Doherty amplifier

Japanese Patent JP6122044

B2

A Doherty amplifier (1) includes an input terminal (10), an output terminal (20), a splitter (12), a combiner (22), a carrier amplifier (14), a peak amplifier (16). The splitter is connected to the input terminal, the splitter having first and second outputs. The combiner is connected to the output terminal, the combiner having first and second inputs. The carrier amplifier includes a first input-side two-port network connected to the first output of the splitter, a first amplifier connected to an output of the first input-side two-port network, and a first output-side two-port network connected between an output of the first amplifier and the first input of the combiner. The peak amplifier includes a second input-side two-port network connected to the second output of the splitter, a second amplifier connected to the output of the second input-side two-port network, and a second output-side two-port network connected between an output of the second amplifier and the second input of the combiner. The combiner is a series-connected load type having a series connection of the output-side two-port network of the carrier amplifier with the output-side two-port network of the peak amplifier and the output terminal. The load impedance is expressed using a complex number.

WO/2021/250721	AMPLIFICATION CIRCUIT
JPH10513631	[Title of Invention] An amplifier circuit and a method for adjusting an amplifier circuit.
WO/2010/071248	ENHANCED CHIREIX COMBINER

Kazuki Takagi
Naotaka Tomita

JP2015003565A

April 26, 2017

January 09, 2015

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Toshiba Corporation

H03F1/07; H03F3/24; H03F3/68

JP2009165037A
JP2008005321A
JP2016019228A

WO2014089695A1
WO2013015778A1

Shiga International Patent Office

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