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On-line Access: 2022-10-24

Received: 2022-03-27

Revision Accepted: 2022-05-29

Crosschecked: 2022-10-24

Cited: 0

Clicked: 258

Citations:  Bibtex RefMan EndNote GB/T7714

 ORCID:

Yuyan CAO

https://orcid.org/0000-0003-3360-7450

Zijun GUO

https://orcid.org/0000-0001-9139-310X

Zhangcheng HAO

https://orcid.org/0000-0002-1835-7652

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Frontiers of Information Technology & Electronic Engineering  2022 Vol.23 No.10 P.1568-1578

http://doi.org/10.1631/FITEE.2200122


Planar dual-polarized millimeter-wave shared-aperture array antenna with high band isolation


Author(s):  Yuyan CAO, Zijun GUO, Zhangcheng HAO

Affiliation(s):  State Key Lab of Millimeter Waves, School of Information Science and Engineering, Southeast University, Nanjing 210096, China; more

Corresponding email(s):   yuyancao@aa.seu.edu.cn, zjguo@seu.edu.cn, zchao@seu.edu.cn

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Yuyan CAO, Zijun GUO, Zhangcheng HAO. Planar dual-polarized millimeter-wave shared-aperture array antenna with high band isolation[J]. Frontiers of Information Technology & Electronic Engineering, 2022, 23(10): 1568-1578.

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Abstract: 
A planar millimeter-wave shared-aperture array antenna is proposed and designed in this paper. By composing the substrate integrated waveguide (SIW) and the stripline, the K-band antenna is embedded inside the Ka-band antenna to achieve a smaller size and a low profile by sharing an aperture. The Ka-band antenna radiates through the parallel slot pairs on the surface of the SIW cavities with horizontal polarization, while the K-band antenna radiates through the butterfly-shaped slots with vertical polarization, which are also designed on the surface. Then the two array antennas can radiate by sharing a common aperture with high isolation. To verify this idea, a prototype of an 8×8 shared-aperture array antenna has been designed with center frequencies of 19 and 30 GHz and fabricated using multilayer printed circuit board (PCB) technology. The measurement results show that the −10 dB impedance bandwidths in the K- and Ka-bands are 7.73% and >20%, and the corresponding isolations are higher than 60 and 44 dB, respectively. The proposed shared-aperture antenna has a small footprint, a low profile, and high isolation, and is a promising candidate to design compact millimeterwave wireless systems.

具有高隔离度的毫米波平面双极化共口径阵列天线

曹羽艳1,郭子均1,郝张成1,2,3
1东南大学信息科学与工程学院毫米波国家重点实验室,中国南京市,210096
2东南大学移动信息通信与安全前沿科学中心,中国南京市,210096
3紫金山实验室,中国南京市,211111
摘要:本文提出并设计了一种毫米波平面共口径阵列天线。通过集成基板集成波导(SIW)和带状线激励网络,将K波段天线嵌入至Ka波段天线内部。通过共享辐射口径减小天线尺寸,降低其剖面高度。所设计的Ka波段天线通过SIW腔体表面的一对平行缝隙辐射水平极化波,而K波段天线通过SIW腔体表面的蝴蝶结形缝隙辐射垂直极化波。两个波段的阵列天线可以共享物理口径进行辐射,且在两个频段都具有很好的隔离度。为了验证以上设计思想,我们设计了一款中心工作频率为19 GHz和30 GHz的8×8共口径阵列天线,并采用多层印刷电路板(PCB)技术进行加工制造。实测结果表明,该天线在K波段和Ka波段的−10 dB阻抗带宽分别为7.73%和大于20%,相应的隔离度分别高于60 dB和44 dB。所提出的共口径天线具有小尺寸、低剖面和高隔离度的优点,可应用于小型化毫米波无线通信系统。

关键词:共口径;平面天线;高隔离度;基片集成波导

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