Broadband Adapt For Conical Sinuous Spiral Antenna

The figures below shows a conical sinuous spiral antenna design in HFSS.

Perfect E boundary conditions are assigned on the four arms of the antenna and the feed metal.

The antenna is excited with a lumped port.

The Broadband Frequency Analysis Setup definitions are as follows:

• Broadband Frequency Range = 2 GHz to 15 GHz.
• An interpolating S-parameter frequency sweep ranges from 2 GHz to 15 GHz.
• Auto HPC is defined and 12 cores are used for the simulation.

The return loss after running the broadband solution frequency setup simulation is shown in the following figure.