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Frontiers of Information Technology & Electronic Engineering
ISSN 2095-9184 (print), ISSN 2095-9230 (online)
2022 Vol.23 No.2 P.339-345
A compact ultra-wideband crossed-dipole antenna for 2G/3G/4G/IMT/5G customer premise equipment applications
Abstract: A compact ultra-wideband crossed-dipole antenna is proposed for 2G/3G/4G/IMT/5G customer premise equipment (CPE) applications. The arms of the crossed-dipole antenna are formed by step-shaped patches, and a wideband operation can be realized by properly selecting the order of the step-shaped patches; its bandwidth can be further enhanced by extending the end of crossed dipole downward. Each dipole is excited by a microstrip stub that is directly connected to a coaxial cable. Furthermore, a slotted rectangular parasitic patch is added beneath the crossed dipoles to further support a 5G sub-6-GHz band without additional space cost. The test results for the prototype of the proposed antenna show that the crossed-dipole antenna has a bandwidth of 147.3% (0.77–5.07 GHz) for return loss lower than 10 dB and an isolation higher than 20 dB between two ports.
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1西安电子科技大学天线与微波技术重点实验室，中国西安市，710071
2华为技术公司，中国西安市，710075
摘要：设计了一种用于用户端设备（CPE）且工作在2G/3G/4G/IMT/5G频段的小型化超宽带交叉振子天线。单个交叉振子的双臂由阶梯型枝节组成，天线的带宽不但能够通过选择阶梯型枝节的阶数来控制，还可以通过延伸枝节末端来展宽。偶极子通过连接在同轴线上的微带枝节来馈电。此外，通过在交叉振子下方增加开缝的寄生贴片，天线整体的带宽能够扩展到5G sub-6 GHz频段。此外，对天线结构进行了加工和测试。结果表明天线的10 dB相对带宽为147.3%（0.77–5.07 GHz），双端口之间的隔离度优于20 dB。
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DOI:
10.1631/FITEE.2000456
CLC number:
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On-line Access:
2022-02-28
Received:
2020-09-03
Revision Accepted:
2022-04-22
Crosschecked:
2021-05-26