开发用于高效低功率电磁能量采集的偏振中性超材料吸收器

IF 4.1 3区工程技术 Q2 ENGINEERING, ELECTRICAL & ELECTRONIC

Sensors and Actuators A-physical Pub Date : 2024-11-22 DOI:10.1016/j.sna.2024.116055

M. Amiri , M. Abolhasan , N. Shariati , J. Lipman

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引用次数: 0

摘要

由于电磁信号的功率极低，使用电磁（EM）能运行物联网设备需要高效的能量收集器。将电磁波转换为直流输出的主要障碍在于为非线性整流设备提供足够的能量。本研究介绍了一种异常有效的超材料完美吸收器（MPA），其特点是在面对不同极化和入射角度的电磁波时具有稳定的吸收特性。利用共面波导（CPW）结构，设计了一种宽带全波整流器，将吸收的能量转换为直流输出。整流器的带宽超过 5 GHz，效率最高可达 65%。与能量收集器表面的平均可用功率相比，与每个整流器相关的较大接收器孔径可带来 7.8 dBm 的功率增益。完成的结构已经制造出来，模拟结果和测量结果之间的良好一致性证实了设计过程的有效性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Development of a polarization-neutral metamaterial absorber for efficient low-power EM energy harvesting

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Development of a polarization-neutral metamaterial absorber for efficient low-power EM energy harvesting

Using electromagnetic (EM) energy to run IoT devices requires a highly efficient energy harvester due to the extremely low-power EM signals. The primary obstacle in converting electromagnetic waves into a DC output lies in supplying adequate energy for non-linear rectification devices. This study introduces an exceptionally effective metamaterial perfect absorber (MPA) characterized by stable absorption properties when confronted with waves of varying polarization and incident angles. A wideband full-wave rectifier has been designed to convert absorbed energy to DC output, benefiting the coplanar waveguide (CPW) structure. The rectifier shows more than 5 GHz bandwidth with a maximum of 65% efficiency. The larger receiver aperture associated with each rectifier leads to a 7.8 dBm power gain compared to the average available power at the surface of the energy harvester. The completed structure has been manufactured, and the robust agreement between the simulated and measured outcomes confirms the validity of the design process.

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来源期刊

Sensors and Actuators A-physical 工程技术-工程：电子与电气

CiteScore

8.10

自引率

6.50%

发文量

630

审稿时长

49 days

期刊介绍： Sensors and Actuators A: Physical brings together multidisciplinary interests in one journal entirely devoted to disseminating information on all aspects of research and development of solid-state devices for transducing physical signals. Sensors and Actuators A: Physical regularly publishes original papers, letters to the Editors and from time to time invited review articles within the following device areas: • Fundamentals and Physics, such as: classification of effects, physical effects, measurement theory, modelling of sensors, measurement standards, measurement errors, units and constants, time and frequency measurement. Modeling papers should bring new modeling techniques to the field and be supported by experimental results. • Materials and their Processing, such as: piezoelectric materials, polymers, metal oxides, III-V and II-VI semiconductors, thick and thin films, optical glass fibres, amorphous, polycrystalline and monocrystalline silicon. • Optoelectronic sensors, such as: photovoltaic diodes, photoconductors, photodiodes, phototransistors, positron-sensitive photodetectors, optoisolators, photodiode arrays, charge-coupled devices, light-emitting diodes, injection lasers and liquid-crystal displays. • Mechanical sensors, such as: metallic, thin-film and semiconductor strain gauges, diffused silicon pressure sensors, silicon accelerometers, solid-state displacement transducers, piezo junction devices, piezoelectric field-effect transducers (PiFETs), tunnel-diode strain sensors, surface acoustic wave devices, silicon micromechanical switches, solid-state flow meters and electronic flow controllers. Etc...