Wireless transmitter and amplifier

Details Wireless transmitter and amplifier Wireless transmitter and amplifier

2006-03-23

2009-02-10

Vuong, Quochien B (Department: 2618)

Telecommunications

Transmitter

Diversity

C455S102000, C455S127200, C375S297000, C330S250000

Reexamination Certificate

active

07489910

ABSTRACT:
There is provided with an amplifier comprising: first and second power amplifiers; a first path configured to output first and second input signals to the first and second power amplifiers; a second path configured to divide a first input signal, output one of divided signals to the first power amplifier and output the other divided signal to the second power amplifier; a first path changeover unit configured to change over the first and second paths; a third path configured to output first and second power amplified signals from the first and second power amplifiers; a fourth path configured to combines a first power amplified signal through an impedance conversion unit from the first power amplifier and a second power amplified signal from the second power amplifier at a combining point and output a combined signal; and a second path changeover unit configured to changeover the third and fourth paths.

REFERENCES:
patent: 5420541 (1995-05-01), Upton et al.
patent: 5668502 (1997-09-01), Rijns
patent: 6084387 (2000-07-01), Kaneko et al.
patent: 6329875 (2001-12-01), Ishida et al.
patent: 6341216 (2002-01-01), Itoh
patent: 2004-179822 (2004-06-01), None
Kenington, High-Linearity RF Amplifier Design, Chapter 8, Section 2, Artech House, 2000.

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