Power amplifying apparatus using asymmetric power drive

Details Power amplifying apparatus using asymmetric power drive Power amplifying apparatus using asymmetric power drive

2008-03-11

2008-03-11

Choe, Henry (Department: 2817)

Amplifiers

With plural amplifier channels

Redundant amplifier circuits

C330S295000

Reexamination Certificate

active

07342444

ABSTRACT:
A power amplifying apparatus includes a Doherty amplifier having a carrier amplifier and a peaking amplifier connected in parallel, each having an input/output matching circuit and an asymmetric power driver for driving the carrier amplifier and the peaking amplifier using an asymmetric power driver.

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Youngoo Yang et al., “A Fully MatchedN-Way Dohetry Amplifier With Optimized Linearity”, proceeding to IEEE Transaction on Microwave theory and techniques, vol. 51, No. 3, Mar. 2003.
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Fumitaka Ilzuka et al., “Highly-Efficient Doherty Linear Amplifier with Input Power Allocation Control for Portable Radio”, IEICE Trans. Electron, vol. E87-C, No. 6 Jun. 2004, pp. 915-923, XP-001196538.

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