Radio frequency receiver having serially coupled heterodyning st

Details Radio frequency receiver having serially coupled heterodyning st Radio frequency receiver having serially coupled heterodyning st

1977-05-26

1979-07-03

Griffin, Robert L.

325 11, 325435, 325439, H04B 126

Patent

active

041602129

ABSTRACT:
A radio frequency signal receiver having a plurality of serially coupled frequency converter stages adapted to convert the frequency of a signal having a frequency within a first predetermined band of frequencies to a frequency within a second, smaller predetermined band of frequencies. Each one of the frequency converter stages includes a plurality of bandpass filters, each one thereof being adapted to pass signals within a different portion of a predetermined band of frequencies, and heterodyning means for converting the frequency of a signal passed by any one of the plurality of bandpass filters to a frequency within a smaller predetermined band of frequencies.

REFERENCES:
patent: 2407212 (1946-09-01), Tunick
patent: 2926304 (1960-02-01), Fromm
patent: 3399278 (1968-08-01), Dahlman
patent: 3614627 (1971-10-01), Runyan
patent: 3678387 (1972-07-01), Wilson
patent: 3940697 (1976-02-01), Morgan

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