Doherty power amplifier with phase compensation

Details Doherty power amplifier with phase compensation Doherty power amplifier with phase compensation

2007-11-13

2007-11-13

Nguyen, Patricia (Department: 2817)

Amplifiers

With semiconductor amplifying device

Including plural amplifier channels

C330S12400D

Reexamination Certificate

active

11097118

ABSTRACT:
A Doherty power amplifier is provided that includes a main amplifier device and an auxiliary amplifier device. The Doherty power amplifier further includes a phase compensation network. The phase compensation network is configured to maintain a substantially constant phase of one of an output signal from the main amplifier device or an output signal from the auxiliary amplifier device across a range of input powers. The Doherty power amplifier further includes an impedance inverter for power combining an output signal of the main amplifier device with an output signal of the auxiliary amplifier device.

REFERENCES:
patent: 5901346 (1999-05-01), Stengel et al.
patent: 6356149 (2002-03-01), Stengel et al.
patent: 6864742 (2005-03-01), Kobayashi
patent: 7053706 (2006-05-01), Kwon et al.
patent: 2005/0017802 (2005-01-01), Robinson
patent: 2006/0152279 (2006-07-01), Kijima
Notification of Transmittal of the International Search Report and the Written Opinion of the International Searching Authority, or the Declaration, Jan. 5, 2007.

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