A Wideband and High-Gain Filtering Antenna for 5G Millimeter-Wave Applications
A Wideband and High-Gain Filtering Antenna for 5G Millimeter-Wave Applications
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DOI：
10.1109/tap.2023.3298506
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发表时间：
2023-11
影响因子：
5.7
通讯作者：
Y. Pan;Gui Liu;Xiyao Liu;K. Leung;P. Hu
中科院分区：
文献类型：
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作者：
Y. Pan;Gui Liu;Xiyao Liu;K. Leung;P. Hu
提出了一种用于5G应用的宽带和高增益毫米波（mm波）滤波天线。该天线主要由一个带矩形缝隙的基片集成波导（SIW）腔体、四个带金属通孔的矩形贴片和一个寄生带组成。由于缝隙的扰动，基片集成波导腔能够在通带内产生两个谐振模，同时在下带边产生一个辐射零点。通孔加载贴片可以产生额外的谐振模式，以增加工作带宽，并进一步增强天线的带内增益。此外，寄生带可以在通带中提供第四谐振，同时，由于其与矩形贴片的相互作用，在上带边处产生另一个辐射零点。因此，实现了准椭圆带通滤波响应，沿着具有增强的阻抗带宽和滤波增益。为了演示，制造并测量了在5G mm波段工作的原型。该原型的阻抗带宽为18.4%，平均增益为10.1 dBi，阻带内的带外抑制水平约为20 dB。
A wideband and high-gain millimeter-wave (mm-wave) filtering antenna is proposed for 5G applications. The antenna mainly consists of a substrate-integrated waveguide (SIW) cavity with a rectangular slot, four identical rectangular patches with metallic vias, and a parasitic strip. Due to the perturbation of the slot, the SIW cavity is able to generate two resonant modes in the passband and simultaneously a radiation null at the lower bandedge. The via-loaded patch can generate an additional resonant mode to increase the operating bandwidth and further enhance the in-band gain of the antenna. In addition, the parasitic strip can offer the fourth resonance in the passband and, in the meantime, generate another radiation null at the upper bandedge due to its interaction with the rectangular patches. Consequently, a quasi-elliptic bandpass filtering response is achieved, along with enhanced impedance bandwidth and boresight gain. For demonstration, a prototype operating in the 5G mm-wave band is fabricated and measured. The prototype shows an impedance bandwidth of 18.4%, an average gain of 10.1 dBi, and an out-of-band suppression level of about 20 dB in the stopbands.