MULTIMODE DIRECT-CONVERSION RECEIVER Russian patent published in 2003 - IPC

FIELD: radio engineering. SUBSTANCE: receiver has signal-receiving antenna, band filters that function to filter off signals in each frequency band, amplifying facility for selective signal amplification, quadrature generating facility for producing common-mode and quadrature signals, low-frequency filtering facility for filtering off common-mode and quadrature signals, and single-band processing facility for processing filtered-off common-mode and quadrature signals. Multimode receiver is designed to directly convert signals received using intermediate frequencies in same frequency band as passband of these signals. EFFECT: reduced quantity of electronic components in receiver. 18 cl, 5 dwg