Patent · US Active

Power efficient transmitter with high dynamic range

US8095092B2 · kind B2 · utility

7Cited by

6References

25Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Jan Müller · Hamburg, DE
Bernhard Sogl · Unterhaching, DE
Wolfgang Thomann · Munich, DE

Key dates

Filing date	Jun 26, 2008
Grant date	Jan 10, 2012
Priority date	—
Expiry date	Aug 21, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04W52/52
WIPO fieldBasic communication processes
WIPO sectorElectrical engineering

Abstract

One embodiment of the present invention relates to a method for transistor matching. The power transmitter comprises a first, second, and third amplification path. The paths are selectively activated and deactivated to output a received signal with high efficiency and linearity. The first amplification path is configured to receive a first signal and output a first amplified signal to a first port of a output power combiner when activated and provide an impedance that results in a high reflection factor when deactivated. The second amplification path is configured to receive a second signal with 90° phase shift with respect to the first signal and output a second amplified signal to a second port of the combiner when activated and provide an impedance that results in a high reflection factor when deactivated. The third amplification path is configured to receive a third signal and output a third amplified signal to a third port of the output power combiner when activated and provide an impedance that results in an impedance that matches the output impedance when deactivated.

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