Patent · US Active

Cascode-cascade power amplifier assembly

US7843269B2 · kind B2 · utility

5Cited by

2References

16Claims

0Family size

Assignee

National Taiwan University · TW

Inventors

Yi-Jan Chen · Jinshanmian, TW
Pang-Jung Liu · Taipei, TW

Key dates

Filing date	Dec 15, 2008
Grant date	Nov 30, 2010
Priority date	—
Expiry date	Jan 28, 2029

Classification

Technology area (CPC H)Electricity
CPC primaryH03F2200/451
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

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.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.