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A structure design method of power distribution circuit of broadband phase shifter

A power distribution circuit and structural design technology, applied in CAD circuit design, computer-aided design, instruments, etc., can solve the problem of antenna gain, beam pointing upper side lobe suppression, phase shifter return loss (high VSWR, Design problems such as large circuit size to achieve the effect of improving design efficiency, avoiding blindness, and improving efficiency

Active Publication Date: 2021-08-31
ZHONGTIAN BROADBAND TECH +1
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AI Technical Summary

Problems solved by technology

The design efficiency is low, and the design circuit size is often too large, which will lead to high return loss (SWR) of the phase shifter, which will affect key indicators such as antenna gain, beam pointing, and upper sidelobe suppression.

Method used

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  • A structure design method of power distribution circuit of broadband phase shifter
  • A structure design method of power distribution circuit of broadband phase shifter

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Embodiment Construction

[0026] Refer to attached Figure 1~2 , a method for designing a broadband phase shifter power distribution circuit structure, comprising the steps of:

[0027] 1) Determine the initial input port impedance Z_in and output port Z_out_i of the power distribution circuit according to the power distribution ratio of the phase shifter power distribution circuit, the characteristic impedance Z_in_c of the transmission line connected to the input port, and the characteristic impedance Z_out_c_i of the transmission line connected to the output port i (where i is an integer variable whose value is less than or equal to the number of output ports n);

[0028] Specifically include,

[0029] 1-1) The ratio of Z_in_c to Z_in and the ratio of Z_out_c_i to Z_out_i are required to belong to the interval [1 / m,m], where the value of m depends on the bandwidth, and the value range of m is (1, 2];

[0030] 1-2) Determine Z_in and Z_out_i

[0031] According to the power distribution ratio, the ...

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Abstract

The invention relates to a microwave radio frequency circuit design method, in particular to a broadband phase shifter power distribution circuit structure design method applicable to the broadband feed network and phase shifter circuit structure design of mobile communication antennas. Including determining the initial input port impedance Z_in and output port Z_out_ of the power distribution circuit i ; Optimize the impedance Z_in_m, Z_out_m_ of the impedance transformation section within the working frequency range i And electrical length L_in_m, L_out_m_ i , where Z_in_m and L_in_m are the impedance and electrical length of the impedance transformation section between Z_in_c and Z_in respectively; the corresponding three-dimensional model of the simulation result circuit in the circuit simulation software is established in the full-wave simulation software, which affects the characteristic impedance and the three-dimensional model. The parameters of the electrical length are scanned to obtain the corresponding three-dimensional model parameter set; as the initial value of the three-dimensional model parameters; through the optimization of the full-wave simulation software, the final parameter size of the three-dimensional model of the power division circuit is obtained.

Description

technical field [0001] The invention relates to a microwave radio frequency circuit design method, in particular to a broadband phase shifter power distribution circuit structure design method applicable to the broadband feed network and phase shifter circuit structure design of mobile communication antennas. Background technique [0002] The phase shifter is the core component of the mobile communication antenna to realize the dynamic adjustment of the beam pointing in the vertical direction, and its performance largely affects key indicators such as the antenna gain, beam pointing, and upper sidelobe suppression. The design of the power distribution circuit in the phase shifter is one of the key technologies to realize the broadband of the phase shifter, which greatly affects the design efficiency of the phase shifter, the size and performance parameters of the phase shifter. [0003] In the existing phase shifter design literature, no detailed power distribution circuit s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F30/367G06F30/373G06F111/06
CPCG06F30/30G06F30/367Y02E60/00
Inventor 丁建军徐翠王学仁郑朝义顾晓凤袁宏伟
Owner ZHONGTIAN BROADBAND TECH
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