Heterodyne receiver for low noise and image frequency...

Details Heterodyne receiver for low noise and image frequency... Heterodyne receiver for low noise and image frequency...

2008-06-17

2008-06-17

Urban, Edward F. (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

With wave collector

C455S323000, C455S333000, C327S113000

Reexamination Certificate

active

07389098

ABSTRACT:
Disclosed is a heterodyne receiver for low noise and image frequency repression, comprising: a low noise amplifier for receiving an input signal from an antenna and amplifying the signal while reducing a noise figure of the input signal; and a frequency converter for receiving both the input signal outputted from the low noise amplifier and a local oscillation signal, filtering the signals to repress gain of the input signal at an image frequency band and increase gain of the input signal at a signal frequency band, and converting the frequency of the signals to the intermediate frequency band.

REFERENCES:
patent: 6959178 (2005-10-01), Macedo et al.
patent: 6975838 (2005-12-01), Rofougaran et al.
patent: 7248850 (2007-07-01), Shen
patent: 2003/0119474 (2003-06-01), Kimura
patent: 2003/0157912 (2003-08-01), Atkinson et al.
patent: 2000-307350 (2000-11-01), None

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