无线电能传输技术实现了对设备的非接触供电,适应了特殊场合(如移动设备和旋转设备)供电需求,避免了传统传导式供电带来的诸多问题。然而在实际应用中(如医学电子胶囊、无线供电时的信息反馈等),在能量无线传输的同时还要求信息的同步...无线电能传输技术实现了对设备的非接触供电,适应了特殊场合(如移动设备和旋转设备)供电需求,避免了传统传导式供电带来的诸多问题。然而在实际应用中(如医学电子胶囊、无线供电时的信息反馈等),在能量无线传输的同时还要求信息的同步传输。针对这类应用,提出一种新型双谐振结构,利用其固有的双谐振特性,在一对线圈中实现能量和信号的同步传输。在分析双谐振电路特性的基础上,通过提出传输因子的概念,分析其信道带宽与响应时间,并研究传输因子与能量/信息传输性能的关系。实验表明,当负载小于10Ω,传输距离小于120 mm时,能量传输效率高于70%。通过开关键控调制方式,在负载值1.31Ω、距离122 mm时,实现了50 k Hz的有效传输。展开更多
Mesoscopic damped mutual capacitance coupled double resonance circuit is quantized by the method of damped harmonic oscillator quantization. Hamiltonian is diagonalized by the method of unitary transformation. The ene...Mesoscopic damped mutual capacitance coupled double resonance circuit is quantized by the method of damped harmonic oscillator quantization. Hamiltonian is diagonalized by the method of unitary transformation. The energy spectra of this circuit are given. The quantum fluctuations of the charge and current of each loop are investigated by the method of thermo- field dynamics (TFD) in thermal excitation state,thermal squeezed vacuum state, thermal vacuum state and vacuum state. It is shown that the quantum fluctuations of the charge and current are related to not only circuit inherent parameter and coupled magnitude, but also quantum number of excitation, squeezed coefficients, squeezed angle and environmental temperature. And the quantum fluctuations increase with the increase of temperature and decay with time.展开更多
文摘无线电能传输技术实现了对设备的非接触供电,适应了特殊场合(如移动设备和旋转设备)供电需求,避免了传统传导式供电带来的诸多问题。然而在实际应用中(如医学电子胶囊、无线供电时的信息反馈等),在能量无线传输的同时还要求信息的同步传输。针对这类应用,提出一种新型双谐振结构,利用其固有的双谐振特性,在一对线圈中实现能量和信号的同步传输。在分析双谐振电路特性的基础上,通过提出传输因子的概念,分析其信道带宽与响应时间,并研究传输因子与能量/信息传输性能的关系。实验表明,当负载小于10Ω,传输距离小于120 mm时,能量传输效率高于70%。通过开关键控调制方式,在负载值1.31Ω、距离122 mm时,实现了50 k Hz的有效传输。
基金the Natural Science Foundation of Heze University ofShandong Province, China (No.XY05WL01) and the UniversityExperimental Technology Foundation of Shandong Province, China(No.S04W138)
文摘Mesoscopic damped mutual capacitance coupled double resonance circuit is quantized by the method of damped harmonic oscillator quantization. Hamiltonian is diagonalized by the method of unitary transformation. The energy spectra of this circuit are given. The quantum fluctuations of the charge and current of each loop are investigated by the method of thermo- field dynamics (TFD) in thermal excitation state,thermal squeezed vacuum state, thermal vacuum state and vacuum state. It is shown that the quantum fluctuations of the charge and current are related to not only circuit inherent parameter and coupled magnitude, but also quantum number of excitation, squeezed coefficients, squeezed angle and environmental temperature. And the quantum fluctuations increase with the increase of temperature and decay with time.
