WAVEGUIDE STEPPED ATTENUATOR Russian patent published in 1994 - IPC

FIELD: microwave engineering. SUBSTANCE: waveguide stepped attenuator has section of rectangular waveguide. The latter is connected with waveguide stubs having absorbing loads through slit commutating modules provided with semiconductor diodes. Distance between the rectangular waveguide and the stubs is equal to quarter of wave-length one from another. Quarter wavelength waveguide sections are brought additionally between slit commutating modules and waveguide stubs. Sizes of narrow walls of the quarter wavelength waveguides are lesser than sizes of narrow walls of waveguide stubs. EFFECT: improved reliability of changing microwave signal. 2 cl, 1 dwg