RADIO TRANSMITTER FILTER SYSTEM Russian patent published in 1997 - IPC

FIELD: radio engineering, can be used in development of radio transmitters. SUBSTANCE: radio transmitter filter system has switch 1, N switched channel band-pass harmonic filters 2 ((2₁, 2₂, 2₃, ..., 2_N),), N series-connected oscillatory circuits 3 ((3₁, 3₂, 3₃, ..., 3_N),), N switching elements 4 ((4₁, 4₂, 4₃, ..., 4_N),), correction unit 5 consisting of parallel-connected oscillatory circuit 5₁ and N-1 series-connected oscillatory circuits 5₂, 5₃, ..., 5_N-1. EFFECT: enhanced selectivity without any increase of the quantity of relative elements. 2 cl, 6 dwg