Output circuit for a semiconductor amplifier element

Details Output circuit for a semiconductor amplifier element Output circuit for a semiconductor amplifier element

2006-10-10

2006-10-10

Mottola, Steven J. (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including frequency-responsive means in the signal...

C330S292000

Reexamination Certificate

active

07119623

ABSTRACT:
An output circuit for a semiconductor amplifier element having an output capacitance (20, 42) that is to be cancelled by a first LC circuit having a first inductance (22, 44) and a first capacitance (24, 46), said output circuit comprising an additional inductance circuit with an additional inductance (30, 52) and an additional capacitance (32, 54), said first inductance circuit and said additional inductance circuit compensating for the output capacitance (20, 42) of the semiconductor amplifier element, while the first inductance (22, 44) and the first capacitance (24, 46) cancel out the second harmonics within the output signal of the semiconductor amplifier element.

REFERENCES:
patent: 6724255 (2004-04-01), Kee et al.
“Class-F power amplifiers with maximally flat wave forms” by Frederic H. Raab. IEEE Transactions on Microwave Theory and Techniques, vol. 45, No. 11, Nov. 1997.

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