Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2005-07-18
2008-08-05
Nguyen, Khanh V (Department: 2817)
Amplifiers
Combined with automatic amplifier disabling switch means
C330S302000
Reexamination Certificate
active
07408405
ABSTRACT:
For use in an amplifier configuration including a high-power amplifier and a low-power amplifier which are always interconnected in terms of high frequencies and between which switching is made using no switches, a highly stable high-frequency power amplifier module with high isolation between the amplifiers is provided. To reduce wrapping around from a low-power amplifier section in an activated state to a high-power amplifier section in a deactivated state or from the high-power amplifier section in an activated state to the low-power amplifier section in a deactivated state, an input matching circuit having high isolation characteristics is included in an input matching circuit portion which does not have much to do with amplifier efficiency. Switching of each of the amplifier sections between an activated state and a deactivated state is effected by control using bias input terminals.
REFERENCES:
patent: 5548246 (1996-08-01), Yamamoto et al.
patent: 6114911 (2000-09-01), Iwai et al.
patent: 6674323 (2004-01-01), Kagaya et al.
patent: 6765439 (2004-07-01), Choi
patent: 6853243 (2005-02-01), Sekine et al.
patent: 7123096 (2006-10-01), Selin
patent: 2003/0025555 (2003-02-01), Ohnishi et al.
patent: 07-336168 (1995-12-01), None
patent: 2003-046340 (2003-02-01), None
patent: 2003-087059 (2003-03-01), None
patent: 2003-087060 (2003-03-01), None
Matsumoto Hidetoshi
Ohnishi Masami
Tanoue Tomonori
Miles & Stockbridge P.C.
Nguyen Khanh V
Renesas Technology Corp.
LandOfFree
High-frequency power amplifier module does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with High-frequency power amplifier module, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and High-frequency power amplifier module will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4001402