PROCESS DETERMINING DISPERSION CHARACTERISTIC OF REGULAR TRANSMISSION LINE UNDER CONDITION OF MISMATCHED PATH BY METHOD OF FIXED PHASE Russian patent published in 1999 - IPC

FIELD: measurement technology, SHF electronics. SUBSTANCE: process can be used to measure dispersion characteristics of slow-wave structures. Device for realization of process has meter of reflection factor, high- frequency measurement path, used section of regular transmission line, phase shifter and active load R_l connected in series and to first output of meter 1 of reflection factor and wave-meter linked to second output of meter 1 of reflection factor. Process of determination of dispersion characteristics consists in excitation of tested transmission line 4 in specified range of frequencies by SHF oscillations from meter 1 of reflection factor via high-frequency measurement path 2 loaded with resistor R_l, in measurement of frequencies f_1m of minimal value of r_omin1m of summary reflection factor from input of transmission line, in change of phase of load R_l by phase inverter by preset value ξ_mπ, in repeat measurement of frequencies f_2m of minimal value r_omin2m of summary reflection factor, in determination of moderation factor n_m in each subrange by known relations and in construction of characteristics by computed values n_m. EFFECT: measurement of dispersion characteristics under conditions corresponding to operation mode of slow-wave structures at standard working position. 4 dwg, 2 tbl