===Planewave Source===
Since we're computing a Radar Cross Section, we also need to add a planewave source. For this example, we will specify a TMz planewave with θ = 135 degrees, φ = 0 degrees, or:Â k = sqrt(2)/2 x - sqrt(2)/2 z, or θ Â :<math> k = 135 degrees, φ = 0 degrees.sqrt{2}/2 x - sqrt{2}/2 z </math>
===Mesh Settings===