A Seamless Integration of 3-D Vertical Filters With Highly Efficient Slot Antennas
A Seamless Integration of 3-D Vertical Filters With Highly Efficient Slot Antennas
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DOI：
10.1109/tap.2011.2164186
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发表时间：
2011-08
影响因子：
5.7
通讯作者：
Y. Yusuf;Haitao Cheng;X. Gong
中科院分区：
文献类型：
--
作者：
Y. Yusuf;Haitao Cheng;X. Gong
本文提出了一种三维垂直腔体滤波器与高效缝隙天线的无缝集成。这种集成技术实现了低损耗滤波，并减少了相控阵中的同址干扰。介绍了一种在X波段集成缝隙天线的垂直双极子腔体滤波器。该滤波器/天线系统的中心频率为10.16 GHz，分数带宽为3.0%。由于这种无缝集成实现了接近零的跃迁损耗，集成缝隙天线的效率高达97%。建立了用于识别滤波器/天线损耗的等效电路模型，并通过全波仿真进行了验证。测量的阻抗匹配和辐射方向图与仿真结果吻合较好。该技术可以扩展到与缝隙天线无缝集成的高阶滤波器。此外，该技术还可以应用于所有微波、毫米波和亚毫米波频段。
A seamless integration of 3-D vertical cavity filters with highly efficient slot antennas is presented herein. This integration technique enables low-loss filtering and reduces co-site interference within phased arrays. A vertical two-pole cavity filter integrated with a slot antenna is demonstrated at X band. The center frequency and fractional bandwidth of the filter/antenna system are 10.16 GHz and 3.0%, respectively. Due to the near-zero transition loss achieved by this seamless integration, the efficiency of the integrated slot antenna is shown to be as high as 97%. Equivalent circuit models are developed to identify the losses in the filter/antenna, which are verified by full-wave simulations. The measured impedance matching and radiation patterns closely agree with simulation results. This technique can be extended for higher-order filters seamlessly integrated with slot antennas. In addition, this technique can be applied in all microwave, millimeter-wave, and submillimeter-wave frequency regions.