3D waveguide analysis of rect wavguide

Hi ,

currently I am trying to develop a matlab code for calculating the electric field in 3D rectangular metallic waveguide

can any one help me ,what is the equation for point source excitation for the case of 3D point rectangular metallic waveguide how to implement the excitation and equation for this

I hardly find a papers discuss the analytical solution for the 3D case of rectangular waveguide which excited using point source

Thanks
Jake

Every textbook on electromagnetism includes the waveguide analysis, many also nice pictures of the field inside. Learn the basics, then try to develop a matlab code.