Telecommunications – Receiver or analog modulated signal frequency converter – Local control of receiver operation
Patent
1997-07-08
2000-03-07
Eisenzopf, Reinhard J.
Telecommunications
Receiver or analog modulated signal frequency converter
Local control of receiver operation
4551881, 455290, 334 15, H04B 106
Patent
active
060351853
ABSTRACT:
A selective RF circuit for a double conversion tuner includes three double tuned bandpass circuits, each of which is tunable over approximately one-third of the tuning range. Switching diodes are used at the input and the output of each of the bandpass sections for selectively activating one of the bandpass sections and deactivating the remaining ones in response to a bandswitching signal. Operational amplifiers or other devices supply the input and output switching diodes by providing a current sink for the active bandpass and current sources for the inactive bandpasses.
REFERENCES:
patent: 5285179 (1994-02-01), Wignot et al.
patent: 5483209 (1996-01-01), Takayama
Dobrovolny Pierre
Wolford James J.
Bhattacharya Sam
Eisenzopf Reinhard J.
Zenith Electronics Corporation
LandOfFree
Selective RF circuit with varactor tuned bandpass switched bandp does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Selective RF circuit with varactor tuned bandpass switched bandp, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Selective RF circuit with varactor tuned bandpass switched bandp will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-371690