Learning Forum

[DMARATHE]

Hi Nooshin,

Thanks for sharing more details about your project setup.

As I understand, you have a unit cell with periodic boundary conditions which has antenna and skin tissues. In infinite array case, a unit cell is solved, and mathematical equations are used to in principle of pattern multiplications. In my opinion, if you define a non-model plane encompassing the size of 16 x 16 elements to probe a field quantity, you should see the field on the portion of non-model plane intersecting with unit cell box, i.e. of only one unit cell.

The approach to view fields of 16 x 16 elements array will be creating explicit array where you create an explicit array of 16 x 16 elements. This may be computationally demanding.

There is one more approach where you create a unit cell with periodic boundary conditions and create a 3D component of it. You can use an approach of creating an array based of 3D components. You can find more information about this in HFSS help PDF and look for “Create Array Command for 3D Component”. This approach of creating the array saves to some extent simulation time and have a reasonable computing resource. You can also see the near E field by using Near field setups. Furthermore, in 2023R2 there is a beta feature “HFSS component array with Surrounding Geometries”. Using this feature, you can add arbitrary native FEM geometries around the 3D component array, if all geometries are enclosed by an airbox and in your case tissues. However, when you go for surrounding geometries the computational resources becomes more and they are furthermore if you involve complex skin tissue and go for computationally demanding SAR calculations.

Thanks,