在双模共振下使用双频段曲感应织天线
Zi-Qiang Liu1, Nuo Chen1, Ke Ma1
1Jiangsu Key Laboratory of Wireless Communications and Internet-of-Things, Nanjing University of Posts and Telecommunications, Nanjing 210003, China.
Sensors (Basel, Switzerland)
|December 31, 2025
概括
这项研究引入了一种用于曲传感的新型双频段织天线,在2.45GHz和5.8GHz的工业,科学和医疗 (ISM) 频段工作. 灵活的天线提供双模式共振,用于增强可穿戴应用中的传感.
科学领域:
- 电气工程 电气工程
- 材料科学 材料科学 材料科学
- 可穿戴技术可穿戴技术
背景情况:
- 织天线对于可穿戴电子产品和灵活的通信系统至关重要.
- 现有的曲传感器天线经常受到单模共振的影响,限制了它们的传感能力.
- 工业,科学和医疗 (ISM) 频段 (2.45 GHz和5.8 GHz) 广泛用于无线应用.
研究的目的:
- 设计和验证用于曲传感应用的双模式共振,双频段织微条纹补丁天线.
- 为了研究天线的性能特征,包括带宽,增益和曲条件下的传感灵敏度.
- 评估天线是否适用于射频识别 (RFID) 和健康监测等应用.
主要方法:
- 在织天线设计中采用了裂的圆形部门补丁配置.
- 该天线是在法兰基板上制造的,以提高灵活性和可穿戴性.
- 进行了实验测量,以评估阻抗带宽,峰值增益和2.45GHz和5.8GHz的曲传感灵敏度.
- 在曲的条件下分析了辐射模式.
主要成果:
- 拟议的天线实现了覆盖2.45GHz和5.8GHzISM频段的双频段操作.
- 对于各自的频段,记录了1.4%和2.4%的阻抗带宽.
- 实现了8.8dBi和9.1dBi的最大峰值增益.
- 1.1 MHz/mm和1.78 MHz/mm的曲传感灵敏度在2.45 GHz和5.8 GHz时经过实验验证.
- 稳定的E平面宽侧辐射模式在曲的情况下保持不变.
结论:
- 双模共振设计使织天线具有独特的双频传感特征.
- 天线显示出出色的性能指标,包括显著的增益和高曲灵敏度.
- 拟议的天线是先进的可穿戴应用的有希望的候选人,包括RFID,健康监测和灵活的通信.
相关概念视频
01:23Parallel Resonance
491
The parallel RLC circuit is an arrangement where the resistor (R), inductor (L), and capacitor (C) are all connected to the same nodes and, as a result, share the same voltage across them. The parallel RLC circuit is analyzed in terms of admittance (Y), which reflects the ease with which current can flow. The admittance is given by:
491
01:12Double Resonance Techniques: Overview
662
Double resonance techniques in Nuclear Magnetic Resonance (NMR) spectroscopy involve the simultaneous application of two different frequencies or radiofrequency pulses to manipulate and observe two distinct nuclear spins. One important application of double resonance is spin decoupling, which selectively suppresses coupling with one type of nucleus while observing the NMR signal from another nucleus, simplifying the spectrum and enhancing resolution.
Spin decoupling is usually achieved by...
Spin decoupling is usually achieved by...
662
01:24Characteristics of Series Resonant Circuit
537
Series resonance occurs in a circuit containing inductive (L), capacitive (C), and resistive (R) elements connected sequentially. At the resonance frequency, the inductive and capacitive reactances are equal in magnitude but opposite in sign, effectively canceling each other. This causes the circuit's impedance is minimal, primarily determined by the resistance R. The resonant frequency of an RLC circuit is defined as:
537
01:17Series Resonance
692
The RLC circuit impedance is defined as the ratio of the supply voltage to the circuit current. Resonance in such a circuit occurs when the imaginary part of this impedance equals zero. This specific condition means that the inductive reactance is exactly equal to the capacitive reactance. The frequency at which this happens is known as the resonant frequency. Mathematically, the resonant frequency is inversely proportional to the square root of the product of the inductance (L) and capacitance...
692
01:12Mesh Analysis for AC Circuits
645
In the domain of radio communication, the significance of impedance matching must be considered. It is crucial to ensure the efficient transmission of signals between radio transmitters and receivers. Achieving this balance involves using impedance-matching circuits, with one fundamental configuration comprising a resistor, capacitor, and inductor.
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
The process of harmonizing these impedances begins with a clear understanding of the input and output signals. Once these signals are known, the...
645