Coupling of Two Rectangular Waveguides Through a Slot with an Impedance Membrane

A mathematical model of the T-junction of two rectangular waveguides coupling through a narrow slot is developed by a method of induced magnetomotive forces (MMF). A membrane made of a material with metallic properties overlaps the slot aperture. The hollow waveguides are working in single mode regime. It was shown that a thin bismuth membrane can be used to control power division between the output arms of the waveguide junction.