Introduction - If you have any usage issues, please Google them yourself
{
File: rectangular array antenna pattern
Function: rectangular array antenna pattern
Parameters: the beam direction Angle: phi0 20 degrees
Pitching Angle: theta0 30 degrees
Number of array element: Nx* Ny 30* 30
Dx dy 0.5 \ lambda
Horizontal direction set u equals sin ` Bcos \ phi
Vertical direction set v sinBsin \ phi