Hi Biplob,
As per my understanding, you want to plot the near field (Fresnel region) pattern in MATLAB.
When you plot the radiation pattern using the "pattern" function, it plots the far-field radiation pattern of the antenna.
To plot the near-field radiation pattern, you can use the "patternCustom" function in the Antenna Toolbox. This function allows the user to specify the distance from the antenna.
For more information on "patternCustom" function, you can refer to the following documentation:
