Title:
SYMMETRY DOHERTY POWER AMPLIFICATION CIRCUIT APPARATUS AND POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2017/028563
Kind Code:
A1
Abstract:
Disclosed are a symmetry Doherty power amplification circuit apparatus and a power amplifier. The symmetry Doherty power amplifier comprises a main power amplification channel and one or more auxiliary power amplification channel. The Doherty power amplifier further comprises: a network with reactance varying with power that is disposed on the auxiliary power amplification channel; and an additional phase-shifting network that is disposed on the main power amplification channel, a first phase being a phase difference between an input signal received by an input end of the main power amplification channel and an input signal received by an input end of the auxiliary power amplification channel, and a second phase being a phase difference between an output signal outputted by an output end of the main power amplification channel and an output signal outputted by an output end of the auxiliary power amplification channel. In this way, the problem that a symmetry Doherty power amplification circuit cannot meet a relatively high peak-to-average ratio requirement is resolved.
Inventors:
YU MINDE (CN)
SHU FENG (CN)
DUAN BIN (CN)
SHU FENG (CN)
DUAN BIN (CN)
Application Number:
PCT/CN2016/082085
Publication Date:
February 23, 2017
Filing Date:
May 13, 2016
Export Citation:
Assignee:
ZTE CORP (CN)
International Classes:
H03F1/07
Domestic Patent References:
| WO2013015778A1 | 2013-01-31 |
Foreign References:
| JP2006148523A | 2006-06-08 | |||
| CN101351961A | 2009-01-21 |
Attorney, Agent or Firm:
AFD CHINA INTELLECTUAL PROPERTY LAW OFFICE (CN)
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