METHOD AND APPARATUS FOR MEASURING INVERSE LOSSES IN FERRITE MICROWAVE DEVICE Russian patent published in 1994 - IPC

FIELD: microwave technique. SUBSTANCE: apparatus for measuring losses has serially-connected microwave generator, directional coupler with impedance transformers and meter for measuring the ratio of powers in adjacent arms of secondary channel, a device to be measured, reflected power meter, reflecting member, absorbing load. The reflecting member is located on a length of a regular transmission line and capable of longitudinal movement. During measurements the reflecting member is moved along the transmission line up to a position in which a monitored reflected power level coincides with a predetermined one, then all the signals in an indicator arm of the coupler are compensated for with the aid of the impedance transformer in the adjacent arm, the reflecting member is moved into another position in which the reflected power level coincides with the predetermined one again, the indications of the power ratio meter and displacements of the reflecting member are read out, the measurements are repeated at the presence and absence of the measured ferrite device in the path. Inverse loss value of interest is calculated from the indications of the power ratio meter and displacement value of the reflecting member. EFFECT: enhanced accuracy. 2 cl, 3 dwg