Calculations of Antenna Power Parameters using Ansys HFSS

When dealing with radiated fields, understanding the antenna properties of the radiated bodies is essential. Antennas have many characteristics like gain, bandwidth, directivity, efficiency, and more. The most efficient prediction of an antenna behavior can be achieved through simulation. This requires no prototyping or test setup, which reduces the overall design cycle time.

Ansys HFSS™ high-frequency electromagnetic simulation software is an electromagnetic simulation tool based on the finite element method (FEM). In addition to design and analysis, this tool also provides many visual post-processing results for a better understanding of the underlying physics.

Ansys HFSS software calculates a wide range of antenna parameters to help with this analysis. While the physical interpretation of these parameters is well-explained in the Ansys HFSS software help documentation, certain scenarios can still be challenging to interpret. For instance, applying a matching network through a circuit design with push excitation, or calculating accepted power in multiport cases, can present challenges.

This course provides simulated examples using Ansys HFSS software to illustrate how these parameters are calculated and interpreted. The antenna parameter results are discussed in different scenarios:

• Standalone single-port antenna
• Single-port antenna with matching network
• Multiport antenna