CN116387788B - A three-mode composite network with one point and four power points - Google Patents
A three-mode composite network with one point and four power points Download PDFInfo
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- H01P5/12—Coupling devices having more than two ports
- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
- H01P5/18—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers
- H01P5/184—Conjugate devices, i.e. devices having at least one port decoupled from one other port consisting of two coupled guides, e.g. directional couplers the guides being strip lines or microstrips
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- H—ELECTRICITY
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- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P5/00—Coupling devices of the waveguide type
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- H01P5/16—Conjugate devices, i.e. devices having at least one port decoupled from one other port
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Abstract
本发明属于微波器件技术领域,具体提供一种三模复合的一分四功分网络,用以在保证器件易于集成的同时实现具有低损耗特性的三模复合一分四功分传输。本发明包括:沿z轴方向依次层叠设置的下层金属层、下介质基板层、金属地板层、上介质基板层与上层金属层,上层金属层、金属地板层与下层金属层通过金属短路柱相连,共同构成复合波导传输线结构;在复合波导传输线结构的金属地板上开设缝隙,使其具有标准TE10模式、折叠同相TE10模式和折叠反相TE10模式三种传输模式,且实现良好的模式隔离度,实现三模复合;同时,在复合波导传输线末端开设T型缝隙并插入微带线,设计得到复合波导转四路微带线的结构,实现一分四功分功能。
The invention belongs to the technical field of microwave devices, and specifically provides a three-mode composite one-point four-power distribution network, which is used to realize three-mode composite one-point four power distribution transmission with low loss characteristics while ensuring easy integration of devices. The present invention comprises: a lower metal layer, a lower dielectric substrate layer, a metal floor layer, an upper dielectric substrate layer and an upper metal layer stacked in sequence along the z-axis direction, and the upper metal layer, the metal floor layer and the lower metal layer are connected through metal short-circuit columns , together constitute a composite waveguide transmission line structure; slots are opened on the metal floor of the composite waveguide transmission line structure, so that it has three transmission modes: standard TE 10 mode, folded in-phase TE 10 mode and folded anti-phase TE 10 mode, and achieves a good mode Isolation, to achieve three-mode composite; at the same time, a T-shaped slot is opened at the end of the composite waveguide transmission line and inserted into the microstrip line, and the structure of the composite waveguide to four-way microstrip line is designed to realize the function of one point and four power points.
Description
技术领域technical field
本发明属于微波器件技术领域,具体提供一种三模复合的一分四功分网络。The invention belongs to the technical field of microwave devices, and specifically provides a three-mode composite one-point four-power distribution network.
背景技术Background technique
功分器作为重要的多端口器件之一,其主要功能是将一路输入信号功率按照特定比例分为两路或多路同相、反相或者正交信号输出;该器件作为重要的微波毫米波器件之一,被广泛应用于无线收发系统的各个部分。例如,在相控阵雷达系统中,功分器作为阵列天线的馈电系统,可将同一个馈源分为多路输出信号分别对不同的天线辐射单元提供激励;在高功率发射系统中,通常会两次用到功分器,首先通过功分器将输入信号分为多路然后分别放大,再由反相功分器将多路信号叠加,合成为一路大功率信号输出;除此之外,功分器还常用于混频器、移相器、反射计等器件中。As one of the important multi-port devices, the main function of the power divider is to divide one input signal power into two or more in-phase, inverting or quadrature signal outputs according to a specific ratio; this device is an important microwave and millimeter-wave device One of them is widely used in various parts of the wireless transceiver system. For example, in a phased array radar system, the power divider is used as the feed system of the array antenna, which can divide the same feed source into multiple output signals to provide excitation for different antenna radiation units; in a high-power transmission system, Usually, the power divider is used twice. First, the input signal is divided into multiple channels through the power divider and then amplified separately, and then the multi-channel signals are superimposed by the inverting power divider to synthesize a high-power signal output; otherwise In addition, power splitters are often used in mixers, phase shifters, reflectometers and other devices.
作为无线系统中重要的无源器件,功分器的性能对整个系统性能影响较大。为了适应雷达、导航、卫星通信、电子对抗、5G 等军用和民用领域无线通信行业的快速发展,多模多路功分器成为广泛研究的重点;多模多路功分器不仅可以减少功分器的使用数量,从而减少空间和成本,还可以实现好的端口隔离;因此,多模多路功分器具有重要的研究意义。As an important passive device in a wireless system, the performance of a power splitter has a great influence on the performance of the entire system. In order to adapt to the rapid development of wireless communication industries in military and civil fields such as radar, navigation, satellite communication, electronic countermeasures, and 5G, multi-mode multi-channel power splitters have become the focus of extensive research; multi-mode multi-channel power splitters can not only reduce power The number of devices used can reduce space and cost, and can also achieve good port isolation; therefore, multi-mode multi-channel power splitters have important research significance.
发明内容Contents of the invention
本发明的目的在于提供一种三模复合的一分四功分网络,利用简单的基片集成波导(Substrate integrated waveguide,SIW)结构,在保证器件易于集成的同时,实现具有低损耗特性的三模复合一分四功分传输。The purpose of the present invention is to provide a three-mode composite one-point four-power distribution network, which uses a simple substrate integrated waveguide (Substrate integrated waveguide, SIW) structure, while ensuring that the device is easy to integrate, and realizes three-mode power distribution with low loss characteristics. Modular composite one-point four-power transmission.
为实现上述发明目的,本发明采用的技术方案为:For realizing above-mentioned purpose of the invention, the technical scheme that the present invention adopts is:
一种三模复合的一分四功分网络,包括:沿z轴方向依次层叠设置的下层金属层、下介质基板层7、金属地板层6、上介质基板层5与上层金属层;其特征在于:A three-mode composite one-point four-power distribution network, including: a lower metal layer, a lower dielectric substrate layer 7, a metal floor layer 6, an upper dielectric substrate layer 5, and an upper metal layer sequentially stacked along the z-axis direction; its characteristics in:
所述上层金属层关于上介质基板层上表面y轴方向中线呈对称结构,所述下层金属层关于下介质基板层下表面y轴方向中线呈对称结构,上层金属层由第一上层微带线1、第二上层微带线2与复合波导上金属层3构成,下层金属层由第一下层微带线8、第二下层微带线9与复合波导下金属层10构成;The upper metal layer has a symmetrical structure with respect to the midline of the y-axis direction on the upper surface of the upper dielectric substrate layer, and the lower metal layer has a symmetrical structure with respect to the midline of the y-axis direction of the lower surface of the lower dielectric substrate layer. The upper metal layer is formed by the first upper microstrip line 1. The second upper layer microstrip line 2 is composed of the composite waveguide upper metal layer 3, and the lower layer metal layer is composed of the first lower layer microstrip line 8, the second lower layer microstrip line 9 and the composite waveguide lower metal layer 10;
所述复合波导上金属层3、金属地板层6与复合波导下金属层10通过金属短路柱4相连,金属短路柱4贯穿上介质基板层5与下介质基板层7,共同构成复合波导传输线结构;The upper metal layer 3 of the composite waveguide, the metal floor layer 6 and the lower metal layer 10 of the composite waveguide are connected through the metal short-circuit column 4, and the metal short-circuit column 4 penetrates the upper dielectric substrate layer 5 and the lower dielectric substrate layer 7 to jointly form a composite waveguide transmission line structure ;
复合波导传输线始端作为输入端口P0;复合波导传输线末端的复合波导上金属层3与复合波导下金属层10分别沿其y轴方向中线对称设置两个T型缝隙,第一上层微带线1与第二上层微带线2分别通过T型缝隙连接于复合波导上金属层3两侧,第一下层微带线8与第二下层微带线9分别通过T型缝隙连接于复合波导下金属层10两侧,所述第一上层微带线1与第二上层微带线2、第一下层微带线8与第二下层微带线9均采用阶梯形折线结构;第一上层微带线1、第二上层微带线2、第一下层微带线8与第二下层微带线9依次连接输出端口P1~P4,且同侧输出端口交错排布;The beginning of the composite waveguide transmission line is used as the input port P0; the composite waveguide upper metal layer 3 and the composite waveguide lower metal layer 10 at the end of the composite waveguide transmission line are respectively provided with two T-shaped slots symmetrically along the center line of the y-axis direction, and the first upper layer microstrip line 1 and The second upper microstrip line 2 is respectively connected to both sides of the upper metal layer 3 of the composite waveguide through a T-shaped gap, and the first lower layer microstrip line 8 and the second lower layer microstrip line 9 are respectively connected to the lower metal layer of the composite waveguide through a T-shaped gap. On both sides of the layer 10, the first upper layer microstrip line 1 and the second upper layer microstrip line 2, the first lower layer microstrip line 8 and the second lower layer microstrip line 9 all adopt a ladder-shaped broken line structure; the first upper layer microstrip line The stripline 1, the second upper layer microstrip line 2, the first lower layer microstrip line 8 and the second lower layer microstrip line 9 are sequentially connected to the output ports P1~P4, and the output ports on the same side are arranged alternately;
所述金属地板层6沿y轴方向开设有一条矩形缝隙、且位于复合波导传输线结构的中线上。The metal floor layer 6 is provided with a rectangular slit along the y-axis direction, and is located on the center line of the composite waveguide transmission line structure.
进一步的,复合波导传输线结构具有三种传输模式,分别为标准TE10模式、折叠同相TE10模式和折叠反相TE10模式;其中,标准TE10模式下,输出端口P1和P2输出同相场,输出端口P3和P4输出同相场,输出端口P1与P3输出反相场;折叠反相TE10模式下,输出端口P1和P3输出同相场,输出端口P2和P4输出同相场,输出端口P1与P2输出反相场;折叠同相TE10模式下,输出端口P1、P2、P3与P4全部输出同相场。Further, the composite waveguide transmission line structure has three transmission modes, which are standard TE 10 mode, folded in-phase TE 10 mode and folded anti-phase TE 10 mode; among them, in the standard TE 10 mode, the output ports P1 and P2 output the same phase field, Output ports P3 and P4 output in-phase field, output ports P1 and P3 output inverse field; in folded inversion TE 10 mode, output ports P1 and P3 output in-phase field, output ports P2 and P4 output in-phase field, output ports P1 and P2 Output out-phase field; in folded in-phase TE 10 mode, output ports P1, P2, P3 and P4 all output in-phase field.
进一步的,复合波导上金属层3和复合波导下金属层10的长度均为L=23.1mm,宽度均为W=11.2mm。Further, the length of the upper metal layer 3 of the composite waveguide and the lower metal layer 10 of the composite waveguide are both L=23.1 mm in length and W=11.2 mm in width.
进一步的,复合波导上金属层3和复合波导下金属层10中T型缝隙的外臂距中线的距离为d1=1.96mm,T型缝隙的臂长为b=5.25mm、臂深为a=3.7mm、臂宽为s=0.45mm。Further, the distance from the outer arm of the T-shaped slot in the composite waveguide upper metal layer 3 and the composite waveguide lower metal layer 10 to the center line is d1=1.96mm, the arm length of the T-shaped slot is b=5.25mm, and the arm depth is a= 3.7mm, arm width s=0.45mm.
进一步的,上介质基板层5和下介质基板层7的厚度均为h=0.508mm。Further, the thicknesses of the upper dielectric substrate layer 5 and the lower dielectric substrate layer 7 are both h=0.508mm.
进一步的,金属短路柱4的直径为d=0.48mm,相邻金属短路柱之间的距离为d2=0.72mm。Further, the diameter of the metal short-circuit post 4 is d=0.48mm, and the distance between adjacent metal short-circuit posts is d2=0.72mm.
进一步的,金属地板层6的矩形缝隙宽度为Wm=1mm,长度为Lm=15.9mm。Further, the width of the rectangular gap of the metal floor layer 6 is Wm=1mm, and the length is Lm=15.9mm.
从工作原理上讲:In terms of working principle:
本发明提供一种三模复合的一分四功分网络,基于基片集成波导结构设计得到复合波导传输线,当在复合波导传输线的金属地板上开设缝隙时,复合波导传输线除了传输标准TE10模式外,还增加了两个传输模式,分别为折叠同相TE10模式和折叠反相TE10模式;由于后两种模式都属于标准TE10模式的变形,因此三种传输模式具有相近的截止频率,使得该复合波导可以传输同时传输三种相同频率的模式;又由于三种模式相互正交,可实现良好的模式隔离度,则保证了它们能够同时工作,即实现三模复合。进一步的,在复合波导传输线末端开设缝隙并插入微带线,设计得到复合波导转四路微带线的结构,即实现一分四功分效果;由于三种模式的场分布不同,使得不同模式下单模输出端口(P1、P2、P3和P4)相位具有差异:标准TE10模式下,P1和P2输出同相场,P3和P4输出同相场,但是P1、P2与P3、P4输出反相场;折叠反相TE10模式下,P1和P3输出同相场,P2和P4输出同相场,但是P1、P3与P2、P4输出反相场;折叠同相TE10模式下,P1、P2、P3和P4全部输出同相场。The invention provides a three-mode composite one-point-four-power distribution network. Based on the design of the substrate integrated waveguide structure, the composite waveguide transmission line is obtained. In addition, two transmission modes are added, which are the folded in-phase TE 10 mode and the folded anti-phase TE 10 mode; since the latter two modes belong to the deformation of the standard TE 10 mode, the three transmission modes have similar cut-off frequencies, This enables the composite waveguide to transmit three modes of the same frequency at the same time; and since the three modes are mutually orthogonal, good mode isolation can be achieved, which ensures that they can work simultaneously, that is, three-mode composite is realized. Furthermore, a slot is opened at the end of the composite waveguide transmission line and a microstrip line is inserted to design a structure in which the composite waveguide is transferred to a four-way microstrip line, that is, to realize the effect of one point and four power points; due to the different field distributions of the three modes, different modes The phases of the lower single-mode output ports (P1, P2, P3, and P4) are different: in the standard TE 10 mode, P1 and P2 output the same-phase field, P3 and P4 output the same-phase field, but P1, P2 and P3, P4 output the opposite-phase field ;In folded reverse phase TE 10 mode, P1 and P3 output in-phase field, P2 and P4 output in-phase field, but P1, P3 and P2, P4 output out-phase field; in folded in-phase TE 10 mode, P1, P2, P3 and P4 output All output in-phase field.
综上,本发明的有益效果在于:提供了一种结构简单的三模复合的一分四功分网络,传输的三种模式不仅能够同时工作,还能够使得四个输出端口具有不同的输出相位,当该功分网络被用于激励天线结构时,有助于实现天线辐射性能多样性。To sum up, the beneficial effect of the present invention is that it provides a three-mode composite one-point four-power distribution network with a simple structure, and the three modes of transmission can not only work simultaneously, but also enable the four output ports to have different output phases , when the power division network is used to excite the antenna structure, it is helpful to realize the diversity of antenna radiation performance.
附图说明Description of drawings
图1为本发明中三模复合的一分四功分网络的三维结构示意图,其中,1、2为第一、第二上层微带线,3为复合波导上金属层,4为金属短路柱,5为上介质基板层,6为金属地板层,7为下介质基板层,8、9为第一、第二下层微带线,10为复合波导下金属层;P0为输入端口,P1~P4为输出端口。Fig. 1 is the three-dimensional structural schematic diagram of the one-point four-power distribution network of three-mode composite in the present invention, wherein, 1, 2 are the first and second upper layer microstrip lines, 3 is the metal layer on the composite waveguide, and 4 is the metal short-circuit column , 5 is the upper dielectric substrate layer, 6 is the metal floor layer, 7 is the lower dielectric substrate layer, 8 and 9 are the first and second lower microstrip lines, 10 is the lower metal layer of the composite waveguide; P0 is the input port, P1~ P4 is the output port.
图2为本发明中三模复合的一分四功分网络的俯视结构示意图。Fig. 2 is a top view structural schematic diagram of a three-mode composite one-point four-power distribution network in the present invention.
图3为本发明中三模复合的一分四功分网络中金属地板层的结构示意图。Fig. 3 is a structural schematic diagram of the metal floor layer in the one-point four-power distribution network of the three-mode composite in the present invention.
图4为实施例中三模复合的一分四功分网络在三种模式下P0端口的VSWR曲线。Fig. 4 is the VSWR curve of the P0 port in the three modes of the three-mode composite one-point four-power distribution network in the embodiment.
图5为实施例中三模复合的一分四功分网络在P0端口与其余端口的传输系数曲线。Fig. 5 is a transmission coefficient curve between the P0 port and other ports of the three-mode composite one-point four-power distribution network in the embodiment.
图6为实施例中三模复合的一分四功分网络的三个模式之间的耦合曲线。Fig. 6 is a coupling curve among three modes of a three-mode combined one-to-four power division network in the embodiment.
图7为实施例中三模复合的一分四功分网络在标准TE10模式的电场分布示意图。Fig. 7 is a schematic diagram of the electric field distribution in the standard TE 10 mode of the three-mode combined one-to-four power-divided network in the embodiment.
图8为实施例中三模复合的一分四功分网络在折叠同相TE10模式的电场分布示意图。Fig. 8 is a schematic diagram of the electric field distribution in the folded in-phase TE 10 mode of the three-mode combined one-to-four power-divided network in the embodiment.
图9为实施例中三模复合的一分四功分网络在折叠反相TE10模式的电场分布示意图。Fig. 9 is a schematic diagram of the electric field distribution in the folded anti-phase TE 10 mode of the three-mode combined one-to-four power-divided network in the embodiment.
图10为实施例中三模复合的一分四功分网络在标准TE10模式下S01/S02/S03/S04传输系数相位特性图。FIG. 10 is a phase characteristic diagram of S01/S02/S03/S04 transmission coefficients in the standard TE 10 mode of the three-mode composite one-point four-power distribution network in the embodiment.
图11为实施例中三模复合的一分四功分网络在折叠同相TE10模式下S01/S02/S03/S04传输系数相位特性图。Fig. 11 is a phase characteristic diagram of S01/S02/S03/S04 transmission coefficients in the folded in-phase TE 10 mode of the three-mode compound one-point four-power-division network in the embodiment.
图12为实施例中三模复合的一分四功分网络在折叠反相TE10模式下S01/S02/S03/S04传输系数相位特性图。Fig. 12 is a phase characteristic diagram of S01/S02/S03/S04 transmission coefficients in the folded and reversed-phase TE 10 mode of the three-mode combined one-to-four power-divided network in the embodiment.
具体实施方式Detailed ways
为使本发明的目的、技术方案与有益效果更加清楚明白,下面结合附图和实施例对本发明做进一步详细说明。In order to make the purpose, technical solutions and beneficial effects of the present invention more clear, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.
本实施例提供一种三模复合的一分四功分网络,其结构如图1~图3所示,包含输入端口P0与输出端口P1~P4,具体结构包括:沿z轴方向(从下往上)依次层叠设置的下层金属层、下介质基板层7、金属地板层6、上介质基板层5与上层金属层;具体而言:This embodiment provides a three-mode composite one-point four-power distribution network, the structure of which is shown in Figures 1 to 3, including input ports P0 and output ports P1 to P4, and the specific structure includes: along the z-axis direction (from below Up) the lower metal layer, the lower dielectric substrate layer 7, the metal floor layer 6, the upper dielectric substrate layer 5 and the upper metal layer are stacked in sequence; specifically:
所述下介质基板层7、金属地板层6与上介质基板层紧密连接,上介质基板层5与下介质基板层7之间无空气间隔;The lower dielectric substrate layer 7, the metal floor layer 6 are closely connected with the upper dielectric substrate layer, and there is no air gap between the upper dielectric substrate layer 5 and the lower dielectric substrate layer 7;
所述上层金属层设置于上介质基板层5上表面、且关于上介质基板层上表面y轴方向中线呈对称结构,所述下层金属层设置于下介质基板层7下表面、且关于下介质基板层下表面y轴方向中线呈对称结构,上层金属层由第一上层微带线1、第二上层微带线2与复合波导上金属层3构成,下层金属层由第一下层微带线8、第二下层微带线9与复合波导下金属层10构成;所述复合波导上金属层3、金属地板层6与复合波导下金属层10通过金属短路柱4相连,金属短路柱4横穿上介质基板层5与下介质基板层7,共同构成复合波导传输线结构;The upper metal layer is arranged on the upper surface of the upper dielectric substrate layer 5 and has a symmetrical structure with respect to the midline in the y-axis direction of the upper surface of the upper dielectric substrate layer. The lower metal layer is arranged on the lower surface of the lower dielectric substrate layer 7 and has a structure about The center line of the lower surface of the substrate layer in the y-axis direction has a symmetrical structure. The upper metal layer is composed of the first upper layer microstrip line 1, the second upper layer microstrip line 2 and the upper metal layer 3 of the composite waveguide. The lower metal layer is composed of the first lower layer microstrip line. line 8, the second lower microstrip line 9 and the composite waveguide lower metal layer 10; the composite waveguide upper metal layer 3, the metal floor layer 6 and the composite waveguide lower metal layer 10 are connected through the metal short-circuit column 4, and the metal short-circuit column 4 traverse the upper dielectric substrate layer 5 and the lower dielectric substrate layer 7 to jointly form a composite waveguide transmission line structure;
复合波导传输线始端作为输入端口P0;复合波导传输线末端的复合波导上金属层3与复合波导下金属层10分别沿其y轴方向中线对称设置两个T型缝隙,第一上层微带线1与第二上层微带线2分别通过T型缝隙连接于复合波导上金属层3两侧、即第一上层微带线1与第二上层微带线2沿x轴方向排布,第一下层微带线8与第二下层微带线9分别通过T型缝隙连接于复合波导下金属层10两侧、即第一下层微带线8与第二下层微带线9同样沿x轴方向排布,所述第一上层微带线1与第二上层微带线2、第一下层微带线8与第二下层微带线9均采用阶梯形折线结构;第一上层微带线1、第二上层微带线2、第一下层微带线8与第二下层微带线9分别连接输出端口P1~P4,且同侧输出端口交错排布;The beginning of the composite waveguide transmission line is used as the input port P0; the composite waveguide upper metal layer 3 and the composite waveguide lower metal layer 10 at the end of the composite waveguide transmission line are respectively provided with two T-shaped slots symmetrically along the center line of the y-axis direction, and the first upper layer microstrip line 1 and The second upper layer microstrip line 2 is respectively connected to both sides of the metal layer 3 on the composite waveguide through a T-shaped gap, that is, the first upper layer microstrip line 1 and the second upper layer microstrip line 2 are arranged along the x-axis direction, and the first lower layer The microstrip line 8 and the second lower layer microstrip line 9 are respectively connected to both sides of the composite waveguide lower metal layer 10 through T-shaped gaps, that is, the first lower layer microstrip line 8 and the second lower layer microstrip line 9 are also along the x-axis direction Arrangement, the first upper layer microstrip line 1 and the second upper layer microstrip line 2, the first lower layer microstrip line 8 and the second lower layer microstrip line 9 all adopt a ladder-shaped broken line structure; the first upper layer microstrip line 1. The second upper layer microstrip line 2, the first lower layer microstrip line 8 and the second lower layer microstrip line 9 are respectively connected to the output ports P1~P4, and the output ports on the same side are arranged alternately;
所述金属地板层6沿y轴方向开设有一条矩形缝隙、且位于复合波导传输线结构的中线上,该矩形缝隙使得复合波导传输线结构能够传输三种模式,分别为TE10模式、折叠同相TE10模式和折叠反相TE10模式;The metal floor layer 6 is provided with a rectangular slit along the y-axis direction and is located on the center line of the composite waveguide transmission line structure. The rectangular slit enables the composite waveguide transmission line structure to transmit three modes, namely TE 10 mode, folded in-phase TE 10 mode and folded inversion TE 10 mode;
所述输入端口P0是能量的输入端口,输出端口P1、P2、P3和P4为能量的输出端口;能量从输入端口P0进入后,在复合波导传输线结构中传输到后端T型结构处,然后通过上层微带线1、上层微带线2、下层微带线8和下层微带线9分别传输给输出端口P1、P2、P3和P4,构成一个一分四功分网络。The input port P0 is an energy input port, and the output ports P1, P2, P3, and P4 are energy output ports; after the energy enters from the input port P0, it is transmitted to the back-end T-shaped structure in the composite waveguide transmission line structure, and then The upper layer microstrip line 1, the upper layer microstrip line 2, the lower layer microstrip line 8 and the lower layer microstrip line 9 are respectively transmitted to the output ports P1, P2, P3 and P4 to form a one-point four-power distribution network.
具体的,本实施例中,上介质基板层5和下介质基板层7均采用介电常数为3.5的Taconic RF-35板,厚度h=0.508mm,长度为30mm,宽度为20mm;复合波导上金属层3和复合波导下金属层10的长度均为L=23.1mm,宽度均为W=11.2mm;复合波导上金属层3和复合波导下金属层10两侧的T型缝隙的外臂距中线的距离d1=1.96mm,T型缝隙的臂长b=5.25mm、臂深a=3.7mm、臂宽s=0.45mm;金属短路柱4的直径d=0.48mm,相邻两个金属短路柱之间的距离d2=0.72mm;金属地板层6中间的矩形缝隙宽度Wm=1mm,长度Lm=15.9mm。Specifically, in this embodiment, both the upper dielectric substrate layer 5 and the lower dielectric substrate layer 7 use a Taconic RF-35 board with a dielectric constant of 3.5, a thickness of h=0.508mm, a length of 30mm, and a width of 20mm; The length of the metal layer 3 and the metal layer 10 under the composite waveguide are both L=23.1mm, and the width is W=11.2mm; The distance of the center line d1=1.96mm, the arm length b=5.25mm, the arm depth a=3.7mm, the arm width s=0.45mm of the T-shaped gap; the diameter d=0.48mm of the metal short-circuit column 4, two adjacent metal short-circuit The distance between columns d2=0.72mm; the rectangular gap width Wm=1mm in the middle of the metal floor layer 6, and the length Lm=15.9mm.
基于上述结构参数,对本实施例中三模复合的一分四功分网络进行仿真测试,结果如下:Based on the above structural parameters, a simulation test is carried out on the three-mode composite one-point four-power distribution network in this embodiment, and the results are as follows:
如图4所示为本实施例中三模复合的一分四功分网络在三种模式下VSWR曲线,由图可见,三种传输模式的驻波系数都小于1.5的频段在15.6~20.5 GHz之间,表明模式具有很好的匹配;As shown in Figure 4, the VSWR curves of the three-mode composite one-point four-power distribution network in the present embodiment are in the three modes. It can be seen from the figure that the frequency bands in which the standing wave coefficients of the three transmission modes are all less than 1.5 are in the range of 15.6~20.5 GHz between, indicating that the pattern has a good match;
如图5所示为本实施例中三模复合的一分四功分网络在三种模式的传输系数曲线,如图6所示为本实施例中三模复合的一分四功分网络的三个模式之间的耦合(隔离度)曲线,由图可见,三种模式下一分四功分网络的传输系数均在6.25~6.75之间,损耗比较小,四个输出端口具有等功分特性;三个模式之间的隔离度超过40dB,表明模式之间具有很好的隔离特性;As shown in Figure 5, it is the transmission coefficient curve of the three-mode composite one-point four-power distribution network in the present embodiment, and as shown in Figure 6 is the one-point four-power distribution network of the three-mode composite in the present embodiment. The coupling (isolation) curves between the three modes can be seen from the figure. The transmission coefficients of the four-point power distribution network under the three modes are all between 6.25 and 6.75, and the loss is relatively small. The four output ports have equal power division. characteristics; the isolation between the three modes exceeds 40dB, indicating that the modes have good isolation characteristics;
如图7~图9所示为本实施例中三模复合的一分四功分网络在三种模式下的电场分布示意图,由图可见,标准TE10模式在端口平面内电场具有单向特点,折叠同相TE10模式在端口平面内电场具有左右和上下均反相特点,折叠反相TE10模式在端口平面内电场具有上下反相特点;Figures 7 to 9 are schematic diagrams of the electric field distribution in the three modes of the three-mode combined one-point-four-power-division network in this embodiment. It can be seen from the figure that the standard TE 10 mode has a unidirectional electric field in the port plane , the electric field in the folded in-phase TE 10 mode has the characteristics of anti-phase left and right and up and down in the port plane, and the electric field in the folded anti-phase TE 10 mode has the characteristics of anti-phase in the port plane;
如图10~图12所示为本实施例中三模复合的一分四功分网络在三种模式下输出端口相位图,由图可见,在标准TE10模式下,P1和P2输出同相场,P3和P4输出同相场,但是P1、P2与P3、P4输出反相场;折叠反相TE10模式下,P1和P3输出同相场,P2和P4输出同相场,但是P1、P3与P2、P4输出反相场;折叠同相TE10模式下,P1、P2、P3和P4全部输出同相场,没有相位差。As shown in Figures 10 to 12, the output port phase diagrams of the three-mode composite one-point four-power distribution network in this embodiment are shown in the three modes. It can be seen from the figure that in the standard TE 10 mode, P1 and P2 output the same phase field , P3 and P4 output the same-phase field, but P1, P2 and P3, P4 output the anti-phase field; in folded anti-phase TE 10 mode, P1 and P3 output the same-phase field, P2 and P4 output the same-phase field, but P1, P3 and P2, P4 outputs anti-phase field; in folded in-phase TE 10 mode, P1, P2, P3 and P4 all output in-phase field without phase difference.
以上所述,仅为本发明的具体实施方式,本说明书中所公开的任一特征,除非特别叙述,均可被其他等效或具有类似目的的替代特征加以替换;所公开的所有特征、或所有方法或过程中的步骤,除了互相排斥的特征和/或步骤以外,均可以任何方式组合。The above is only a specific embodiment of the present invention. Any feature disclosed in this specification, unless specifically stated, can be replaced by other equivalent or alternative features with similar purposes; all the disclosed features, or All method or process steps may be combined in any way, except for mutually exclusive features and/or steps.
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