CN114336021A - Broadband circularly polarized substrate integrated waveguide resonant cavity antenna array - Google Patents
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Abstract
本发明公开了宽带圆极化基片集成波导谐振腔天线阵列，包括上层介质板和下层介质板，上层介质板顶部设置由2×2个子阵组成金属贴片超构表面阵列，每个子阵上有16个切角微带贴片，下层介质板的顶部设置有金属地板，金属地板中心刻蚀4个带有对称枝节的长条形缝隙，4个缝隙顺序旋转设置，下层介质板的底部设置有微带馈电功分移相网络，微带馈电功分移相网络的馈电线终端与50Ω的SMA接头相连。提高了现有缝隙天线的增益，展宽轴比带宽，降低天线前后比。
The invention discloses a broadband circularly polarized substrate integrated waveguide resonant cavity antenna array, which includes an upper dielectric plate and a lower dielectric plate. The top of the upper dielectric plate is provided with a metal patch metasurface array composed of 2×2 sub-arrays. There are 16 chamfered microstrip patches, the top of the lower dielectric plate is provided with a metal floor, the center of the metal floor is etched with 4 elongated slits with symmetrical branches, the 4 slits are set in sequence, and the bottom of the lower dielectric board is set There is a microstrip feed power division and phase shift network, and the feeder terminal of the microstrip feed power division and phase shift network is connected to a 50Ω SMA connector. The gain of the existing slot antenna is improved, the bandwidth of the axial ratio is widened, and the front-to-back ratio of the antenna is reduced.
Description
技术领域technical field
本发明属于波导天线技术领域，涉及宽带圆极化基片集成波导谐振腔天线阵列。The invention belongs to the technical field of waveguide antennas, and relates to a broadband circularly polarized substrate integrated waveguide resonant cavity antenna array.
背景技术Background technique
与线性极化天线相比，圆极化天线因为有着明显的优势在无线通信技术中得到了广泛的应用。这些优点包括对多径反射不敏感，抑制偏振损耗，对电离层引入的法拉第旋转效应免疫等等。实现圆极化辐射的天线有很多种。微带贴片天线是一种典型的圆极化天线，具有重量轻、剖面低、制作方便等优点。通过切割矩形贴片的特定角，激发两个90°相移的正交模态，从而产生圆极化辐射。但是这种类型天线的3-dB轴比带宽一般很窄，不能满足实际需求，为了提高轴比带宽，顺序旋转(SR)技术应运而生并取得了广泛的应用。Compared with linearly polarized antennas, circularly polarized antennas have been widely used in wireless communication technology because of their obvious advantages. These advantages include insensitivity to multipath reflections, suppression of polarization loss, immunity to Faraday rotation effects introduced by the ionosphere, and more. There are many kinds of antennas that realize circularly polarized radiation. Microstrip patch antenna is a typical circularly polarized antenna, which has the advantages of light weight, low profile, and easy fabrication. By cutting specific corners of a rectangular patch, two 90° phase-shifted orthogonal modes are excited, resulting in circularly polarized radiation. However, the 3-dB axial ratio bandwidth of this type of antenna is generally very narrow, which cannot meet the actual needs. In order to improve the axial ratio bandwidth, the sequential rotation (SR) technology emerges as the times require and has been widely used.
近年来，为了提高天线性能。人们对超表面结构进行了广泛的研究，这些改进包括线到圆极化转换，扩展阻抗和轴比带宽，增益增强等等。但是由于串联馈电微带网络采用多段阻抗变压器，建模过程较为复杂。此外，微带线的辐射损耗和加工精度的影响也不容忽视。因此，利用基片集成波导(SIW)技术馈电是圆极化天线阵列的较好选择。In recent years, in order to improve antenna performance. Metasurface structures have been extensively studied, and these improvements include linear-to-circular polarization conversion, extended impedance and axial-ratio bandwidth, gain enhancement, and more. However, since the series-fed microstrip network adopts multi-segment impedance transformers, the modeling process is more complicated. In addition, the influence of radiation loss and processing accuracy of microstrip line cannot be ignored. Therefore, feeding with substrate-integrated waveguide (SIW) technology is a better choice for circularly polarized antenna arrays.
发明内容SUMMARY OF THE INVENTION
本发明的目的是提供一种宽带圆极化基片集成波导谐振腔天线阵列，提高了现有缝隙天线的增益，展宽轴比带宽，降低天线前后比。The purpose of the present invention is to provide a broadband circularly polarized substrate integrated waveguide resonant cavity antenna array, which improves the gain of the existing slot antenna, widens the axial ratio bandwidth, and reduces the antenna front-to-back ratio.
本发明所采用的技术方案是，宽带圆极化基片集成波导谐振腔天线阵列，包括上层介质板和下层介质板，上层介质板顶部设置由2×2个子阵组成金属贴片超构表面阵列，每个子阵上有16个切角微带贴片，下层介质板的顶部设置有金属地板，金属地板中心刻蚀4个带有对称枝节的长条形缝隙，4个缝隙顺序旋转设置，下层介质板的底部设置有微带馈电功分移相网络，微带馈电功分移相网络的馈电线终端与50Ω的SMA接头相连。The technical scheme adopted in the present invention is that the broadband circularly polarized substrate integrated waveguide resonant cavity antenna array includes an upper dielectric plate and a lower dielectric plate, and a metal patch metasurface array composed of 2×2 sub-arrays is arranged on the top of the upper dielectric plate. , there are 16 microstrip patches on each sub-array, the top of the lower dielectric plate is provided with a metal floor, the center of the metal floor is etched with 4 elongated slits with symmetrical branches, and the 4 slits are rotated and set in sequence. The bottom of the dielectric plate is provided with a microstrip feeding power division and phase shifting network, and the feeder terminal of the microstrip feeding power division and phase shifting network is connected to a 50Ω SMA connector.
本发明的特点还在于：The feature of the present invention also lies in:
缝隙的辐射零点附近对称加载有两个短枝节。There are two short branches symmetrically loaded near the radiation zero point of the gap.
16个微带贴片构成一个子阵，轴向距离相同，形成圆极化。16 microstrip patches form a sub-array with the same axial distance to form circular polarization.
4个超构表面子阵顺序旋转放置。The 4 metasurface subarrays are sequentially rotated and placed.
缝隙位于超构表面子阵的正下方，4个缝隙与4个子阵一一对应。The gap is located just below the metasurface sub-array, and the four gaps correspond to the four sub-arrays one-to-one.
每个子阵单元四周分布有SIW谐振腔。SIW resonators are distributed around each sub-array unit.
本发明的有益效果是：本发明宽带圆极化基片集成波导谐振腔天线阵列，提高了现有缝隙天线的增益，展宽轴比带宽，降低天线前后比。引入多模谐振理论，展宽天线带宽，超构表面位于辐射天线的顶部，切角单元形成线圆极化转换。应用顺序旋转技术，构建宽带移相馈电网络，提升阵列圆极化带宽。同时，传统的缝隙天线后向辐射比较大，能量损失较多，本发明宽带圆极化基片集成波导谐振腔天线阵列采用SIW谐振腔的设计，进一步提高了天线的前后比。The beneficial effects of the invention are: the broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the invention improves the gain of the existing slot antenna, widens the axial ratio bandwidth, and reduces the front-to-back ratio of the antenna. The multi-mode resonance theory is introduced to widen the bandwidth of the antenna. The metasurface is located on the top of the radiating antenna, and the chamfered element forms a linear circular polarization conversion. The sequential rotation technology is applied to construct a broadband phase-shifted feed network to improve the circularly polarized bandwidth of the array. At the same time, the traditional slot antenna has relatively large backward radiation and more energy loss. The broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the present invention adopts the design of SIW resonant cavity, which further improves the front-to-back ratio of the antenna.
附图说明Description of drawings
图1是本发明宽带圆极化基片集成波导谐振腔天线阵列中子阵的结构示意图；1 is a schematic structural diagram of a sub-array in a broadband circularly polarized substrate integrated waveguide resonator antenna array of the present invention;
图2是本发明宽带圆极化基片集成波导谐振腔天线阵列中子阵进化对比图；Fig. 2 is the broadband circular polarization substrate integrated waveguide resonator antenna array neutron array evolution comparison diagram of the present invention;
图3是本发明宽带圆极化基片集成波导谐振腔天线阵列中子阵S参数随频率变化的对比图；3 is a comparison diagram of the variation of the S parameter of the sub-array with frequency in the broadband circularly polarized substrate integrated waveguide resonator antenna array of the present invention;
图4是本发明宽带圆极化基片集成波导谐振腔天线阵列中子阵增益随频率变化的对比图；Fig. 4 is the contrast diagram of the sub-array gain with frequency in the broadband circularly polarized substrate integrated waveguide resonator antenna array of the present invention;
图5是本发明宽带圆极化基片集成波导谐振腔天线阵列子阵在5GHz时增益方向图随频率变化的对比图；5 is a comparison diagram of the gain pattern of the broadband circularly polarized substrate integrated waveguide resonator cavity antenna array sub-array at 5 GHz as a function of frequency;
图6是本发明宽带圆极化基片集成波导谐振腔天线阵列中子阵轴比随频率变化变化的对比图；Fig. 6 is the contrast diagram of the change of the sub-array axial ratio with the frequency of the broadband circularly polarized substrate integrated waveguide resonator antenna array of the present invention;
图7是本发明宽带圆极化基片集成波导谐振腔天线阵列中馈电网络的结构示意图；7 is a schematic structural diagram of a feeding network in the broadband circularly polarized substrate integrated waveguide resonator cavity antenna array of the present invention;
图8是本发明宽带圆极化基片集成波导谐振腔天线阵列中馈电网络的S参数随频率变化的对比图；8 is a comparison diagram of the S parameter of the feed network in the broadband circularly polarized substrate integrated waveguide resonator cavity antenna array of the present invention as a function of frequency;
图9是本发明宽带圆极化基片集成波导谐振腔天线阵列的结构示意图；9 is a schematic structural diagram of a broadband circularly polarized substrate integrated waveguide resonator cavity antenna array of the present invention;
图10是本发明宽带圆极化基片集成波导谐振腔天线阵列中S参数随频率变化的仿真实测曲线；Fig. 10 is the simulation measurement curve of the variation of S parameter with frequency in the broadband circularly polarized substrate integrated waveguide resonator cavity antenna array of the present invention;
图11是本发明宽带圆极化基片集成波导谐振腔天线阵列中轴比随频率变化的仿真实测曲线；Fig. 11 is the simulation measurement curve of the change of the axial ratio of the broadband circularly polarized substrate integrated waveguide resonator cavity antenna array with frequency of the present invention;
图12是本发明宽带圆极化基片集成波导谐振腔天线阵列中增益随频率变化的仿真实测曲线；Fig. 12 is the simulation measurement curve of the variation of gain with frequency in the broadband circularly polarized substrate integrated waveguide resonator cavity antenna array of the present invention;
图13是本发明宽带圆极化基片集成波导谐振腔天线阵列中5GHz时E面方向图的仿真实测曲线；Fig. 13 is the simulation measurement curve of the E-plane pattern at 5 GHz in the broadband circularly polarized substrate integrated waveguide resonator antenna array of the present invention;
图14是本发明宽带圆极化基片集成波导谐振腔天线阵列中5GHz时H面方向图随频率变化的仿真实测曲线。FIG. 14 is a simulated and measured curve of the H-plane pattern changing with frequency in the broadband circularly polarized substrate integrated waveguide resonator cavity antenna array of the present invention at 5 GHz.
具体实施方式Detailed ways
下面结合附图和具体实施方式对本发明进行详细说明。The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
本发明宽带圆极化基片集成波导谐振腔天线阵列，如图1所示，包括上层介质板和下层介质板，上层介质板顶部设置由2×2个子阵组成金属贴片超构表面阵列，每个子阵上有16个切角微带贴片，下层介质板的顶部设置有金属地板，金属地板中心刻蚀4个带有对称枝节的长条形缝隙，4个缝隙顺序旋转设置，下层介质板的底部设置有微带馈电功分移相网络，微带馈电功分移相网络的馈电线终端与50Ω的SMA接头相连。缝隙的辐射零点附近对称加载有两个短枝节。16个微带贴片构成一个子阵，轴向距离相同，形成圆极化。4个超构表面子阵顺序旋转放置。缝隙位于超构表面子阵的正下方，4个缝隙与4个子阵一一对应。每个子阵单元四周分布有SIW谐振腔。The broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the present invention, as shown in FIG. 1, includes an upper dielectric plate and a lower dielectric plate, and a metal patch metasurface array composed of 2×2 sub-arrays is arranged on the top of the upper dielectric plate, There are 16 microstrip patches on each sub-array. The top of the lower dielectric plate is provided with a metal floor. The center of the metal floor is etched with 4 long strips with symmetrical branches. The 4 slots are rotated and set in sequence. The bottom of the board is provided with a microstrip feeding power division phase-shifting network, and the feeder terminal of the microstrip feeding power division and phase-shifting network is connected to a 50Ω SMA connector. There are two short branches symmetrically loaded near the radiation zero point of the gap. 16 microstrip patches form a sub-array with the same axial distance to form circular polarization. The 4 metasurface subarrays are sequentially rotated and placed. The gap is located just below the metasurface sub-array, and the four gaps correspond to the four sub-arrays one-to-one. SIW resonators are distributed around each sub-array unit.
本发明宽带圆极化基片集成波导谐振腔天线阵列，该阵列的子阵由两层介质板和三层金属面组成，上层介质板的顶部放置有16个的切角微带贴片，下层介质板的顶部设置有金属地板，金属地板中心刻蚀带有对称枝节的长条形缝隙，下层介质板的底部设置有微带馈电线，馈电线终端与50Ω的SMA接头相连。天线由多模缝隙天线进行馈电,两个短枝节与对称添加在缝隙的辐射零点附近，引入了额外的辐射模式，有效的展宽了天线的工作带宽。The broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the invention, the sub-array of the array is composed of two layers of dielectric plates and three layers of metal surfaces, 16 cut-angle microstrip patches are placed on the top of the upper layer dielectric plate, and the lower layer The top of the dielectric board is provided with a metal floor, and the center of the metal floor is etched with long slits with symmetrical branches. The bottom of the lower dielectric board is provided with a microstrip feeder, and the feeder terminal is connected to a 50Ω SMA connector. The antenna is fed by a multi-mode slot antenna, and two short branches and symmetry are added near the radiation zero point of the slot, which introduces additional radiation modes and effectively widens the working bandwidth of the antenna.
本发明宽带圆极化基片集成波导谐振腔天线阵列构成的天线，介质板采用两块的介电常数为3.38的Rogers 4003C介质板，厚度分别为H1和H2，介质板尺寸L1×L1，16个的切角微带金属贴片单元位于上层介质板顶面，SIW谐振腔分布在金属单元四周，直径Dsiw，相距为Psiw的金属通孔连接贴片和地板，金属地板位于下层介质板顶面，两层介质板之间无空隙。金属地板中心刻蚀带有对称枝节的长条形缝隙，下层介质板的底部设置有微带馈电线。本发明宽带圆极化基片集成波导谐振腔天线阵列构成的天线采用侧向馈电，共有1个馈电端口，馈电线终端与50Ω的SMA接头相连。In the antenna formed by the broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the present invention, the dielectric plate adopts two Rogers 4003C dielectric plates with a dielectric constant of 3.38, the thicknesses are H 1 and H 2 respectively, and the size of the dielectric plate is L 1 × L 1 , 16 cut-angle microstrip metal patch units are located on the top surface of the upper dielectric plate, SIW resonators are distributed around the metal unit, the diameter D siw , and the metal through holes with a distance of P siw connect the patch and the floor, and the metal floor It is located on the top surface of the lower dielectric board, and there is no gap between the two dielectric boards. A long slot with symmetrical branches is etched in the center of the metal floor, and a microstrip feed line is arranged at the bottom of the lower dielectric plate. The antenna formed by the broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the invention adopts side feeding, has one feeding port in total, and the terminal of the feeding line is connected with a 50Ω SMA connector.
本发明宽带圆极化基片集成波导谐振腔天线阵列构成的天线在馈电部分引入多模谐振理论，展宽天线带宽。其次在辐射天线的顶部加载超构表面，切角单元形成线圆极化转换，应用顺序旋转技术，构建宽带移相馈电网络，提升阵列圆极化带宽。同时，传统的缝隙天线后向辐射比较大，能量损失较多，本发明宽带圆极化基片集成波导谐振腔天线阵列采用SIW谐振腔的设计，进一步提高了天线的前后比。The antenna formed by the broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the invention introduces the multi-mode resonance theory in the feeding part to widen the bandwidth of the antenna. Secondly, a metasurface is loaded on the top of the radiating antenna, the chamfered element forms a linear circular polarization conversion, and the sequential rotation technique is applied to construct a broadband phase-shifting feed network to improve the circular polarization bandwidth of the array. At the same time, the traditional slot antenna has relatively large backward radiation and more energy loss. The broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the present invention adopts the design of SIW resonant cavity, which further improves the front-to-back ratio of the antenna.
图2为天线的进化图设计，天线由两层介质板组成，由多模缝隙天线馈电，超构表面由4×4切角贴片单元组成，位于上层介质板顶部。在天线的基础上，在超构表面的外围引入了SIW谐振腔，形成了天线2。从图3和图4中可以看到天线2对比与天线1阻抗带宽在低频部分有小的展宽(100MHz)，而增益也有不大的提升(大概0.2dBi)，这说明SIW谐振腔对于原始天线的性能不会造成大的恶化，而图5看出，SIW谐振腔可以有效降低后向辐射，提高天线的前后比，这里因为SIW谐振腔有效的束缚了超构表面的能量，减小了能量的流失，在一定程度上提高了天线的增益。同时由于SIW谐振腔自身的辐射特性，减小了后向辐射，从而提高了天线整体的前后比。值得注意的是，图5看出虽然天线1和天线2都采用了经典的切角单元实现圆极化，但是圆极化的带框很窄，只有350MHz(4.55-4.9GHz)，为了进一步增加圆极化带宽，本发明宽带圆极化基片集成波导谐振腔天线阵列采用经典的顺序旋转馈电网络提高天线阵列的圆极化特性，增强天线的可用性。Figure 2 shows the evolution diagram design of the antenna. The antenna is composed of two layers of dielectric plates, fed by a multimode slot antenna, and the metasurface is composed of 4×4 corner-cut patch units located on top of the upper layer of the dielectric plate. On the basis of the antenna, an SIW resonant cavity is introduced on the periphery of the metasurface to form the
图7中详细给出了馈电网络和新颖的宽带移项器结构以及性能参数，通过调节移项器的宽度W3和枝节长度L11和L12，移相器可以在很宽的频带内实现相位的调控。图8给出了移相器S参数和相位随频率变化曲线，可以清楚的看到在整个工作频带内，相位差稳定在90±3.5°，效果非常好。为了验证天线性能，对于本发明宽带圆极化基片集成波导谐振腔天线阵列的天线子阵进行组阵，圆极化天线阵列结构图如图9所示，天线阵列依然由两层介质板和三层金属面构成，其中蓝色部分是馈电网络结构。阵元间距为D，为了提高天线的轴比带宽，四个子阵按顺序旋转放置，由图7所示的馈电网络进行馈电。The feed network and the novel broadband phase shifter structure and performance parameters are given in detail in Fig. 7. By adjusting the phase shifter width W 3 and branch lengths L 11 and L 12 , the phase shifter can operate in a wide frequency band To achieve phase control. Figure 8 shows the phase shifter's S-parameter and the phase change curve with frequency. It can be clearly seen that in the entire working frequency band, the phase difference is stable at 90±3.5°, and the effect is very good. In order to verify the antenna performance, the antenna sub-arrays of the broadband circularly polarized substrate integrated waveguide resonator antenna array of the present invention are arrayed. The structure of the circularly polarized antenna array is shown in Figure 9. The antenna array is still composed of two layers of It is composed of three layers of metal surfaces, and the blue part is the feeding network structure. The array element spacing is D. In order to improve the axial ratio bandwidth of the antenna, the four sub-arrays are rotated and placed in sequence, and fed by the feeding network shown in Figure 7.
图10给出了S参数随频率变化的仿真实测图，从图中可以看出，天线的仿真工作带宽分别为1.9GHz(4.05-5.95GHz)，而实测带宽为1.8GHz(4.15-5.95GHz)。仿真结果与实测结果的差异主要是由于加工误差和焊缝质量造成的。我们注意到对比与单元的S参数，阵列的工作带宽有一定程度的提升，这应该归功于馈电网络的作用。图11给出了圆极化阵列轴比随频率变化的仿真实测图，仿真工作带宽分别为1.25GHz(4.4-5.65GHz)带宽1.3GHz(4.2-5.5GHz)。可以明显的看到，对比与图6，天线的轴比带宽得到了充分的展宽，这应该是顺序旋转法的功劳，也进一步验证了顺序旋转法提升圆极化性能的正确性，同时也在侧面验证了本发明宽带圆极化基片集成波导谐振腔天线阵列的宽带功分移相网络的有效性。图12给出了增益随频率变化的仿真实测图，从图中可以看出仿真增益在工作频带范围内比较稳定，在5.4GHz是峰值增益为12.1dBi，实测增益与仿真增益相似度较高。图13和14分别给出了圆极化天线阵列工作在5GHz时的E面和H面的仿真和实测方向图曲线，可以看出仿真和实测的相似度较高，特别是主瓣的吻合度很好，差异主要来自于测试环境的影响以及加工误差。Figure 10 shows the simulated and measured graph of S-parameters varying with frequency. It can be seen from the figure that the simulated operating bandwidth of the antenna is 1.9GHz (4.05-5.95GHz), while the measured bandwidth is 1.8GHz (4.15-5.95GHz). . The difference between the simulation results and the measured results is mainly due to the machining error and weld quality. We noticed that compared with the S-parameters of the unit, the operating bandwidth of the array has been improved to a certain extent, which should be attributed to the effect of the feeding network. Figure 11 shows the simulated and measured graph of the axial ratio of the circularly polarized array changing with frequency. The simulated operating bandwidths are 1.25 GHz (4.4-5.65 GHz) and 1.3 GHz (4.2-5.5 GHz) respectively. It can be clearly seen that compared with Figure 6, the axial ratio bandwidth of the antenna has been fully broadened, which should be the credit of the sequential rotation method, which further verifies the correctness of the sequential rotation method to improve the circular polarization performance. The effectiveness of the broadband power division phase shifting network of the broadband circularly polarized substrate integrated waveguide resonator cavity antenna array of the present invention is verified from the side. Figure 12 shows the simulated and measured graph of the gain changing with frequency. It can be seen from the figure that the simulated gain is relatively stable within the operating frequency band. At 5.4 GHz, the peak gain is 12.1 dBi, and the measured gain is similar to the simulated gain. Figures 13 and 14 show the simulated and measured pattern curves of the E-plane and H-plane of the circularly polarized antenna array operating at 5 GHz, respectively. It can be seen that the similarity between the simulation and the actual measurement is high, especially the coincidence of the main lobe. Well, the difference mainly comes from the influence of the test environment and the processing error.
本发明宽带圆极化基片集成波导谐振腔天线阵列，包括两层介质板和三层金属面，上层介质板的顶部放置由2×2个子阵组成金属贴片超构表面阵列，每个子阵有16个切角微带贴片，呈4×4分布，下层介质板的顶部设置有金属地板，金属地板中心4个刻蚀带有对称枝节的长条形缝隙，4个缝隙顺序旋转放置，每个缝隙位于超构表面子阵的正下方，下层介质板的底部设置有微带馈电功分移相网络，馈电线终端与50Ω的SMA接头相连。提高了传统缝隙天线的增益，展宽轴比带宽，降低天线前后比。引入多模谐振理论，展宽天线带宽，超构表面位于辐射天线的顶部，切角单元形成线圆极化转换。应用顺序旋转技术，构建宽带移相馈电网络，提升阵列圆极化带宽。同时，传统的缝隙天线后向辐射比较大，能量损失较多，本发明宽带圆极化基片集成波导谐振腔天线阵列采用SIW谐振腔的设计，进一步提高了天线的前后比。The broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the invention includes two layers of dielectric plates and three layers of metal surfaces. The top of the upper layer of dielectric plates is placed on the top of the upper layer of the dielectric plate to form a metal patch metasurface array composed of 2×2 sub-arrays. There are 16 chamfered microstrip patches in a 4×4 distribution. The top of the lower dielectric board is provided with a metal floor. The center of the metal floor is etched with 4 elongated slits with symmetrical branches. The 4 slits are rotated and placed in sequence. Each slot is located just below the metasurface sub-array, the bottom of the lower dielectric plate is provided with a microstrip feed power division phase shift network, and the feed line terminal is connected to a 50Ω SMA connector. The gain of the traditional slot antenna is improved, the bandwidth of the axial ratio is widened, and the front-to-back ratio of the antenna is reduced. The multi-mode resonance theory is introduced to widen the bandwidth of the antenna. The metasurface is located on the top of the radiating antenna, and the chamfered element forms a linear circular polarization conversion. The sequential rotation technology is applied to construct a broadband phase-shifted feed network to improve the circularly polarized bandwidth of the array. At the same time, the traditional slot antenna has relatively large backward radiation and more energy loss. The broadband circularly polarized substrate integrated waveguide resonant cavity antenna array of the present invention adopts the design of SIW resonant cavity, which further improves the front-to-back ratio of the antenna.
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115173051A (en) * | 2022-08-01 | 2022-10-11 | 曲阜师范大学 | Broadband high-gain circularly polarized antenna array |
| CN115173068A (en) * | 2022-07-20 | 2022-10-11 | 华南理工大学 | Broadband circularly polarized substrate integrated waveguide horn antenna array and wireless communication equipment |
| CN115347359A (en) * | 2022-08-19 | 2022-11-15 | 曲阜师范大学 | Broadband high-gain circularly polarized magnetoelectric dipole antenna array |
| GB2624105A (en) * | 2022-09-28 | 2024-05-08 | Novocomms Ltd | Meta-surface reconfigurable antenna array |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060132359A1 (en) * | 2004-12-22 | 2006-06-22 | Tatung Co., Ltd. | Circularly polarized array antenna |
| CN105870623A (en) * | 2016-06-07 | 2016-08-17 | 电子科技大学 | Broadband circular polarization high-gain low-profile microstrip slot antenna capable of loading hyper-surface |
| CN109713437A (en) * | 2018-12-05 | 2019-05-03 | 北京遥测技术研究所 | A kind of wide-band high gain circular polarization microstrip antenna |
| CN109904605A (en) * | 2019-03-05 | 2019-06-18 | 电子科技大学 | Wideband Polarization Reconfigurable Antenna and High Performance Antenna Array Based on Hybrid HIS |
| CN110444864A (en) * | 2019-08-02 | 2019-11-12 | 华南理工大学 | A kind of super-wide band high-gain millimeter wave differential feed encapsulating antenna |
| CN210137010U (en) * | 2019-09-09 | 2020-03-10 | 南京信息工程大学 | Multi-radiation-mode resonant antenna |
| CN112510364A (en) * | 2020-12-09 | 2021-03-16 | 华南理工大学 | OAM circular polarized antenna with reconfigurable mode and wireless communication equipment |
| CN113394558A (en) * | 2021-06-15 | 2021-09-14 | 南京邮电大学 | High-gain and low-RCS broadband circularly polarized super-surface antenna based on novel sequential rotation feed network |
-
2021
- 2021-12-28 CN CN202111628329.9A patent/CN114336021A/en active Pending
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060132359A1 (en) * | 2004-12-22 | 2006-06-22 | Tatung Co., Ltd. | Circularly polarized array antenna |
| CN105870623A (en) * | 2016-06-07 | 2016-08-17 | 电子科技大学 | Broadband circular polarization high-gain low-profile microstrip slot antenna capable of loading hyper-surface |
| CN109713437A (en) * | 2018-12-05 | 2019-05-03 | 北京遥测技术研究所 | A kind of wide-band high gain circular polarization microstrip antenna |
| CN109904605A (en) * | 2019-03-05 | 2019-06-18 | 电子科技大学 | Wideband Polarization Reconfigurable Antenna and High Performance Antenna Array Based on Hybrid HIS |
| CN110444864A (en) * | 2019-08-02 | 2019-11-12 | 华南理工大学 | A kind of super-wide band high-gain millimeter wave differential feed encapsulating antenna |
| CN210137010U (en) * | 2019-09-09 | 2020-03-10 | 南京信息工程大学 | Multi-radiation-mode resonant antenna |
| CN112510364A (en) * | 2020-12-09 | 2021-03-16 | 华南理工大学 | OAM circular polarized antenna with reconfigurable mode and wireless communication equipment |
| CN113394558A (en) * | 2021-06-15 | 2021-09-14 | 南京邮电大学 | High-gain and low-RCS broadband circularly polarized super-surface antenna based on novel sequential rotation feed network |
Non-Patent Citations (1)
| Title |
|---|
| 编辑部编: "《中国工程物理研究院科技年报 2006》", 31 January 2008, 原子能出版社, pages: 254 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115173068A (en) * | 2022-07-20 | 2022-10-11 | 华南理工大学 | Broadband circularly polarized substrate integrated waveguide horn antenna array and wireless communication equipment |
| CN115173051A (en) * | 2022-08-01 | 2022-10-11 | 曲阜师范大学 | Broadband high-gain circularly polarized antenna array |
| CN115173051B (en) * | 2022-08-01 | 2023-08-15 | 曲阜师范大学 | A Broadband High Gain Circularly Polarized Antenna Array |
| CN115347359A (en) * | 2022-08-19 | 2022-11-15 | 曲阜师范大学 | Broadband high-gain circularly polarized magnetoelectric dipole antenna array |
| CN115347359B (en) * | 2022-08-19 | 2023-08-15 | 曲阜师范大学 | A Broadband High Gain Circularly Polarized Magnetoelectric Dipole Antenna Array |
| GB2624105A (en) * | 2022-09-28 | 2024-05-08 | Novocomms Ltd | Meta-surface reconfigurable antenna array |
| GB2624105B (en) * | 2022-09-28 | 2025-01-29 | Novocomms Ltd | Meta-surface reconfigurable antenna array |
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