METHOD FOR MEASURING MULTIPLE-SIGNAL SELECTIVITY OF BROADBAND SIGNAL RECEIVER Russian patent published in 2006 - IPC H04B1/10 H04B17/00 

FIELD: measurement technology.

SUBSTANCE: novelty is that proposed method for measuring multiple-signal selectivity of broadband signal receiver involves use of two types of frequency allocation in N (N > 2) interferences; first type includes choice of interference frequencies in vicinity of useful-signal intermediate frequency so as to ensure that third-order intermodulation components from N interferences occurred in each channel of protective unit; second type involves allocation of interference frequencies so that intermodulation components occurred only in 50% of protective-unit channels (number of interferences in both types) being equal); interference power level is increased in first type of interference frequency allocation before reducing output signal-to-noise ratio in proportion to cube of interference power and in second type, before initiating reduction of signal-to-noise ratio in proportion to interference power.

EFFECT: enhanced accuracy in measuring multiple-signal selectivity of broadband signal receiver in narrow-band interference environment.

2 cl, 3 dwg

2 cl, 3 dwg