Double U-Shaped Slots Loaded Stacked Patch Antenna for Multiband Operation

The design of a seven-band stacked patch antenna for the C, X and Ku band is presented. The antenna consists of an H-slot loaded fed patch, stacked with dual U-slot loaded rectangular patch to generate the seven frequency bands. The total size of the antenna is 39.25 × 29.25 mm2. The multiband stacked patch antenna is studied and designed using IE3D simulator. For verification of simulation results, the antenna is analyzed by circuit theory concept. The simulated return loss, radiation pattern and gain are presented. Simulated results show that the antenna can be designed to cover the frequency bands from (4.24 GHz to 4.50 GHz, 5.02 GHz to 5.25 GHz) in C-band application, (7.84 GHz to 8.23 GHz) in X-band and (12.16 GHz to 12.35 GHz, 14.25 GHz to 14.76 GHz, 15.25 GHz to 15.51 GHz, 17.52 GHz to 17.86 GHz) in Ku band applications. The bandwidths of each band of the proposed antenna are 5.9%, 4.5%, 4.83%, 2.36%, 3.53%, 1.68% and 1.91%. Similarly the gains of the proposed band are 2.80 dBi, 4.39 dBi, 4.54 dBi, 10.26 dBi, 8.36 dBi and 9.91 dBi, respectively.

一种短路加载层叠式双频双极化微带天线

结合经典公式、模式展开理论以及HFSS软件仿真优化,设计了一种短路加载层叠式双频双极化微带天线。该天线采用双层贴片构架,引入电感分量L的短路加载等措施,有效展宽了天线频带宽度。基于项目需求,设计、加工了一套天线。测试结果表明,该天线在L频段(1.65～1.75 GHz),相对阻抗带宽约6%(VSWR≤2),带内增益大于8.2 dBi;在C频段(3.40～4.20 GHz),相对阻抗带宽约21%(VSWR≤2),带内增益大于7.5 dBi。可见,所提分析方法简明有效,可供同类型双层或多层微带天线借鉴。