摘要
介绍了一种可应用于C波段的耦合微带贴片天线.微带贴片天线的辐射贴片形状多种多样并且对天线的各项性能具有重要影响.通过改变辐射贴片形状,设计等面积正六边形、三角形、圆形3种常规贴片天线并分析比较了贴片形状对于天线性能的影响.所设计的天线采用叠层结构和微带线耦合馈电,使得天线的性能有明显的改善.采用基于有限积分法的CST Microwave Studio电磁仿真环境分析不同贴片形状天线的性能,比较了中心频率、回波损耗、带宽及相对带宽、增益和方向性系数等参数.通过仿真,3种贴片天线都存在带宽较窄的问题,这是由于微带天线本身高Q值的特点导致的.相对于其他两种贴片,正六边形微带贴片天线的带宽最宽,辐射性能最佳.
This paper introduced a coupled microstrip patch antenna which can be applied to C-band. The shapes of radiation patch of microstrip patch antenna are various and play an important role on the performance of the antenna. In this paper, microstrip patch antenna with conventional shapes like regular hexagon, triangle and circle of equal area are designed and analyzed. The designed antenna with laminated structure is fed with a microstrip line, significantly improving the performance of the antenna. The CST Microwave Studio simulation environment based on the finite integral method is is used to analyze the performance of different patch antenna. The parameters such as center frequency, return loss, bandwidth and relative bandwidth, gain and directivity coefficient are analyzed. Based on the simulation environment, the three patch antennas have the same problem of narrow bandwidth, which is due to the characteristics of the high-Q antenna itself. Compared with the other two patches, the coupled microstrip antenna with hexagonal patch has the widest bandwidth and the best radiation performance.
出处
《河北工业大学学报》
CAS
2017年第6期1-5,59,共6页
Journal of Hebei University of Technology
基金
国家自然科学基金(61671200)
