Dual layer stacked rectangular microstrip patch antenna for ultra wideband applications
Dual layer stacked rectangular microstrip patch antenna for ultra wideband applications
复制标题
DOI：
10.1049/iet-map:20070051
复制
发表时间：
2007-12
影响因子：
1.7
通讯作者：
M. Matin;B. Sharif;C. Tsimenidis
中科院分区：
文献类型：
--
作者：
M. Matin;B. Sharif;C. Tsimenidis
提出了一种由一个U形开槽矩形微带贴片与另一个不同尺寸的贴片堆叠在一个单独的层上组成的天线，并对其性能进行了研究。基于扩展腔体模型，给出了这种叠层贴片设计结构的等效电路模型，以预测输入阻抗。从该电路模型的理论输入阻抗评估和实验结果支持的模型的有效性。在这种情况下，用简单的贴片堆叠增加了天线的另一个谐振，从而提供了更宽的带宽。顶部贴片的尺寸被优化以实现超宽带宽。该结构的最大阻抗带宽为56.8%，回波损耗|S11|在3.06 ~ 5.49 GHz之间，天线的辐射方向图小于-10 dB，在整个频带内辐射方向图相对恒定。该天线采用高斯调制脉冲同轴馈电。
An antenna consisting of a U-slotted rectangular microstrip patch stacked with another patch of a different size on a separate layer is presented and its performance results are investigated. An equivalent circuit model of this stacked patch design structure is also presented based on an extended cavity model to predict the input impedance. The theoretical input impedance is evaluated from this circuit model and the experimental results support the validity of the model. In this case, stacking with a simple patch adds another resonance to the antenna thus providing a wider bandwidth. The dimension of the top patch is optimised to achieve ultra wide bandwidth. A maximum impedance bandwidth of 56.8% is achieved using this structure, and the return loss |S11| of the antenna is less than –10 dB between 3.06 and 5.49 GHz and the radiation patterns are found to be relatively constant throughout the band. A coaxial feed with Gaussian modulated pulse is used for this antenna.