Amplifiers – With plural amplifier channels – Redundant amplifier circuits
Reexamination Certificate
2008-01-30
2010-02-16
Mottola, Steven J (Department: 2817)
Amplifiers
With plural amplifier channels
Redundant amplifier circuits
C330S295000
Reexamination Certificate
active
07663434
ABSTRACT:
The present invention relates to the construction of output stage of the Doherty amplifier and comprises a main amplifying unit, an auxiliary amplifying unit and a compact λ/4 line connecting two amplifying units. The compact λ/4 line connecting two amplifying units includes a first parallel capacitor grounded by being connected to the main amplifying unit in parallel; a second parallel capacitor grounded by being connected to the auxiliary amplifying unit in parallel; and an inductor or a microstrip transmission line connecting the main amplifying unit and the auxiliary amplifying unit. The Doherty amplifier in accordance with the present invention further comprises a matching network unit connecting to a final output by connecting the main amplifying unit and the auxiliary amplifying unit and; and a λ/4 line used as the voltage inputs of the main amplifying unit and the auxiliary amplifying unit.
REFERENCES:
patent: 2007/0139106 (2007-06-01), Dittmer et al.
patent: 2007/0229165 (2007-10-01), Elmala et al.
patent: 2002204133 (2002-07-01), None
patent: 05029851 (2005-02-01), None
patent: 1020050029998 (2005-03-01), None
Jung Sung-Chan
Park Hyun-Chul
Yang Youn-goo
Mottola Steven J
Sungkyunkwan University
LandOfFree
Doherty amplifier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Doherty amplifier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Doherty amplifier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-4232702