Antenna Array Parameter Calculation in IE3D?

Hi, now I am using the "Antenna Array Parameter Calculation" in IE3D. I am a little confused about the "Phase Step". Is it in radius or in degree? Thanks.

Hi, antenna_abc:

On PATTERNVIEW of IE3D, you are allowed to find the radiation pattern of an array of multiple elements. You can define multiple 3-D uniform array of one element. The "phase step" allows you to define a phase difference between 2 adjacent elements in the array. All angle related parameters are in always in degree in the GUI on IE3D, unless it is declared as other unit.

Best regards,