Low noise cascode amplifier

Details Low noise cascode amplifier Low noise cascode amplifier

2009-06-25

2011-10-18

Mottola, Steven J (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural stages cascaded

Reexamination Certificate

active

08040188

ABSTRACT:
The present invention relates to a low noise cascode amplifier comprising a first transistor, a second transistor, a third transistor, a first inductor, and a second inductor. Furthermore, the first transistor can connect with the second transistor via the first inductor, and the second transistor can connect with the third transistor via the second inductor; thereby, a cascode device can be formed. The inductor and the parasitic capacitances can resonate at high frequency, so that the noise figure of the cascode amplifier can be reduced.

REFERENCES:
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patent: 6522195 (2003-02-01), Watanabe et al.
patent: 6556085 (2003-04-01), Kwon et al.
patent: 2006/0103468 (2006-05-01), Su et al.
patent: 2006/0267682 (2006-11-01), Grebennikov
patent: 2007/0285175 (2007-12-01), Oh et al.
patent: 2010/0259331 (2010-10-01), Duster et al.
patent: 200816624 (2008-04-01), None
patent: 200820589 (2008-05-01), None

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