Hi trixieb239,
There is more about the different types of support systems that are most suitable for different types of mattresses in the foundation post here. Either of the options they offer would work well (the Simple Life foundation here or the Genius Hi Rise frame here).
Other similar types of foundations or frames including wooden slat foundations that provide even non flexing support under the mattress would also be fine. I would avoid using a box spring (which have springs that flex inside them) under a foam mattress unless it’s a specific part of the design of the sleeping system.
Phoenix