I tried to read the article but it's not available, unfortunately. Thank you anyway for your reference! I read also the Marcuvitz's Microwave Handbook: it deals with such a discontinuity, but it considers just the equivalent circuit (an admittance) and not which field components arise from it...
Hello!
This is the first time I write in the forum. I hope to be fully in-topic.
I'm dealing with a rectangular waveguide discontinuity: a perfect-conductor plane orthogonal to the propagation direction, with a circular aperture in the centre of the guide section. The structure is symmetrical...