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The Antenna Complex

The Antenna Complex

Plants and other photosynthetic organisms comprise pigments capable of absorption of direct sunlight. These pigments are present in the reaction center - the main site of photochemical reactions as well as in the antenna complex. Under average light conditions, the rate at which reaction center pigments absorb light is far below the electron transport chain's capacity. As a result, the reaction center alone cannot provide enough energy to drive photosynthesis. The photosynthetic efficiency...

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Updated: Jul 12, 2025

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Large Scale Energy Efficient Sensor Network Routing Using a Quantum Processor Unit

Published on: September 8, 2023

一个紧的射频能量采集无线传感器节点与能量强度自适应管理算法.

Xiaoqiang Liu¹, Mingxue Li¹, Xinkai Chen¹

¹School of Aeronautics, Harbin Institute of Technology, Harbin 150001, China.

Sensors (Basel, Switzerland)

|October 28, 2023

概括

本研究介绍了一种用于收获射频能量的紧型无线传感器节点 (WSN). 它实现了高达13.4m的自动供电操作,展示了有效的能源管理,以扩展功能.

关键词:

收获RF能量收获RF能量收获 WSN WSN 在线新闻网紧的设计,紧的设计.能源管理能源管理这是Rectenna.

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Effective Analysis of Human Exposure Conditions with Body-worn Dosimeters in the 2.4 GHz Band

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Last Updated: Jul 12, 2025

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科学领域:

电气工程电气工程
无线通信无线通信
收集能源收集能源

背景情况:

无线传感器节点 (WSN) 传统上需要外部电源或频繁更换电池.
高效的射频 (RF) 能量采集对于实现自动供电的WSN至关重要.
微型化WSN组件对于各种应用中的实际部署至关重要.

研究的目的:

设计和演示一个紧的,集成的RF能量收获WSN.
提高天线性能和整流器效率,以有效捕获能量.
开发一种自适应的能源管理算法,以优化在不同射频功率条件下的WSN运行.

主要方法:

在单个印刷电路板 (PCB) 上集成天线,整流器和能源管理电路.
在辐射补丁中使用蚀刻的矩形槽进行天线小型化.
开发一种基于输入能量强度的双模式能源模型和自适应管理算法.
天线参数 (S11,增益) 和整流器效率 (RF到DC转换) 的表征.

主要成果:

制造了一个紧的WSN,尺寸为53mm × 59.77mm × 4.5mm.
该天线在2.437 GHz实现了 -24.9 dB的S11,最大增益为4.8 dBi.
整流器在7dBm的输入功率下显示了52.53%的高峰射频-直流转换效率.
在距离发射机13.4米的距离上实现了自动供电的操作.
适应性管理算法有效区分操作模式和优化能源管理.

结论:

拟议的紧型射频能量采集WSN可在偏远地区实现自动供电运行.
综合设计和自适应能源管理战略提高了WSN的效率和可靠性.
这项技术为可持续的长期无线传感应用提供了可行的解决方案.