Cascode-cascade power amplifier assembly

Details Cascode-cascade power amplifier assembly Cascode-cascade power amplifier assembly

2008-12-15

2010-11-30

Pascal, Robert (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural amplifier channels

C330S12400D

Reexamination Certificate

active

07843269

ABSTRACT:
A cascode-cascade power amplifier assembly is provided. Which includes a first common-source amplifier, a second common-source amplifier, a phase shift matching network coupled to the first common-source amplifier and the second common-source amplifier for providing a 90-degree phase shift and allowing less than 50% of the output power of the first common-source amplifier to be transmitted to the second common-source amplifier, a common-gate amplifier which forms a series circuit arrangement with the first-common source amplifier and a parallel circuit arrangement with the second common-source amplifier, and an equivalent quarter-wave or three-quarter wave circuit which forms a series circuit arrangement with the common-gate amplifier and a parallel circuit arrangement with the second common-source amplifier. According to the present invention, the first common-source amplifier and the common-gate amplifier form a cascode main amplifier, while the first common-source amplifier and the second common-source amplifier form a cascade auxiliary amplifier.

REFERENCES:
patent: 3531732 (1970-09-01), Thompson
patent: 6473595 (2002-10-01), Kim et al.

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