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High-efficiency three-way Doherty power amplifier based on power dividing ratio and phase adjustable bridge

A technology of power amplifier and power division ratio, applied in the direction of improving amplifier to improve efficiency, etc., can solve the problems of low power amplifier, difficulty, complex linearity, etc., and achieve the effect of improving efficiency, maintaining linearity, and improving the fallback range.

Pending Publication Date: 2020-09-18
重庆嘉旦微电子有限公司
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AI Technical Summary

Problems solved by technology

[0002] With the development and continuous improvement of wireless communication, the entire wireless system has higher and higher requirements for energy consumption, so the efficiency of the power amplifier is becoming more and more important. In order to obtain higher efficiency, LINC power amplifier circuit structure and ET technology are usually used , EER technology and Doherty (Doherty) power amplifier and other methods, the first three will lead to low linearity or complex structure of the power amplifier
In the Doherty power amplifier scheme, it is more difficult to obtain high efficiency and good linearity at the same time

Method used

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  • High-efficiency three-way Doherty power amplifier based on power dividing ratio and phase adjustable bridge
  • High-efficiency three-way Doherty power amplifier based on power dividing ratio and phase adjustable bridge

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Embodiment Construction

[0019] Embodiments of the present invention are described below through specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and various modifications or changes can be made to the details in this specification based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the diagrams provided in the following embodiments are only schematically illustrating the basic concept of the present invention, and the following embodiments and the features in the embodiments can be combined with each other in the case of no conflict.

[0020] Wherein, the accompanying drawings are for illustrative purposes only, and represent only schematic diagrams, rather than physical drawings, and should not be c...

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Abstract

The invention relates to a high-efficiency three-way Doherty power amplifier based on a power division ratio and a phase adjustable bridge, which belongs to the field of microwave circuits, and comprises a main power amplifier module (1), an auxiliary power amplifier module (2), an unequal power division module (3), a phase power division adjustable bridge (4) and a phase shift module (5), the main power amplifier module 1 comprises a first main power amplifier and a second main power amplifier which are connected in parallel. The output end of the unequal power division module is connected with the first main power amplifier and the input end of the phase power division adjustable bridge (4). The output end of the phase power division adjustable bridge (4) is respectively connected with the input ends of the second main power amplifier and the auxiliary power amplifier; and the output ends of the first main power amplifier and the second main power amplifier are compensated by the phase shift module (5) and then are combined with the output end of the auxiliary module (2) to form a total output end.

Description

technical field [0001] The invention belongs to the field of microwave circuits, and relates to a high-efficiency three-way Doherty power amplifier based on a power division ratio and an adjustable phase bridge. Background technique [0002] With the development and continuous improvement of wireless communication, the entire wireless system has higher and higher requirements for energy consumption, so the efficiency of the power amplifier is becoming more and more important. In order to obtain higher efficiency, LINC power amplifier circuit structure and ET technology are usually used , EER technology and Doherty (Doherty) power amplifier and other methods, the first three will lead to lower linearity or complex structure of the power amplifier. However, in the Doherty power amplifier solution, it is more difficult to obtain higher efficiency and better linearity at the same time. [0003] At present, in order to improve the efficiency and linearity of the Doherty power am...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H03F1/07
CPCH03F1/07
Inventor 赵世巍陈云管俊
Owner 重庆嘉旦微电子有限公司
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