Intro to Ansys HFSS

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Ansys Electronics Desktop (AEDT) provides a comprehensive environment for the design and analysis of electronic components. AEDT offers multiple design types that are required to do a full system analysis. Ansys HFSS, a high-frequency simulation software used for the design and analysis of high-frequency electromagnetic components, is one of the design types integrated in AEDT. HFSS offers various solvers for various applications. It provides a wide variety of reports ranging from 2D rectangular plots to 3D field plots inside complex geometries to help in understanding electromagnetic concepts.

Ansys HFSS can be used to design simple or complex simulation models. This course provides the step-by-step procedures required for analysis using AEDT Student version, but it is the same procedure used for the commercial version also. More details about this student version can be found here.

In this course, we will demonstrate the analysis of different types of waveguides — a simple waveguide, a stacked waveguide, twist and bent waveguides — using the WR-15 standard waveguide as an example.

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Ports are the interfaces of the system through which electromagnetic fields propagate into or away from the system. These ports can be used either as sources or as sinks depending on the requirements of the user. HFSS has various options to generate incident fields that interact with a structure to produce the total fields on the computational need. Some of these excitations offered by HFSS are wave port, lumped port, Floquet port. This course explains briefly about these port types and serves as a guide for selecting the appropriate port types for the user needs.

The Floquet port is one of the excitation types offered by HFSS for the electromagnetic simulations. This kind of port is used exclusively with planar-periodic structures. Some of the examples are planar phased arrays and frequency selective surfaces when these may be idealized as infinitely large. The planar phased arrays are extensively used in 5G, ADAS, V2X applications. In this course we will introduce the Floquet port and its key features followed by analysis of an example.

Antennas are the means of communication that can transmit as well as receive signals. The communication distance depends not only on the operating frequency band but also on the design characteristics of the radiating element. Out of all the available antenna types, patch antennas can be compact and of low profile while having required radiation capabilities. However, certain applications like 5G, ADAS, V2X require these patch antennas implemented in array for having more directional gain, impedance bandwidth, beam steering capability, etc. In this AIC module, we are going to detail microstrip patch and its array as a method of design.