Design and development of cheap and eco-friendly microwave absorber are one of the challenging and interesting topics for the scientific community nowadays. This paper proposes the design and fabrication of corn husk-based low cost, light-weight, and flexible microwave absorber treated as a promising eco-friendly microwave absorber. In this work, an extensive study on microwave absorption efficiency of corn husk at different thicknesses is performed in the frequency range of 1–20 GHz. The absorber at 5.21 mm thickness possesses a return loss (RL) of −32.72247 dB at 2.255 GHz. The measured RL values agree well with simulated ones, indicating the utility of proposed absorber for various practical microwave absorption applications.

中文翻译：

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有机玉米壳基平面微波吸收器的研究

设计和开发廉价且环保的微波吸收器是当今科学界具有挑战性和有趣的课题之一。本文提出了基于玉米壳的低成本、重量轻、柔性的微波吸收器的设计和制造，被视为一种有前途的环保型微波吸收器。在这项工作中，在 1-20 GHz 的频率范围内对不同厚度的玉米壳的微波吸收效率进行了广泛的研究。5.21 mm 厚度的吸收器在 2.255 GHz 时的回波损耗 (RL) 为 -32.72247 dB。测得的 RL 值与模拟值非常吻合，表明所提出的吸收器在各种实际微波吸收应用中的实用性。