Differentially Fed Planar Aperture Antenna With High Gain and Wide Bandwidth for Millimeter-Wave Application
Differentially Fed Planar Aperture Antenna With High Gain and Wide Bandwidth for Millimeter-Wave Application
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DOI：
10.1109/tap.2015.2389256
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发表时间：
2015-03-01
影响因子：
5.7
通讯作者：
Xue, Quan
中科院分区：
文献类型：
--
作者：
Liao, Shaowei;Wu, Peng;Xue, Quan
提出了一种新型的差分馈电平面口径天线。与传统的高增益口径天线（如喇叭天线和反射面天线）相比，它保持了高增益和宽带宽，但具有低得多的轮廓，只有一个四分之一波长的高度。由于毫米波（mmWave）波段的高度（λ（g）/4）与大多数市售叠层一样低，因此使用所提出的结构可以在mmWave波段实现具有高增益和宽带宽的平面孔径天线。采用标准印刷电路板（PCB）技术，在单层层压板上设计并制造了工作在60 GHz频段的原型。设计了一种基于E面三通的差动馈电网络，用于对样机进行馈电。实验结果表明，在56.2 ~ 69.7GHz的频率范围内，样机的阻抗带宽达到了-15dB（21.5%）。在60 GHz时，宽边的峰值增益为15.3 dBi。3 dB增益带宽为54.0至67.5 GHz（22.2%）。在工作带宽内，辐射方向图是稳定的，具有低于-24 dB的低交叉极化水平，并且关于E平面和H平面对称。
This paper presents a novel planar aperture antenna with differential feeding. Compared with conventional high-gain aperture antennas, such as horn and reflector antennas, it maintains a high gain and wide bandwidth, but has a much lower profile with only one quarter-wavelength height. Since the height (lambda(g)/4) at millimeter-wave (mmWave) band is as low as the most of the commercially available laminates, planar aperture antennas with high gain and wide bandwidth can be realized at mmWave band using the proposed structure. A prototype working at 60 GHz band was designed and fabricated on a single layer laminate using standard printed circuit board (PCB) technology. A differential feeding network based on E-plane tee was also designed to feed the prototype for the measurement purposes. Experiment results show that the prototype achieves a - 15-dB impedance bandwidth from 56.2 to 69.7 GHz (21.5%). The peak gain at broadside is 15.3 dBi at 60 GHz. The 3-dB gain bandwidth is from 54.0 to 67.5 GHz (22.2%). Within the operating bandwidth, the radiation pattern is stable with a low cross-polarization level below -24 dB, and is symmetrical about both the E- and H-planes.