Amplifiers – With semiconductor amplifying device – Including plural amplifier channels
Reexamination Certificate
2008-07-15
2008-07-15
Pascal, Robert (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including plural amplifier channels
C330S296000
Reexamination Certificate
active
07400200
ABSTRACT:
An integrated circuit including a distributed amplifier is disclosed. The integrated circuit includes a plurality of amplification stages, each stage connected to an input signal and an output signal. At least one amplification stage includes an amplification transistor such as a field effect transistor (FET) having a gate, a source, and a drain, the gate connected to the input signal and a feedback path between the drain and the gate. The feedback path is implemented with another FET having a gate, a source, and a drain; its gate is connected to a control signal; its drain is connected to the drain of the amplification FET; and its source is connected to the gate of the amplification FET. The feedback path provides variable resistive feedback and allows the amplification FET to operate at its linear response portion of its characteristic curve even when its gain is controlled by a control signal.
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Ultrahigh Gain Gyrotron Traveling Wave Amplifier, K. R. Chu, H. Y. Chen, C. L. Hung, T. H. Chang, L. R. Barnett, S. H. Chen, T. T. Yang, vol. 81, No. 21; Nov. 23, 1998; pp. 4760-4763.
Frank Michael L.
Fujii Kohei
Avago Technologies Wireless IP Pte Ltd
Nguyen Hieu P
Pascal Robert
LandOfFree
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