RADIO RECEIVING WITH ADAPTIVE SUPPRESSION OF NOISES Russian patent published in 1997 - IPC

Abstract RU 2074515 C1

FIELD: radio engineering. SUBSTANCE: radio receiving device with adaptive suppression of noises includes rejection unit 1 incorporating commutators I′, rejection filters I′′ selective circuit 2, radio frequency amplifier 3 with selective load, conversion and amplification path 4, mixer 5, first band-pass filter 6, first intermediate frequency amplifier 7, forming retunable band-pass filter, adjustable minimum amplitude limiter 8, second band-pass filter 9, second intermediate frequency amplifier 10, amplitude detector 11 and D.C. amplifier 12 forming indicator of presence of noise, frequency synthesizer 13, control unit 14 incorporating control panel 15 and testing module 16 and detection path 17. Radio receiving device with adaptive suppression of noises suppresses noises concentrated in spectrum without emergence of undesirable nonlinear effects, i.e. rejection unit is placed ahead of first nonlinear element of device. EFFECT: enhanced efficiency of suppression of noises concentrated in spectrum. 1 dwg

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RU 2 074 515 C1

Authors

Bogachev S.V.

Dates

1997-02-27Published

1993-11-18Filed