Power division filtering network with arbitrary phase difference output

Abstract

The invention relates to a power division filtering network with arbitrary phase difference output. The power division filtering network comprises a filtering power division device and a broadband branch line bridge, wherein the filtering power dividing device comprises an input port, a first resonator, a second resonator and a third resonator; the input port is connected with the first resonator,and the second resonator and the third resonator are respectively connected with the first resonator through a variable capacitance circuit; signals output by the second resonator and the third resonator are respectively connected to two input ports of the broadband branch line bridge; signals are output after being synthesized through the broadband branch line bridge, the resonators are coupledthrough the variable capacitance circuits, in-phase and anti-phase signals with different power division ratios are output from input signals through cooperation of the three resonators and the two variable capacitance circuits, output signals are synthesized through the broadband branch line bridge, coupling between the two resonators is controlled by controlling capacitance values in the multiple variable capacitance circuits, and finally signals with the controllable difference are output.

Description

technical field [0001] 本发明涉及无线通信技术领域,具体涉及一种任意相差输出的功分滤波网络。 Background technique [0002] 随着现代无线通信技术的快速发展,滤波器,功分器与移相器在无线通信领域大量普及,成为无线通信领域中不可缺少的部分。为了进一步减小整个通信系统的体积以及减少能量损耗,具有相差控制功能的滤波功分电路成为研究的热点以及难点。 [0003] 现有技术中相差可控的功分网络过多依赖变容二极管的容值变化控制相差,相差变化范围受到变容二极管容值的限制,相差变为范围不大,难以满足现代通信系统尤其是5G通信波束形成网络中信号相位的要求。此外,目前还没有集滤波器,功分器,移相器一体的电路,级联额外的滤波电路需要额外成本 Contents of the invention [0004] 本发明针对现有技术的不足,提出一种任意相差输出的功分滤波网络,包括:滤波功分装置和宽带分支线电桥; [0005] 所述滤波功分装置包括输入端口、第一谐振器、第二谐振器和第三谐振器,所述输入端口与所述第一谐振器连接,所述第二谐振器和第三谐振器分别通过一个变容电路与第一谐振器连接; [0006] 所述第二谐振器和第三谐振器输出的信号分别连接至所述宽带分支线电桥的两个输入端口; [0007] 通过所述宽带分支线电桥将信号合成后输出。 [0008] 进一步,所述变容电路包括变容元件和第一贴片电阻,所述变容元件包括两个共阴极的二极管。 [0009] 进一步,所述二极管阳极与谐振器连接,所述第一贴片电阻一端连接在所述二极管阴极,所述第一贴片电阻另一端外接偏置电压。 [0010] 进一步,还包括三个分别与所述第一谐振器、第二谐振器、第三谐振器连接的中心频率调节电路对输入信号的中心频率进行调节。 [0011] 进一步,所述中心频率调节电路包括两个共阴极的第一二极管、第二二极管和第二贴片电阻,所述第二贴片电阻一端连接在所述第一二极管和第二二极管阴极,所述第二贴片电阻另一端外接偏置电压。 [0012] 进一步,所述第一二极管阳极接地,所述第二二极管阳极与谐振器连接。 [0013] 进一步,所述宽带分支线电桥为二阶90°分支线电桥。 [0014] 进一步,还包括信号...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the power division network with controllable phase difference relies too much on the capacitance change of varactor diodes to control the phase difference. Signal Phase Requirements in 5G Communication Beamforming Networks

In addition, there is no integrated circuit with filters, power dividers, and phase shifters at present, and cascading additional filter circuits requires additional costs

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