| 摘要 |
FIELD: radio engineering. ^ SUBSTANCE: receiver for reception of a radio-frequency signal comprises a band filter, a computer and a controller. The band filter has a turned pass band and lets a received radio-frequency signal through within the pass band for generation of a filtered signal. The computer calculates the signal/noise ratio of the received radio-frequency signal on the basis of the filtered signal. The controller (20) tunes the filter's pass band so that the calculated signal/noise ratio becomes maximum. ^ EFFECT: minimised effect of a noise wave. ^ 7 cl, 3 dwg |
