Amplifiers – With semiconductor amplifying device – Including plural stages cascaded
Reexamination Certificate
2009-08-10
2010-12-21
Nguyen, Patricia (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including plural stages cascaded
C330S306000, C330S277000
Reexamination Certificate
active
07855605
ABSTRACT:
An amplifier circuit includes three amplifier units connected in series. The first amplifier unit includes an input connector for inputting signals and a first transistor amplifier module connected to the input connector. The second amplifier unit includes a notch-filter circuit, a main filter circuit and a second transistor amplifier module. The notch-filter circuit allows only signals in a predetermined frequency to be transmitted from the first transistor amplifier module to the second transistor amplifier module and amplified. The main filter circuit filters signals in frequencies different from the predetermined frequency. The third amplifier unit includes a third transistor amplifier module and an output connector for outputting amplified signals.
REFERENCES:
patent: 6681103 (2004-01-01), Rogers et al.
patent: 7221924 (2007-05-01), Zheng et al.
patent: 7266360 (2007-09-01), Kang et al.
patent: 7522024 (2009-04-01), Beffa
patent: 7629850 (2009-12-01), Floyd et al.
patent: 7636021 (2009-12-01), Rohde et al.
patent: 2008/0204148 (2008-08-01), Kim et al.
Chi Mei Communications Systems, Inc.
Nguyen Patricia
Reiss Steven M.
LandOfFree
Amplifier circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Amplifier circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Amplifier circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4222362