Amplifiers – With semiconductor amplifying device – Including differential amplifier
Reexamination Certificate
2011-07-12
2011-07-12
Mottola, Steven J (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including differential amplifier
Reexamination Certificate
active
07978009
ABSTRACT:
A digital modulated power amplifier unit includes a differential radio frequency (RF) amplifier circuit having differential output nodes, a digital modulation signal input and complimentary clock signal inputs. The differential RF amplifier circuit includes a first pair of transistors operable to receive a digital modulation signal and a second pair of transistors operable to receive complimentary clock signals. The digital modulated power amplifier unit further includes an impedance compensation circuit connected between the differential output nodes of the differential RF amplifier circuit. The impedance compensation circuit includes a transistor connected in series between first and second RC circuits. The transistor is operable to electrically connect and disconnect the first RC circuit and the second RC circuit responsive to the digital modulation signal.
REFERENCES:
patent: 6215355 (2001-04-01), Meck et al.
patent: 7183844 (2007-02-01), Klomsdorf et al.
patent: 7202747 (2007-04-01), Forse et al.
patent: 7405685 (2008-07-01), Rezeq et al.
patent: 7773693 (2010-08-01), Brobston
patent: 2003/0025561 (2003-02-01), Hoheisel et al.
patent: 2006/0078067 (2006-04-01), Brobston
patent: 2009/0066440 (2009-03-01), Chan Wai Po et al.
patent: 2006/033722 (2006-03-01), None
patent: 2007/122562 (2007-11-01), None
Coats & Bennett P.L.L.C.
Mottola Steven J
Telefonaktiebolaget LM Ericsson (publ)
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