Title:
HIGH-EFFICIENCY BROADBAND MULTI-MODE DOHERTY AMPLIFIER AND CONSTRUCTION METHOD
Document Type and Number:
WIPO Patent Application WO/2023/000693
Kind Code:
A1
Abstract:
Provided in the present invention are a high-efficiency broadband multi-mode Doherty amplifier and a construction method. The Doherty amplifier comprises a broadband power divider, a phase shifter, a carrier amplifier, a peaking amplifier, a peak compensation line, and a step impedance combiner. The carrier amplifier comprises a carrier input matching network, a carrier transistor, and a broadband multi-mode matching network connected in sequence. The peaking amplifier comprises a peak input matching network, a peak transistor, and a broadband single-mode matching network connected in sequence. The broadband power divider receives input power and is separately connected to the phase shifter and the peak input matching network. The phase shifter is connected to the carrier input matching network. The broadband single-mode matching network is connected to the peak compensation line. The step impedance combiner is separately connected to the broadband multi-mode matching network and the peak compensation line for power output. The present invention can overcome the problem of limited bandwidth caused by a quarter-wave line, thereby ensuring stability of a combined output.
Inventors:
WANG HONG (CN)
XIONG ZHENTING (CN)
XIONG ZHENTING (CN)
Application Number:
PCT/CN2022/081264
Publication Date:
January 26, 2023
Filing Date:
March 16, 2022
Export Citation:
Assignee:
UNIV SOUTH CHINA TECH (CN)
International Classes:
H03F1/02; H03F1/56; H03F3/195; H03F3/21; H03F3/213
Foreign References:
| CN113746433A | 2021-12-03 | |||
| CN110266275A | 2019-09-20 | |||
| CN110311640A | 2019-10-08 | |||
| CN111404490A | 2020-07-10 |
Other References:
GAN DECHENG; SHI WEIMIN: "Design of a Broadband Doherty Power Amplifier Based on Hybrid Continuous Mode", IEEE ACCESS, vol. 7, 1 July 2019 (2019-07-01), USA , pages 86194 - 86204, XP011734357, DOI: 10.1109/ACCESS.2019.2925958
Attorney, Agent or Firm:
YOGO PATENT & TRADEMARK AGENCY LIMITED COMPANY (CN)
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