conjunction with an iterative matrix solver to reduce memory and complexity requirements, allowing this tool to be applied to very large problems.

Simulation Results for Blade Antenna on Unmanned Drone

Simulation results for 900 MHz blade antenna on unmanned drone

In applications such as antenna placement, you can link HFSS 3D designs of antennas as sources in an HFSS-IE design using a data link. The source can be created in HFSS, and then, with a few mouse clicks, you can link fields from that simulation into the target HFSS-IE design. In addition, you can include the geometry of the source simulation in the target HFSS-IE design and include its scattering in the final result.

HFSS-IE in combination with HFSS allows you to select the best solver to use for a given situation. In in many cases, you can take advantage of both solvers in a linked project or hybrid solution.

Modeled Currents on Reflector Antenna

Currents on reflector antenna modeled in HFSS-IE with source simulated in a separate HFSS design. The simulation accurately predicts the induced currents on the feed structure.

ANSYS HFSS Physical Optics Solver

HFSS offers a physical optics (PO) solver as part of the IE solver. In PO, a radiation source is used to illuminate the geometry, thus inducing PO currents that then re-radiate. This asymptotic method is extremely useful when solving very large electromagnetic radiation and scattering problems. Applications include large reflector antenna simulations, as well as radar cross section (RCS) of large objects such as aircraft and ships. This capability allows you to illuminate any large structure by an incident plane wave excitation or use a linked HFSS simulation as a source.

Antenna Mounted on International Space Station

Antenna pattern of antenna mounted on International Space Station using physical optics method