DOUBLE-STAGE IMAGE-SUPPRESSION FREQUENCY CHANGER Russian patent published in 1996 - IPC

Abstract RU 2067787 C1

FIELD: radio engineering; superheterodyne receivers oif various applications used to afford image rejection. SUBSTANCE: frequency changer has band filter 1, frequency changer proper 2, intermediate-frequency filters 3,9 ± 90 deg. phase shifter 4, adder 5, heterodyne 6, 90 deg. phase shifter 7, mixer 8, and wave trap 10. EFFECT: improved signal-to-noise ratio at output. 2 cl, 1 dwg

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RU 2 067 787 C1

Authors

Sbitnev Ju.P.

Mymrikova N.N.

Dates

1996-10-10—Published

1992-04-20—Filed