A Novel Substrate-Integrated Suspended Line Stacked-Patch Antenna Array for WLAN
A Novel Substrate-Integrated Suspended Line Stacked-Patch Antenna Array for WLAN
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DOI：
10.1109/tap.2018.2826719
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发表时间：
2018-07-01
影响因子：
5.7
通讯作者：
Zhang, Haobin
中科院分区：
文献类型：
--
作者：
Yan, Ningning;Ma, Kaixue;Zhang, Haobin
提出了一种基于基板集成悬线技术的新型堆叠贴片天线。该天线设计为使用带有嵌入式气腔的五个基板层进行自封装。利用过孔将天线驱动贴片与馈线连接，然后产生 5.2 GHz 的谐振频率。天线驱动贴片上蚀刻有 U 形槽，用于阻抗匹配。为了进一步扩展阻抗带宽，引入了带有斜槽的堆叠贴片，然后产生了另一个6.2 GHz的谐振频率。根据测量结果，天线元件在5.2至6.2 GHz范围内实现了17.5%的分数带宽和9.7 dBi的增益。基于天线单元，提出了带馈电网络的八单元天线阵列。在馈电网络中引入微带槽线巴伦，实现等幅180度相位差，从而实现对称辐射图。所提出的天线阵列的仿真和测量结果非常吻合。在5.28至6.05 GHz频段，天线增益达到16.24 dBi，增益平坦度变化为1.5 dB。此外，自封装天线阵列的前后比优于20dB。
A novel stacked-patch antenna based on substrate-integrated suspended line technology is proposed. The antenna is designed to be self-packaged using five substrate layers with embedded air cavities. Via is utilized to connect the antenna driven patch with the feed line, and then resonant frequency at 5.2 GHz is generated. U-shaped slot is etched on the antenna driven patch for impedance matching. In order to further extend the impedance bandwidth, a stacked patch with slant slot is introduced and then another resonant frequency at 6.2 GHz is produced. According to the measured results, the antenna element achieves a fractional bandwidth of 17.5% from 5.2 to 6.2 GHz and gain of 9.7 dBi. Based on the antenna element, the eight-element antenna array with feeding network is presented. The microstrip-slotline balun is introduced in the feeding network to achieve 180 degrees phase difference with equal amplitude so that symmetrical radiation patterns are achieved. Simulation and measurement results for the proposed antenna array are in good agreement. In the frequency band from 5.28 to 6.05 GHz, antenna gain of 16.24 dBi with gain flatness variation of 1.5 dB is achieved. In addition, the front-to-back ratio of the self-packaged antenna array is better than 20 dB.