A Compact Cavity-Backed Endfire Slot Antenna
A Compact Cavity-Backed Endfire Slot Antenna
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DOI：
10.1109/lawp.2014.2304731
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发表时间：
2014-02
影响因子：
4.2
通讯作者：
Zhuozhu Chen;Z. Shen
中科院分区：
文献类型：
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作者：
Zhuozhu Chen;Z. Shen
这封信中提出了一种紧凑的端射缝隙天线，它在金属腔的顶部和底部宽壁上采用了两个薄基板。利用腔壁上适当位置蚀刻出的三个不同长度的槽来增强带宽并实现超增益端射辐射。设计的天线工作在5.8 GHz的中心频率。仿真结果表明，缝隙天线的阻抗带宽（dB）为5.51~6.08 GHz（9.8%），端射方向最大增益为8.4 dB。在感兴趣的带宽上增益纹波为 0.9 dB。所提出的带有集成老鼠竞赛馈送巴伦的天线原型已被制造和测试。测量结果与模拟结果非常吻合。
A compact endfire slot antenna is presented in this letter, which employs two thin substrates on both the top and bottom broad walls of a metallic cavity. Three slots with different lengths at suitable positions etched out of the cavity walls are utilized to enhance the bandwidth and achieve endfire radiation with supergain. The designed antenna operates at the center frequency of 5.8 GHz. Simulated results show that the slot antenna has an impedance bandwidth ( dB) from 5.51 to 6.08 GHz (9.8%) and a maximum gain of 8.4 dB in the endfire direction. The gain ripple is 0.9 dB over the bandwidth of interest. A prototype of the proposed antenna with an integrated rat-race feeding balun is fabricated and tested. Measured results are in good agreement with simulated ones.