How to specify matched loads for elements in Antenna Toolbox built-in arrays?

I would like to explore impacts of mutual coupling in antenna arrays. In Matlab's antenna toolbox, the array objects such as linear, rectangular, and circular have 'AmplitudeTaper' for setting the amplitude value per element. It says in the help that setting this to '0' corresponds to a "dead element". Would this also correspond to terminating in a matched load? I would like to explore exciting only 1 element in the array with all others terminated in matched loads for mutual coupling analysis. I'm not certain how the amplitude taper field works in this case, and if a value of '0' re-radiates energy back to the active antenna perturbing the mutual coupling observed, or if I need to add lumped elements to the antennas with matched loads, or something else to get a matched load.