具有可调谐元件耦合的毫米波天线阵列增强扫描能力

IF 3.6 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC
Maximilian Döring;Thomas Frey;Dominik Schwarz;Felix Matt;Christian Waldschmidt;Tobias Chaloun
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引用次数: 0

摘要

相控阵系统已成为许多通信和传感器应用中不可或缺的一部分。尽管在抑制扫描盲方面取得了进展,但现有方法缺乏自适应特性来提高特定频率角对的辐射效率。本文介绍了一种具有新型电子可调谐耦合电路的双极化堆叠贴片天线,使相邻单元之间的耦合机制能够自适应控制。无限阵列仿真证明了将变容二极管集成到耦合电路中的优点,提高了离散频率角对的辐射效率。此外,通过对相邻单元胞的耦合机制进行自适应控制,实现了额外的设计自由度。实现了一个$11\ × 11$的演示天线,验证了全波仿真结果。测量结果与仿真结果吻合较好。通过远场测量,证明了电子可调谐耦合电路的影响,提高了27.5 GHz和31.5 GHz频率下的扫描效率。对于27.5 GHz的两个主平面,测量到的增益至少提高了2db,而在31.5 GHz的e平面,在$\pm {\ mathm {60~ {^{\circ}}}}$范围内的扫描衰减可以得到缓解。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
A Millimeter-Wave Antenna Array With Tunable Element Coupling for Enhanced Scan Capabilities
Phased array systems have become an integral part of many communication and sensor applications. Despite advancements in suppressing scan blindness, existing methods lack adaptive features to enhance radiation efficiency for specific frequency-angle pairs. In this article, a dual-polarized stacked patch antenna with a novel electronically tunable coupling circuit is introduced, enabling adaptive control of the coupling mechanism between adjacent unit cells. An infinity array simulation demonstrates the advantages of integrating varactor diodes into the coupling circuit, enhancing the radiation efficiency for discrete frequency-angle pairs. Furthermore, additional degree of design freedom is achieved through the adaptive control of the coupling mechanism of adjacent unit cells. An $11\times 11$ demonstrator antenna is realized to validate the full-wave simulation results. The measurement results are in good agreement with the simulations. Through far-field measurements the impact of the electronically tunable coupling circuit is demonstrated, enhancing the scan efficiency at frequencies of 27.5 GHz and 31.5 GHz. For both principal planes at 27.5 GHz, a measured gain improvement of at least 2 dB is achieved, while in the E-plane at 31.5 GHz, the onset of a scan degradation within the range of $\pm {\mathrm {60~ {^{\circ}}}}$ can be mitigated.
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来源期刊
CiteScore
6.50
自引率
12.50%
发文量
90
审稿时长
8 weeks
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