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Three-port micro-strip power divider with arbitrary power division ratio and phase position output characteristics

A technology of microstrip power divider and output port, which is applied in the direction of waveguide devices, electrical components, connecting devices, etc., and can solve problems such as failure to realize circuit miniaturization, difficulty in meeting miniaturization requirements, and high characteristic impedance transmission lines

Inactive Publication Date: 2013-11-13
UNIV OF ELECTRONICS SCI & TECH OF CHINA
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  • Application Information

AI Technical Summary

Problems solved by technology

Due to the loading of multiple stubs, the circuit size is large and it is difficult to meet the miniaturization requirements
[0006] At present, the methods to achieve high power division ratio mainly include periodic loading, double transmission line structure, defect ground structure, multi-layer technology, etc., but these methods still require transmission lines with high characteristic impedance, and at the same time do not realize the miniaturization of the circuit

Method used

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  • Three-port micro-strip power divider with arbitrary power division ratio and phase position output characteristics
  • Three-port micro-strip power divider with arbitrary power division ratio and phase position output characteristics
  • Three-port micro-strip power divider with arbitrary power division ratio and phase position output characteristics

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Embodiment Construction

[0046] The present invention will be described in further detail below in conjunction with the accompanying drawings and embodiments: the protection scope of the present invention includes but not limited to the following embodiments.

[0047] In this embodiment, the microstrip line is used as the transmission line, the thickness of the dielectric substrate used is 0.7874mm, the relative permittivity is 2.33, the working center frequency is 1GHz, and the output power division ratio of the first output port B and the second output port C is 1 :k 2 =1:9. In this embodiment, m 1 、m 2 、m 3 、m 4 , α, θ 2 , θ 4 , θ 5 , θ 7 The values ​​are as follows: m 1 =m 2 =m 3 =m 4 =1.6, α=0.3, θ 2 =0, θ 4 =0, θ 5 =0, θ 8 =0,Z 0 =50Ω. The actual structure of the 1:9 unequal power divider provided by the present embodiment can be obtained according to the calculation formula proposed in the summary of the present invention, such as figure 2 Shown:

[0048] 1 is the input por...

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Abstract

The invention discloses a three-port micro-strip power divider with arbitrary power division ratio and phase position output characteristics, and relates to the technical field of microwave. The micro-strip power divider is provided with an input port, a first output port and a second output port, and comprises eight transmission lines; a lumped element is connected in series with the transmission line between the input port and the first output port; a lumped element is connected in parallel with the transmission line between the input port and the second output port; the transmission line between the input port and the first output port and the transmission line between the input port and the second output port are isolated from each other through an isolating element. Through the arrangement of the appropriate lumped elements on the transmission lines, the characteristic impedance of the transmission lines can be designed flexibly, so that the arbitrary power division ratio and the phase position output characteristics of the two output ports are achieved, the difficult problem of the construction of the power divider with large power division ratio is solved, and in addition, the high isolation between the small circuit and the output ports is achieved. The three-port micro-strip power divider can be used in an antenna feed network and other functional circuit modules in a radio frequency communication system.

Description

technical field [0001] The invention relates to the technical field of wireless communication, in particular to a high-isolation three-port microstrip power divider with arbitrary power division ratio and phase output characteristics. Background technique [0002] As one of the indispensable key components in modern communication systems, power splitters are widely used in circuit modules such as antenna feed networks, power combiners, and mixers. In 1960, Wilkinson proposed a structure capable of equal-amplitude and same-phase power distribution. The principle of this structure is clear, the design parameters are simple and clear, and the isolation between output ports is high. It is widely used in microwave circuits. In recent years, with the continuous development of wireless communication systems, there are more and more functional requirements for power splitters, and higher and higher performance requirements, and unequal power splitters with high power ratio output ha...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01P5/16
Inventor 李家林张一明肖绍球王秉中
Owner UNIV OF ELECTRONICS SCI & TECH OF CHINA
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