ID |
原文 |
译文 |
13694 |
针对微带天线的带内和带外雷达散射截面 (radar cross section, RCS) 减缩问题, 提出了一种加载组合梯度超表面的低RCS天线设计方法, 以解决传统RCS减缩技术存在的带宽受限和设计复杂问题。 |
In regard of in-band and out-band radar cross section (RCS) reduction of microstrip antenna, a method for designing low RCS antenna based on combinatorial gradient metasurface is proposed, which can release the issue about bandwidth limited and design complexity of the conventional technology. |
13695 |
该方法将8个梯度方向间隔45°的梯度超单元依次排列在辐射贴片的周围, 由于梯度超单元的奇异反射特性, 散射场将会被重新分布至各个方向, 表现出漫反射效果, 从而实现单站和双站的RCS减缩。 |
The low RCS microstrip antenna is designed by distributing eight kinds of gradient supercells around radiation patch, the supercells have different gradient directions with an interval of 45°. Due to the anomalous reflection property of the gradient supercell, the scattered field is redistributed into various directions and performs like diffusion phenomenon. Therefore, both monostatic RCS and bistatic RCS can be suppressed. |
13696 |
仿真和测试结果表明:加载组合梯度超表面前后微带天线的RCS在7.2~18.4GHz减缩了5dB以上, 且微带天线原有的辐射特性基本保持不变。 |
The simulated and measured results show that the RCS is reduced by more than 5 dB within 7.2-18.4 GHz as well as the radiation performance was maintained after loading the combinatorial gradient metasurfaces. |
13697 |
该设计方法具有设计简单、超宽带工作的特点。 |
The design approach features properties such as design convenience and ultra-wideband operation. |
13698 |
提出了一种面向5G的宽带8端口多输入多输出 (multiple-input multiple-output, MIMO) 天线。 |
A wideband 8-port multiple-input multiple-output (MIMO) antenna for 5G is proposed. |
13699 |
天线单元采用多枝节单极子结构, 能够激发多模态, 且能覆盖多频段。 |
The antenna element is a multi-branch monopole.Its structure can yield multiple modes to cover multiple bands. |
13700 |
同时, 采用弯折结构来实现小型化, 且在相邻单元之间设计T形突出地结构来提高隔离度。 |
A folded structure is also employed to achieve antenna miniaturization.To enhance isolation, Tshaped protruded ground structures are designed and embedded between the adjacent antenna elements. |
13701 |
仿真和实测结果显示, 该天线在3~7.1GHz内回波损耗大于10dB, 在3.3~7.1GHz内隔离度高于15dB。 |
The simulated and measured results indicate that the return loss of the proposed antenna is larger than 10 dB in the 3—7.1 GHz band, and the isolation is higher than 15 dB in the 3.3—7.1 GHz band. |
13702 |
因为进行了有效的去耦, 天线体现出明显的辐射分集特性, 天线在目标sub-6GHz频段内的包络相关系数 (envelope correlation coefficient, ECC) 接近0.在一8×8MIMO系统中, 计算得到的峰值遍历信道容量为43bps/Hz, 达到传统2×2 MIMO上限值的3.74倍。 |
Benefitting from effective decoupling, the proposed antenna shows distinct radiation diversity characteristic.The envelope correlation coefficient (ECC) of the proposed antenna is close to zero in the targeted sub-6 GHz bands.The calculated peak ergodic channel capacity in an 8×8 MIMO system is 43 bps/Hz, reaching up to 3.74 times of the upper limit for conventional 2×2 MIMO. |
13703 |
该8单元MIMO天线具有良好的分集和复用能力, 能满足5G通信在sub-6GHz的高速数据传输需要。 |
The proposed 8-port MIMO antenna has good diversity and multiplexing capabilities, and it is competent for high-speed data transmission for the 5G communication in the sub-6 GHz bands. |