A probe-fed stacked plate antenna with stub for CMMB terrestrial Single Frequency Network

S. Fang, Zhongbao Wang, Shiqiang Fu
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Abstract

A probe-fed stacked plate antenna with a stub is proposed for CMMB terrestrial Single Frequency Network (SNF) applications. The radiating plates, which act as typical radiators, are designed based on standard rules for designing conventional microstrip antennas. To obtain 50 Ohm impedance matching, a rectangular stub is attached to one of the radiating edges of the main plate and is coplanar with the main plate. By tuning the stub, the input resistance and reactance can be easily determined. This method is used to design a rectangular suspended probe-fed stacked plate antenna. Experimental results show that this design is capable of achieving a VSWR 1.1∶1 impedance bandwidth of about 7.5%, relatively stable radiation patterns, and a gain level of about 9.6 dBi. The high gain and low VSWR make it suitable for CMMB terrestrial SNF applications.
一种用于CMMB地面单频网络的带存根的探针馈电堆叠板天线
提出了一种用于CMMB地面单频网络(SNF)的带存根的探针馈电堆叠板天线。辐射板作为典型的辐射体,是根据设计传统微带天线的标准规则设计的。为了获得50欧姆的阻抗匹配,在主极板的一个辐射边缘上附加一个矩形短段,并与主极板共面。通过调整短管,可以很容易地确定输入电阻和电抗。利用该方法设计了一种矩形悬浮式探针馈电叠加板天线。实验结果表明,该设计能够实现1.1∶1的VSWR,阻抗带宽约为7.5%,辐射方向图相对稳定,增益水平约为9.6 dBi。高增益和低驻波比使其适用于CMMB地面SNF应用。
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