{"id":358609,"date":"2024-03-23T09:16:10","date_gmt":"2024-03-23T09:16:10","guid":{"rendered":"\/forum\/forums\/topic\/fss-unit-cell-with-pin-diode-simulation-using-floquet-port\/"},"modified":"2024-03-23T09:16:10","modified_gmt":"2024-03-23T09:16:10","slug":"fss-unit-cell-with-pin-diode-simulation-using-floquet-port","status":"closed","type":"topic","link":"https:\/\/innovationspace.ansys.com\/forum\/forums\/topic\/fss-unit-cell-with-pin-diode-simulation-using-floquet-port\/","title":{"rendered":"FSS unit-cell with pin diode simulation using Floquet port"},"content":{"rendered":"

I am attempting to simulate a unit cell utilizing a Floquet port. The unit cell contains a pin diode that operates in two states. This diode is connected to the ground via a metal via hole and also includes a bias line. What is the correct procedure to simulate this configuration?<\/p>\n

Initially, I attempted to design the pin diode based on its equivalent circuit using lumped elements, specifically a rectangular surface with boundaries assigned as lumped elements. However, the simulation did not show any noticeable change in the S-parameters when compared to the unit cell without the diode.<\/p>\n

Considering the entire setup from a circuit perspective, the bias line is connected to a controller. One end of the diode is connected to the ground, completing the circuit. For the simulation, I intend to use the equivalent circuit for a single stage (on\/off) and thus, I believe the bias line may not be necessary. In this scenario, would the circuit be complete?<\/p>\n

I have come across some demonstrations of pin diode design within a transmission line, where both ends of the transmission line have lumped port excitations. I’m also curious to know if any modifications are required when using a Floquet port for this purpose.\"\"<\/p>\n

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