Power divider, electronic device, radio frequency front-end device and power dividing method

Abstract

The invention relates to the field of communication, in particular to a power divider, an electronic device, a radio frequency front-end device and a power dividing method. The power divider comprises an input port (P1), a first output port (P2) and a second output port (P3), wherein at least two segments of which the characteristic impedances decrease in sequence are connected in series between the input port (P1) and the first and second output ports (P2, P3); each segment comprises transmission lines which are connected in parallel; each parallel transmission line in every segment is connected through a concentrated resistor at the tail end of each segment which is positioned on one side of the first output port (P2) and one side of the second output port (P3); and the resistance of each concentrated resistor increases in sequence from the input port (P1) to the first and second output ports (P2,P3). Due to the adoption of the power divider, the electronic device, the radio frequency device and the power dividing method, ultra-wideband equal power dividing can be realized in a planar circuit mode.

Description

technical field [0001] The invention belongs to the technical field of communication, and in particular relates to a power distributor, an electronic device, a radio frequency front-end device and a power distribution method. Background technique [0002] Power dividers have important applications in high-gain antenna arrays, high-efficiency Doherty power amplifiers, and broadband balanced amplifiers. In actual radio frequency circuits or systems, the original single-section Wilkinson power divider has certain limitations in operating bandwidth and cannot meet the requirements of 3.1-10.6GHz ultra-wideband (UWB) systems. [0003] In order to solve such problems, in 2007, Dr. Abbosh of Australia proposed the design of an ultra-wideband power divider using a multi-layer coupled line structure, but its structure is complex, and it is difficult to design and manufacture. cost barrier. In 2010, Dr. Song and Dr. Xue from Hong Kong proposed to use multi-layer slot lines to realiz...

AI Technical Summary

Problems solved by technology

In the actual radio frequency circuit or system, the original single-section Wilkinson power divider has certain limitations in the working bandwidth and cannot meet the requirements of the 3.1-10.6GHz ultra-wideband (UWB) system

[0003] In order to solve such problems, in 2007, Dr. Abbosh of Australia proposed the design of an ultra-wideband power divider using a multi-layer coupled line structure, but its structure is complex, and it is difficult to design and manufacture. cost barrier

In 2010, Dr. Song and Dr. Xue from Hong Kong proposed to use multi-layer slot lines to realize ultra-wideband power dividers. The structure is still complicated, requiring three-layer circuits, via holes, R is the isolation resistance, and has a strong dependence on physical size. Therefore, the production cost of the power divider is increased, the actual product yield is reduced, and the production conditions are harsh, the design, production and debugging are difficult, and it is not easy to integrate with the single-layer microstrip line subsystem

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