DEVICE FOR MEASURING PHASE VELOCITY DIFFERENCE IN TIED COMMUNICATION LINES Russian patent published in 1995 - IPC

FIELD: microwave technology. SUBSTANCE: phase relations are measured at running wave mode. Device has power divider 1, two-channel switch 2, waveguide double bridge 3, variable length line 4, the first to the third decoupling attenuators 5-7, microwave communication line sections 7 and 8, being equal in length, tied communication line 10 being under test, matched load 11, phase meter 12, transmission line section 13, microwave oscillator 14. Transmission line 10 being under test is brought between outputs of waveguide double T-bridge, measuring input of phase meter 12 and matched load 11. EFFECT: improved precision: improved truth of results. 1 dwg