looking for buddy who have experience of cavity resonator

I want to know the possible excitation techniques, or any related materials. Kind help is deeply appreciated. The cavity is enclosed by PEC wall.

Best Regards,

Hi asdfaaa,

maybe this 1 is of a little help to you.
http://lib.hut.fi/Diss/2000/isbn9512...951225168X.pdf

Cheers,
Element7k