== Modeling Finite-Sized Source Arrays ==
You scan can define arrays of sources on arrays of legitimate host objects. If your project in [[EM.Tempo]] has a line array object, you can define a lumped source array associated with it. If your project in [[EM.Picasso]] has an array of rectangle strips or an array of PEC vertical via objects, you can define and place a gap array or an array of probe sources on them, respectively. Similarly, if your project in [[EM.Libera]] has a line array object, a polyline array object, or an array of long, narrow rectangle strips, you can define and place a line gap array or a strip gap array on them, respectively. In all of these cases, the legitimate array objects will also be listed as an eligible object for source placement. A lumped or gap source will then be placed on each element of the array. All the individual sources will have identical direction and offset.
You can prescribe certain amplitude and/or phase distribution over the array of gap or probe sources. By default, all the gap or probe sources have identical amplitudes of 1V (or 1A for the slot case) and zero phase. The available amplitude distributions to choose from include '''Uniform''', '''Binomial''' and '''Chebyshev''' and '''Date File'''. In the Chebyshev case, you need to set a value for minimum side lobe level ('''SLL''') in dB. You can also define '''Phase Progression''' in degrees along all three principal axes. You can view the amplitude and phase of individual sources by right clicking on the top '''Sources''' item in the Navigation Tree and selecting '''Show Source Label''' from the contextual menu.