Synthesis and Design of 3-D Microwave Absorber With 70° Angular Stability for C-Band and X-Band

IF 3.5 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

IEEE Open Journal of Antennas and Propagation Pub Date : 2024-04-22 DOI:10.1109/OJAP.2024.3391799

Tian-Xi Feng;Lei Zhu;Hui Li

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引用次数: 0

Abstract

This article presents the synthesis and design of 3-D microwave absorber with 70° angular stability for C-band and X-band. The operating principle is firstly investigated, where the absorber is considered as an energy convertor. With the help of our proposed universal equivalent transmission line (TL) model, the absorptive performance can be accordingly synthesized. Then, a design method for efficient absorption under large angles is presented. By selecting a proper synthesized angle (SA), the angular stability can be effectively improved. After that, the prototype with 70° angular stability is designed as an example with structural realization and practical implementation. Measurements agree well with synthesized and simulated results, successfully verifying the proposed design method. For specific C-band and X-band applications, the measured average absorption ratios (ARs) under normal incidence, 45° incidence, and 70° incidence are 94.2%, 94.0%, and 92.3%. Minimum measured ARs within the operating bandwidth are 88.4%, 81.5%, and 82.0% for normal, 45°, and 70° incidences. Besides, the proposed absorber element owns the advantage of simple structure with only one resistor. Such a class of microwave absorber is a potential candidate for wide coverage electromagnetic absorption.

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为 C 波段和 X 波段合成和设计具有 70∘ 角稳定性的三维微波吸收器

本文介绍了具有 70° 角稳定性的 C 波段和 X 波段三维微波吸收器的合成和设计。首先研究了吸收器的工作原理，吸收器被视为一个能量转换器。在我们提出的通用等效传输线（TL）模型的帮助下，吸收性能可以得到相应的综合。然后，介绍了大角度下高效吸收的设计方法。通过选择适当的合成角度（SA），可以有效提高角度稳定性。随后，以 70° 角稳定性原型为例，设计了结构实现和实际应用。测量结果与合成和模拟结果完全吻合，成功验证了所提出的设计方法。在特定的 C 波段和 X 波段应用中，正常入射角、45° 入射角和 70° 入射角下测得的平均吸收比（AR）分别为 94.2%、94.0% 和 92.3%。在正常入射角、45° 入射角和 70° 入射角下，工作带宽内的最小测量吸收比分别为 88.4%、81.5% 和 82.0%。此外，所提出的吸收元件结构简单，只有一个电阻器。这类微波吸收器是广覆盖电磁吸收的潜在候选器件。

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

IEEE Open Journal of Antennas and Propagation Multiple-

CiteScore

6.50

自引率

12.50%

发文量

审稿时长

8 weeks