技术领域technical field
本发明涉及通信技术领域，特别是涉及一种多波束系统。The invention relates to the technical field of communication, in particular to a multi-beam system.
背景技术Background technique
多波束系统广泛应用于卫星通信、雷达、电子对抗等领域，而传统的多波束系统大多采用相控阵的方式实现。相控阵的方式可以实现波束的准确指向和灵活扫描，然而它需要大量的集成移相器、功分器和定向耦合器，因此相控阵系统设备量大、复杂度高，随之带来了成本高、可靠性较差以及后续的维护难度大等缺点。Multi-beam systems are widely used in satellite communications, radar, electronic countermeasures and other fields, while traditional multi-beam systems are mostly implemented by phased arrays. The phased array method can achieve accurate beam pointing and flexible scanning, but it requires a large number of integrated phase shifters, power splitters and directional couplers, so the phased array system has a large amount of equipment and high complexity, which brings It overcomes the disadvantages of high cost, poor reliability, and difficult subsequent maintenance.
发明内容Contents of the invention
本发明提供一种多波束系统，以解决现有技术中的多波束系统结构复杂且性能不稳定的问题。The present invention provides a multi-beam system to solve the problems of complex structure and unstable performance of the multi-beam system in the prior art.
为解决上述问题，本发明提出一种多波束系统，包括天线阵、至少一馈电网络以及至少一电子开关组，所述馈电网络包括串联的第一罗特曼透镜组和第二罗特曼透镜组；其中，所述电子开关组馈电连接所述第二罗特曼透镜组，所述第二罗特曼透镜组馈电连接所述第一罗特曼透镜组，所述第一罗特曼透镜组馈电连接所述天线阵。In order to solve the above problems, the present invention proposes a multi-beam system, including an antenna array, at least one feed network and at least one electronic switch group, and the feed network includes a first Rotman lens group and a second Rotman lens group connected in series Mann lens group; wherein, the electronic switch group feeder is connected to the second Rotman lens group, and the second Rotman lens group is feeder connected to the first Rotman lens group, and the first The Rotman lens group is fed and connected to the antenna array.
其中，所述天线阵包括m×n阵列排布的多个辐射单元，所述辐射单元包括一振子；所述多波束系统包括一馈电网络；所述第一罗特曼透镜组包括m个第一罗特曼透镜，所述第一罗特曼透镜包括n个输出口；所述一馈电网络的第一罗特曼透镜组的m×n个输出口，与m×n阵列排布的振子一一对应馈电连接，所述m、n均为正整数。Wherein, the antenna array includes a plurality of radiating elements arranged in an m×n array, and the radiating element includes an oscillator; the multi-beam system includes a feeding network; the first Rotman lens group includes m The first Rotman lens, the first Rotman lens includes n output ports; the m×n output ports of the first Rotman lens group of the feed network are arranged in an m×n array The vibrators correspond to the feed connections one by one, and both m and n are positive integers.
其中，所述天线阵包括m×n阵列排布的多个辐射单元，所述辐射单元包括第一振子和第二振子；所述多波束系统包括两馈电网络；所述第一罗特曼透镜组包括m个第一罗特曼透镜，所述第一罗特曼透镜包括n个输出口；其中，一馈电网络的第一罗特曼透镜组的m×n个输出口，与m×n阵列排布的第一振子一一对应馈电连接；另一馈电网络的第一罗特曼透镜组的m×n个输出口，与m×n阵列排布的第二振子一一对应馈电连接，所述m、n均为正整数。Wherein, the antenna array includes a plurality of radiating elements arranged in an m×n array, and the radiating elements include a first dipole and a second dipole; the multi-beam system includes two feed networks; the first Rotman The lens group includes m first Rotman lenses, and the first Rotman lens includes n output ports; wherein, the m×n output ports of the first Rotman lens group of a feed network, and m The first dipoles arranged in a ×n array correspond to feed connections one by one; the m×n output ports of the first Rotman lens group of another feed network are connected to the second dipoles arranged in an m×n array one by one Corresponding to the feed connection, both m and n are positive integers.
其中，所述第一振子和所述第二振子构成双极化压铸半波振子。Wherein, the first vibrator and the second vibrator constitute a dual-polarized die-casting half-wave vibrator.
其中，所述第一振子和所述第二振子以±45°的极化方式构成双极化压铸半波振子。Wherein, the first vibrator and the second vibrator form a dual-polarized die-casting half-wave vibrator in a polarization manner of ±45°.
其中，所述第一罗特曼透镜包括a个输入口；所述第二罗特曼透镜组包括a个第二罗特曼透镜，所述第二罗特曼透镜包括m个输出口；所述第二罗特曼透镜组的m×a个输出口，与所述第一罗特曼透镜组的m×a个输入口一一对应馈电连接实现串联，所述a为正整数。Wherein, the first Rotman lens includes a input port; the second Rotman lens group includes a second Rotman lens, and the second Rotman lens includes m output ports; The m×a output ports of the second Rotman lens group are fed in series with the m×a input ports of the first Rotman lens group in one-to-one correspondence, and a is a positive integer.
其中，所述第二罗特曼透镜包括b个输入口；所述电子开关组包括b个电子开关，所述电子开关包括a个输出口；所述电子开关组的b×a个输出口，与所述第二罗特曼透镜组的b×a个输入口一一对应馈电连接，所述b为正整数。Wherein, the second Rotman lens includes b input ports; the electronic switch group includes b electronic switches, and the electronic switch includes a output ports; the b×a output ports of the electronic switch group, One-to-one feeding connection with the b×a input ports of the second Rotman lens group, where b is a positive integer.
其中，所述电子开关具有一个输入口。Wherein, the electronic switch has an input port.
其中，所述a＝m＝8，所述n＝10，所述b＝7。Wherein, the a=m=8, the n=10, and the b=7.
其中，所述第一罗特曼透镜包括第一接地端口，所述第二罗特曼透镜包括第二接地端口。Wherein, the first Rotman lens includes a first ground port, and the second Rotman lens includes a second ground port.
本发明多波束系统包括天线阵、至少一馈电网络以及至少一电子开关组，馈电网络包括串联的第一罗特曼透镜组和第二罗特曼透镜组；其中，电子开关组馈电连接第二罗特曼透镜组，第二罗特曼透镜组馈电连接第一罗特曼透镜组，第一罗特曼透镜组馈电连接天线阵。本发明多波束系统通过两组罗特曼透镜实现二维扫描，结构简单，性能稳定且便于维护。The multi-beam system of the present invention includes an antenna array, at least one feed network and at least one electronic switch group, and the feed network includes a first Rotman lens group and a second Rotman lens group connected in series; wherein, the electronic switch group feeds The second Rotman lens group is connected, the second Rotman lens group is connected to the first Rotman lens group, and the first Rotman lens group is connected to the antenna array. The multi-beam system of the present invention realizes two-dimensional scanning through two groups of Rotman lenses, and has simple structure, stable performance and convenient maintenance.
附图说明Description of drawings
图1是本发明多波束系统第一实施方式的结构示意图；Fig. 1 is a schematic structural diagram of the first embodiment of the multi-beam system of the present invention;
图2是图1所示多波束系统第一实施方式中天线阵的结构示意图；Fig. 2 is a schematic structural diagram of the antenna array in the first embodiment of the multi-beam system shown in Fig. 1;
图3是图1所示多波束系统第一实施方式中馈电网络的结构示意图；Fig. 3 is a schematic structural diagram of the feed network in the first embodiment of the multi-beam system shown in Fig. 1;
图4是图1所示多波束系统第一实施方式中第一罗特曼透镜的结构示意图；Fig. 4 is a schematic structural view of the first Rotman lens in the first embodiment of the multi-beam system shown in Fig. 1;
图5是图1所示多波束系统第一实施方式中第二罗特曼透镜的结构示意图；Fig. 5 is a schematic structural diagram of a second Rotman lens in the first embodiment of the multi-beam system shown in Fig. 1;
图6是图1所示多波束系统第一实施方式中电子开关的结构示意图；Fig. 6 is a schematic structural diagram of an electronic switch in the first embodiment of the multi-beam system shown in Fig. 1;
图7是图1所示多波束系统第一实施方式中第一罗特曼透镜馈电时的远场方向图；Fig. 7 is a far-field pattern when feeding power to the first Rotman lens in the first embodiment of the multi-beam system shown in Fig. 1;
图8是图1所示多波束系统第一实施方式中第二罗特曼透镜馈电时的远场方向图。Fig. 8 is a far-field pattern when feeding power to the second Rotman lens in the first embodiment of the multi-beam system shown in Fig. 1 .
具体实施方式detailed description
为使本领域的技术人员更好地理解本发明的技术方案，下面结合附图和具体实施方式对发明所提供的一种天线传动装置及天线做进一步详细描述。In order to enable those skilled in the art to better understand the technical solution of the present invention, an antenna transmission device and an antenna provided by the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
请参阅图1，图1是本发明多波束系统第一实施方式的结构示意图，本实施方式多波束系统100包括天线阵11、馈电网络12和电子开关组13。Please refer to FIG. 1 . FIG. 1 is a schematic structural diagram of a first embodiment of a multi-beam system according to the present invention. The multi-beam system 100 in this embodiment includes an antenna array 11 , a feeding network 12 and an electronic switch group 13 .
其中，馈电网络12包括串联的第一罗特曼透镜组121和第二罗特曼透镜组122。电子开关组13馈电连接第二罗特曼透镜组122，第二罗特曼透镜组122馈电连接第一罗特曼透镜组121，第一罗特曼透镜组121馈电连接天线阵11。Wherein, the feeding network 12 includes a first Rotman lens group 121 and a second Rotman lens group 122 connected in series. The electronic switch group 13 is fed to the second Rotman lens group 122, the second Rotman lens group 122 is fed to the first Rotman lens group 121, and the first Rotman lens group 121 is fed to the antenna array 11 .
即本实施方式中电子开关11控制激励第二罗特曼透镜组122的输入口，并依次激励第二罗特曼透镜组122和第一罗特曼透镜组121，最后由第一罗特曼透镜组121给天线阵11馈电，从而实现天线阵11方位面和俯仰面的二维扫描。That is, in the present embodiment, the electronic switch 11 controls and excites the input port of the second Rotman lens group 122, and sequentially stimulates the second Rotman lens group 122 and the first Rotman lens group 121, and finally the first Rotman lens group The lens group 121 feeds the antenna array 11 , so as to realize the two-dimensional scanning of the azimuth plane and the elevation plane of the antenna array 11 .
天线阵11包括多个辐射单元111和反射板112，辐射单元111以m×n阵列排布的方式设置在反射板112上。本实施方式中反射板112为铝合金。辐射单元111包括一个振子，该辐射单元111为单极化辐射单元。具体请参阅图2，图2是图1所示多波束系统第一实施方式中天线阵的结构示意图。The antenna array 11 includes a plurality of radiating units 111 and a reflecting plate 112 , and the radiating units 111 are arranged on the reflecting plate 112 in an m×n array. In this embodiment, the reflector 112 is aluminum alloy. The radiation unit 111 includes a vibrator, and the radiation unit 111 is a single polarization radiation unit. Please refer to FIG. 2 for details. FIG. 2 is a schematic structural diagram of the antenna array in the first embodiment of the multi-beam system shown in FIG. 1 .
对于馈电网络12，可参阅图3、图4和图5，图3是图1所示多波束系统第一实施方式中馈电网络的结构示意图，图4是图1所示多波束系统第一实施方式中第一罗特曼透镜的结构示意图，图5是图1所示多波束系统第一实施方式中第二罗特曼透镜的结构示意图。For the feed network 12, refer to Fig. 3, Fig. 4 and Fig. 5, Fig. 3 is a schematic structural diagram of the feed network in the first embodiment of the multi-beam system shown in Fig. 1, and Fig. 4 is the first embodiment of the multi-beam system shown in Fig. 1 A schematic structural view of the first Rotman lens in an embodiment, and FIG. 5 is a schematic structural view of the second Rotman lens in the first embodiment of the multi-beam system shown in FIG. 1 .
馈电网络12中第一罗特曼透镜组121包括m个第一罗特曼透镜1211，该第一罗特曼透镜1211包括n个输出口1212。The first Rotman lens group 121 in the feeding network 12 includes m first Rotman lenses 1211 , and the first Rotman lenses 1211 include n output ports 1212 .
整个第一罗特曼透镜组121则包括m×n个输出口1212，该m×n个输出口1212与m×n阵列排布的辐射单元111一一对应馈电连接，使用50Ω同轴电缆焊接的方式，以实现天线阵11的辐射扫描。具体来说，第k1个第一罗特曼透镜1211的n个输出口1212能够对第k1列n个辐射单元111馈电，而m个第一罗特曼透镜1211的第k2个输出口1212能够对第k2行m个辐射单元111馈电。The entire first Rotman lens group 121 includes m×n output ports 1212, and the m×n output ports 1212 are connected to the radiation units 111 arranged in an m×n array in one-to-one feeding connection, using a 50Ω coaxial cable The way of welding is to realize the radiation scanning of the antenna array 11. Specifically, the n output ports 1212 of the k1th first Rotman lens 1211 can feed power to the n radiation units 111 of the k1th column, while the k2th output ports 1212 of the m first Rotman lenses 1211 It is possible to feed power to the m radiation units 111 in the k2th row.
其中m，n均为正整数，1≤k1≤m，1≤k2≤n。且水平方向的两辐射单元111之间距离为d＝0.6λ0，垂直方向的两辐射单元111之间距离为L＝0.8λ0，λ0为中心频点的自由空间波长。Where m and n are both positive integers, 1≤k1≤m, 1≤k2≤n. And the distance between the two radiation units 111 in the horizontal direction is d=0.6λ0 , the distance between the two radiation units 111 in the vertical direction is L=0.8λ0 , and λ0 is the free space wavelength of the center frequency point.
第一罗特曼透镜1211还包括a个输入口1213，因此包括m个第一罗特曼透镜1211的第一罗特曼透镜组121具有m×a个输入口1213。The first Rotman lens 1211 also includes a number of input ports 1213 , so the first Rotman lens group 121 including m first Rotman lenses 1211 has m×a number of input ports 1213 .
相应第二罗特曼透镜组122包括a个第二罗特曼透镜1221，该第二罗特曼透镜1221包括m个输出口1222。因此整个第二罗特曼透镜组122具有m×a个输出口1222。The corresponding second Rotman lens group 122 includes a second Rotman lens 1221 , and the second Rotman lens 1221 includes m output ports 1222 . Therefore, the entire second Rotman lens group 122 has m×a output ports 1222 .
上述m×a个输出口1222与m×a个输入口1213一一对应馈电连接，使用50Ω同轴电缆焊接的方式。具体来说，第k3个第二罗特曼透镜1221的m个输出口1222能够对m个第一罗特曼透镜1211的第k3个输入口馈电，而a个第二罗特曼透镜1221的第k4个输出口1222能够对第k4个第一罗特曼透镜1211的a个输入口1213馈电。The above m×a output ports 1222 are connected to the m×a input ports 1213 in a one-to-one corresponding feeder connection, and a 50Ω coaxial cable is used for welding. Specifically, the m output ports 1222 of the k3th second Rotman lens 1221 can feed power to the k3th input ports of the m first Rotman lenses 1211, and the a second Rotman lens 1221 The k4th output port 1222 of the k4th first Rotman lens 1211 can feed power to the ath input port 1213 of the k4th first Rotman lens 1211 .
其中，a为正整数，1≤k3≤a，1≤k4≤m。Wherein, a is a positive integer, 1≤k3≤a, 1≤k4≤m.
第二罗特曼透镜1221还包括b个输入口1223，包括了a个第二罗特曼透镜1221的第二罗特曼透镜组122具有b×a个输入口1223。The second Rotman lens 1221 also includes b input ports 1223 , and the second Rotman lens group 122 including a second Rotman lenses 1221 has b×a input ports 1223 .
相应的电子开关组13具有b个电子开关131，具体可参阅图6，图6是图1所示多波束系统第一实施方式中电子开关的结构示意图。电子开关131包括a个输出口132和一个输入口133。因此电子开关组13包括b×a个输出口132，而该输入口133也为多波束系统100的输入口，且输入口133为N型接头，能够方便与外部射频拉远单元(RRU，Radio Remote Unit)相连。本实施方式中电子开关131为高频电子开关。The corresponding electronic switch group 13 has b electronic switches 131 , for details, refer to FIG. 6 , which is a schematic structural diagram of the electronic switches in the first embodiment of the multi-beam system shown in FIG. 1 . The electronic switch 131 includes a output port 132 and an input port 133 . Therefore electronic switch group 13 comprises b*a output port 132, and this input port 133 is also the input port of multi-beam system 100, and input port 133 is the N-type joint, can be convenient to connect with external radio frequency remote unit (RRU, Radio Remote Unit) connected. In this embodiment, the electronic switch 131 is a high-frequency electronic switch.
电子开关组13的b×a个输出口132与第二罗特曼透镜组122的b×a个输入口1223一一对应馈电连接，使用50Ω同轴电缆焊接的方式。具体来说，第k5个电子开关的a个输出口132能够对a个第二罗特曼透镜1221的第k5个输入口1223馈电，b个电子开关的第k6个输出口132能够对第k6个第二罗特曼透镜1221的b个输入口1223馈电。The b×a output ports 132 of the electronic switch group 13 are connected to the b×a input ports 1223 of the second Rotman lens group 122 in a one-to-one corresponding feeder connection, using a 50Ω coaxial cable welding method. Specifically, the a output port 132 of the k5th electronic switch can feed power to the k5th input port 1223 of the a second Rotman lens 1221, and the k6th output port 132 of the b electronic switch can feed power to the k6th input port 1223 of the b electronic switch. The b input ports 1223 of the k6 second Rotman lenses 1221 feed power.
其中b为正整数，1≤k5≤b，1≤k6≤a。Where b is a positive integer, 1≤k5≤b, 1≤k6≤a.
以上第一罗特曼透镜1211能够对单列辐射单元111馈电，从而实现天线阵11在俯仰面的一维扫描；而第二罗特曼透镜1221则在不同输入口1223的激励下经由第一罗特曼透镜1211对单列辐射单元111馈电，从而实现天线阵11在方位面的扫描。通过电子开关组15控制第二罗特曼透镜1221的输入口1223激励的切换，从而实现天线阵11在俯仰面和方位面的二维扫描。The above-mentioned first Rotman lens 1211 can feed power to the single row of radiating elements 111, so as to realize the one-dimensional scanning of the antenna array 11 on the elevation plane; while the second Rotman lens 1221 is excited by different input ports 1223 through the first The Rotman lens 1211 feeds power to the single row of radiating elements 111, so as to realize the scanning of the antenna array 11 in the azimuth plane. The switching of the excitation of the input port 1223 of the second Rotman lens 1221 is controlled by the electronic switch group 15, so as to realize the two-dimensional scanning of the antenna array 11 in the elevation plane and the azimuth plane.
第一罗特曼透镜1211上还具有第一接地端口1214，第二罗特曼透镜1221上具有第二接地端口1224。且第一罗特曼透镜1211和第二罗特曼透镜1221均为微带结构，即以介质基板为基础，在介质基板下表面覆盖铜层，介质基板上表面设置微带线路，微带线路则包括罗特曼透镜的输入口、输出口、透镜腔体以及接地端口。The first Rotman lens 1211 also has a first ground port 1214 , and the second Rotman lens 1221 has a second ground port 1224 . In addition, both the first Rotman lens 1211 and the second Rotman lens 1221 have a microstrip structure, that is, based on a dielectric substrate, the lower surface of the dielectric substrate is covered with a copper layer, and the upper surface of the dielectric substrate is provided with a microstrip line. It includes the input port, output port, lens cavity and ground port of the Rotman lens.
其中，输入口包括50Ω输入传输线以及与透镜腔体连接的阻抗渐变段；输出口也包括50Ω输出传输线以及与透镜腔体连接的阻抗渐变段；透镜腔体是能够使信号从输入口到各个输出口产生不同时延的特殊腔体，其根据准光学理论设计；接地端口包括50Ω输出传输线以及与透镜腔体连接的阻抗渐变段，50Ω输出传输线末端通过焊接50Ω贴片电阻来接地，其目的是吸收透镜腔体内谐振的信号，使输出口的幅度分布更加理想，达到有效抑制阵列波束旁瓣的效果。上述阻抗渐变段能够使输入传输线的阻抗与透镜腔体达到理想匹配效果。Among them, the input port includes a 50Ω input transmission line and an impedance gradient section connected to the lens cavity; the output port also includes a 50Ω output transmission line and an impedance gradient section connected to the lens cavity; the lens cavity can make the signal from the input port to each output. The special cavity with different time delays at the mouth is designed according to the quasi-optical theory; the ground port includes a 50Ω output transmission line and an impedance gradient section connected to the lens cavity, and the end of the 50Ω output transmission line is grounded by welding a 50Ω chip resistor. Absorb the resonant signal in the lens cavity, make the amplitude distribution of the output port more ideal, and achieve the effect of effectively suppressing the side lobe of the array beam. The impedance gradient section mentioned above can achieve an ideal matching effect between the impedance of the input transmission line and the lens cavity.
本实施方式中a＝m＝8、n＝10、b＝7，天线阵11为8×10的辐射单元阵列。电子开关131为包括8个输出口132和1个输入口133，即电子开关131为1出8的单刀8掷开关。且电子开关131为高频输出，开关整条通路的时延达到微秒量级。In this embodiment, a=m=8, n=10, b=7, and the antenna array 11 is an 8×10 radiation element array. The electronic switch 131 includes 8 output ports 132 and 1 input port 133 , that is, the electronic switch 131 is a single-pole 8-throw switch with 1 output 8. Moreover, the electronic switch 131 is a high-frequency output, and the time delay of switching the entire path reaches the order of microseconds.
第一罗特曼透镜组121具有8个第一罗特曼透镜1211，第一罗特曼透镜1211具有8个输入口1213(也称为波束口)和10个输出口1212(也称为阵列口)，而第一罗特曼透镜1211可称为8波束10单元Rotman透镜。The first Rotman lens group 121 has 8 first Rotman lenses 1211, and the first Rotman lens 1211 has 8 input ports 1213 (also called beam ports) and 10 output ports 1212 (also called arrays). mouth), and the first Rotman lens 1211 may be referred to as an 8-beam 10-element Rotman lens.
激励一个第一罗特曼透镜1211的8个输入口1213，从而对10个辐射单元馈电，能够形成8个波束。具体可参阅图7，图7是图1所示多波束系统第一实施方式中第一罗特曼透镜馈电时的远场方向图。8个波束的扫描范围在﹣20°和﹢20°之间，而8个波束的固定指向分别为±20°、±16°、±9°和±3°，波束半功率角宽度为9.5±0.5°且各波束之间的交叉电平为﹣1dB。Exciting 8 input ports 1213 of a first Rotman lens 1211 to feed 10 radiating elements can form 8 beams. Please refer to FIG. 7 for details. FIG. 7 is a far-field pattern when feeding power to the first Rotman lens in the first embodiment of the multi-beam system shown in FIG. 1 . The scanning range of the 8 beams is between -20° and ﹢20°, and the fixed pointing of the 8 beams are ±20°, ±16°, ±9° and ±3° respectively, and the beam half-power angular width is 9.5± 0.5° and the crossover level between each beam is -1dB.
第二罗特曼透镜组122具有8个第二罗特曼透镜1221，第二罗特曼透镜1221具有7个输入口1223和8个输出口1222，该第二个罗特曼透镜1221可称为7波束8单元Rotman透镜。The second Rotman lens group 122 has 8 second Rotman lenses 1221, and the second Rotman lens 1221 has 7 input ports 1223 and 8 output ports 1222, and the second Rotman lens 1221 can be called It is a Rotman lens with 7 beams and 8 elements.
激励一个第二罗特曼透镜1221的7个输入口1223，经由第一罗特曼透镜组121从而对8个辐射单元馈电，能够形成7个波束。具体可参阅图8，图8是图1所示多波束系统第一实施方式中第二罗特曼透镜馈电时的远场方向图。该7个波束的扫描范围在﹣30°和﹢30°之间，各个波束的固定指向分别为±30°、±20°、±10°和0°，波束半功率角宽度为14.5±0.5°且各波束之间的交叉电平为﹣1dB。Seven input ports 1223 of one second Rotman lens 1221 are excited to feed power to eight radiating elements through the first Rotman lens group 121, and seven beams can be formed. Please refer to FIG. 8 for details. FIG. 8 is a far-field pattern when feeding power to the second Rotman lens in the first embodiment of the multi-beam system shown in FIG. 1 . The scanning range of the 7 beams is between -30° and +30°, the fixed direction of each beam is ±30°, ±20°, ±10° and 0° respectively, and the beam half-power angular width is 14.5±0.5° And the crossover level between each beam is -1dB.
以上对单极化的辐射单元111的馈电方式进行说明。辐射单元111还可为圆极化、线极化或双极化。The feeding manner of the single-polarized radiation unit 111 has been described above. The radiation unit 111 can also be circularly polarized, linearly polarized or dual polarized.
若辐射单元为双极化，辐射单元包括双极化压铸振子，双极化压铸振子采用开模加工制得，能够保证振子的结构强度和加工精度，使天线阵具有良好的电路性能和辐射性能。具体来说，双极化压铸振子由第一振子和第二振子以±45°的极化方式构成，该双极化压铸振子输入阻抗为50Ω。If the radiating unit is dual-polarized, the radiating unit includes a dual-polarized die-cast vibrator. The dual-polarized die-cast vibrator is manufactured by mold opening, which can ensure the structural strength and processing accuracy of the vibrator, so that the antenna array has good circuit performance and radiation performance. . Specifically, the dual-polarized die-casting vibrator is composed of a first vibrator and a second vibrator in a polarization manner of ±45°, and the input impedance of the dual-polarized die-casting vibrator is 50Ω.
而对于双极化压铸振子的多波束系统，基于以上对单极化辐射单元的描述，可知，将其中单极化振子替换为双极化压铸振子后。多波束系统中包括有两个馈电网络，As for the multi-beam system of the dual-polarization die-casting vibrator, based on the above description of the single-polarization radiation unit, it can be seen that the single-polarization vibrator is replaced by the dual-polarization die-casting vibrator. The multi-beam system includes two feed networks,
其中，一个馈电网络的第一罗特曼透镜组的m×n个输出口与m×n阵列排布的第一振子一一对应馈电连接；另一馈电网络的第一罗特曼透镜组的m×n个输出口与m×n阵列排布的第二振子一一对应馈电连接。Among them, the m×n output ports of the first Rotman lens group of one feed network are connected to the first oscillators arranged in an m×n array in one-to-one correspondence; the first Rotman lens group of the other feed network The m×n output ports of the lens group are connected to the second vibrators arranged in an m×n array in a one-to-one corresponding feeder connection.
其他馈电网络内第一罗特曼透镜组和第二罗特曼透镜组的连接方式、电子开关组与第二罗特曼透镜组的连接方式与上述单极化辐射单元中类似，具体不再赘述。The connection mode of the first Rotman lens group and the second Rotman lens group in other feeding networks, the connection mode of the electronic switch group and the second Rotman lens group are similar to those of the above-mentioned single-polarization radiation unit. Let me repeat.
以上所述仅为本发明的实施方式，并非因此限制本发明的专利范围，凡是利用本发明说明书及附图内容所作的等效结构或等效流程变换，或直接或间接运用在其他相关的技术领域，均同理包括在本发明的专利保护范围内。The above is only the embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the description of the present invention and the contents of the accompanying drawings, or directly or indirectly used in other related technologies fields, all of which are equally included in the scope of patent protection of the present invention.
| Application Number | Priority Date | Filing Date | Title |
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| CN201610788834.2ACN106257748A (en) | 2016-08-31 | 2016-08-31 | A multi-beam system |
| Application Number | Priority Date | Filing Date | Title |
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| CN201610788834.2ACN106257748A (en) | 2016-08-31 | 2016-08-31 | A multi-beam system |
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| CN106257748Atrue CN106257748A (en) | 2016-12-28 |
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| CN201610788834.2APendingCN106257748A (en) | 2016-08-31 | 2016-08-31 | A multi-beam system |
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| CB02 | Change of applicant information | Inventor after:Li Ruli Inventor after:Gao Zhuofeng Inventor after:Fang Zeming Inventor after:Zhou Ding Inventor after:Chen Guangyang Inventor after:Yao Xiangxi Inventor before:Li Ruli | |
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