Obtaining the Dual Antenna Unmatched S-Parameters
Solve the dual PIFA antenna and obtain the unmatched S-parameters.
- Create a new CADFEKO model.
- Import the antenna model from the dual_antenna.dxf file.
- Use the same approach as the previous model.
- Place wire ports at both feed pads of the dual antenna.
- For the S-parameter request, ensure both ports are active.

Figure 1. S-parameters for the unmatched single antenna.

Figure 2. S-parameters for the unmatched dual antenna.