Design of a Low Sidelobe Feed Network Based on the Louver-Shaped Defected Ground Structure

IF 1.2 4区计算机科学 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC

International Journal of Antennas and Propagation Pub Date : 2024-03-25 DOI:10.1155/2024/3452375

Zhang Yuan, Xi Songtao

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引用次数: 0

Abstract

In this paper, a low sidelobe feeding network has been developed utilizing the louver-shaped defected ground structure (DGS). By adjusting the louver-shaped DGS, the output amplitude and phase of the corresponding ports can be altered, minimizing deviations from theoretical values. This enables antenna arrays equipped with this feeding network to more easily achieve low sidelobe performance. The impact of the louver-shaped DGS on the amplitude and phase of each port in the power divider within the feeding network is analyzed, and a 16-channel feeding network incorporating the louver-shaped DGS has been designed, fabricated, and then measured. The test results indicate that the performance of the line-feeding network is effectively improved by designing and adjusting the louver-shaped DGS. Through the debugging procedure, the amplitude deviation of the feeding network has been reduced from ±0.45 dB to ±0.2 dB, while the phase deviation of the feeding network has been reduced from ±8° to ±2.5°, and the maximum value of the first sidelobe has been reduced from −24.2 dB to −28.1 dB.

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基于百叶窗形缺陷地面结构的低侧贝馈电网络设计

本文利用百叶窗形缺陷地面结构（DGS）开发了一种低侧叶馈电网络。通过调整百叶窗形 DGS，可以改变相应端口的输出振幅和相位，最大限度地减少与理论值的偏差。这样，配备这种馈电网络的天线阵列就能更容易地实现低侧叶性能。我们分析了百叶窗形 DGS 对馈电网络内功率分配器各端口振幅和相位的影响，并设计、制造和测量了一个包含百叶窗形 DGS 的 16 通道馈电网络。测试结果表明，通过设计和调整百叶窗形 DGS，馈电网络的性能得到了有效改善。通过调试程序，馈电网络的振幅偏差从 ±0.45 dB 减小到 ±0.2 dB，馈电网络的相位偏差从 ±8° 减小到 ±2.5°，第一个侧叶的最大值从 -24.2 dB 减小到 -28.1 dB。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Antennas and Propagation ENGINEERING, ELECTRICAL & ELECTRONIC-TELECOMMUNICATIONS

CiteScore

3.10

自引率

13.30%

发文量

158

审稿时长

3.8 months

期刊介绍： International Journal of Antennas and Propagation publishes papers on the design, analysis, and applications of antennas, along with theoretical and practical studies relating the propagation of electromagnetic waves at all relevant frequencies, through space, air, and other media. As well as original research, the International Journal of Antennas and Propagation also publishes focused review articles that examine the state of the art, identify emerging trends, and suggest future directions for developing fields.