High efficiency power amplifier

Details High efficiency power amplifier High efficiency power amplifier

2006-04-04

2006-04-04

Choe, Henry (Department: 2817)

Amplifiers

Combined with automatic amplifier disabling switch means

C330S12400D

Reexamination Certificate

active

07023270

ABSTRACT:
A multiple power mode amplifier provides a low and a high power mode without using switches. This amplifier may be used in RF applications such as mobile telephones. In the low power mode, the power consumption of the amplifier is reduced, which will increase operation time, especially important for battery-operated devices. In one implementation, the amplifier includes a number of impedance matching network units, impedance transformer, and a power stage.

REFERENCES:
patent: 6674323 (2004-01-01), Kagaya et al.
patent: 6700439 (2004-03-01), Jackson
patent: 6781455 (2004-08-01), Kim
patent: 6809587 (2004-10-01), Ghannouchi et al.

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