In the magnetic resonance coupling based wireless energy transfer system, electromagnetic. Plasmon coupling is a reaction that occurs when two or more plasmonic particles approach each other to a distance below approximately one diameters length. Study on electromagnetic characteristics of the magnetic coupling. For this reason, a simplified explanation of these resonances among multiparallel inverters is presented in 17. Magnetic resonance imaging physical principles and sequence design by haacke, brown, thompson and venkantesan.
While selfresonators resonance is made up with selfinductance coil and parasitic capacitance. Electric coupling to the magnetic resonance of split ring. Recent advances in circuits wireless power transfer. Electric coupling to the magnetic resonance of split ring resonators n. In this paper, we will introduce wireless power transfer using resonant inductive coupling for 3dics to increase power transfer efficiency and density with smaller coils. The resonance phenomena among multiparallel inverters are more complicated than the case of single one 16. Hence, the exchange coupling only affects the microwave properties of the layered structure. Mickiewicza 30, 30059 cracow, poland b institute of electronics agh, al. Eventually the set of three equations corresponding to the first layer are a function of only the four 6eld amplitudes associated with the last layer ex posed to free space. The transition from typical electromagnetic induction to magnetic resonant coupling is shown. Resonant inductive coupling is a type of electromagnetic wpt very promising efficiencies above 80% pteff.
Interfacedriven spintorque ferromagnetic resonance by rashba coupling at the interface between non magnetic materials article pdf available. Wireless power transfer using coupled magnetic resonance. In magnetic coupling, the magnetic field of one of the devices induces current in the other device of the coupling system. The book discusses the theory of ferromagnetic resonance in detail and the investigations and treatments of problems in this theory. Abstractthe research reported in this article is related to the. The electromagnetic resonance techniques have become a central field of modern scientific and technical activity. Magnetic resonant coupling as a potential means for wireless power transfer to multiple small receivers, benjamin l. Wireless power transfer by using magnetically coupled resonators. The book ferromagnetic resonance theory and applications highlights recent advances at the interface between the science and technology of nanostructures bilayermultilayers, nanowires, spinel type nanoparticles, photonic crystal, etc. Wireless power transmission technology using magnetic resonance coupling, offering wireless midrange power transmission, was originally proposed by a research group led by marin soljacic from mit in 2007. The quantum theory of nuclear magnets is presented within a strong physical framework, supported by figures. In particular, resonant electrical coupling is studied as an alternative to resonant magnetic coupling. By applying resonance with in magnetic coupling, the power transfer at a greater distance can be obtained. As shown in figure 1b, the system consists of four coils and can be modeled as a.
Clinical magnetic resonance imaging by edelman, hesselink and zlatkin. Upon the occurrence of plasmon coupling, the resonance of individual particles start to hybridize, and their resonance spectrum peak wavelength will either blueshift or redshift, depending on how surface charge density distributes over. Wireless energy transfer by resonant inductive coupling. Study of resonant coupling using magnetic and negative. Innovative wireless power receiver for inductive coupling and. Inductive coupling and resonant coupling have been two main methods for wireless power transfer 3. Resonance enhanced coupling is ubiquitous in wireless power transmission systems due to the high ef. We limit the treatment to the case of two objects, denoted by source and device, such that the source identified by the subscript s is driven externally at a constant frequency, and the two objects have a coupling coefficient k. Characteristics of inductive coupling method and magnetic resonance method. Magnetic resonant coupling as a potential means for.
Resonant inductive coupling or magnetic phase synchronous coupling is a phenomenon with. Magnetic resonance and magnetic induction what is the best choice for my application. Basics of nuclear magnetic resonance, second edition is a comprehensive and modern introduction which focuses on those essential principles and concepts needed for a thorough understanding of the subject, rather than the practical aspects. Design of wireless power transfer system via magnetic. Ferromagnetic resonance theory and applications intechopen. Resonant inductive coupling or magnetic phase synchronous coupling is a phenomenon with inductive coupling where the coupling becomes stronger when the secondary loadbearing side of the loosely coupled coil resonates. Wireless power transmission using resonance inductive. Pdf investigation of magnetic resonance coupling circuit. Objective to quantify right ventriculoarterial coupling in pulmonary hypertension by combining standard right heart catheterisation rhc and cardiac magnetic resonance cmr and to estimate it noninvasively with cmr alone. Resonance in the transmitting coil improves the energy ef. Surface plasmon coupling in dimers of gold nanoparticles. Magnetic coupling is an old and well understood method in the field of wireless power transfer. Molecules identified, characterized, quantified an informationrich and nondestructive analytical tool, nuclear magnetic resonance nmr spectroscopy uses the inherent magnetic properties of specific atomic nuclei to reveal the structure, identity, concentration, and behavior of molecules in solid or liquid samples.
Study of resonancebased wireless electric vehicle charging. The resonant coil design is taken as the core technology in the magnetic coupling resonant wireless power transmission system. Nmr spectroscopy spinspin scalar coupling the principal source of scalar coupling is an indirect interaction mediated by electrons involved in chemical bonding the magnitude of interaction is proportional to the probability of. Three volumes featuring a good mixture of technique and use. This is a good way to maximize the transfer of energy, simply because the nearfield region is where the field is still fairly strong, and resonance is where maximum energy transfer occurs. Nuclear magnetic resonance nmr spectroscopy direct observation of the hs and cs of a molecules nuclei are positively charged and spin on an axis. Dualfrequency ferromagnetic resonance to measure spin. Magnetic resonant coupling as a potential means for wireless.
Unified theory of electromagnetic induction and magnetic. Free spectroscopy books download ebooks online textbooks. Therefore, power can be transferred from a sending unit to a receiving one. This allows transfer of power across large air gaps with high efficiency. Maximum efficiency occurs at the critical coupling point k c and decreases dramatically beyond that point when the coupling gets smaller. Wireless power transfer via strongly coupled magnetic. The selection is a valuable source of data for readers interested in nuclear magnetic resonance spectroscopy. The signal was very stable and free of any extraneous noise that may have caused distortion or ringing in the signal. Show less nuclear magnetic resonance spectroscopy, second edition focuses on twodimensional nuclear magnetic resonance nmr spectroscopy, high resolution nmr of solids, water suppression, multiple quantum spectroscopy, and nmr imaging. To explaining the coupling resonance phenomena, the parallel and series resonances should be investigated as a whole. At the transmitting side, an alternating current flows through a coil, generating a magnetic field. Introduction to magnetic resonance imaging techniques. Wireless power transmission via magnetic resonant coupling. Selfresonator and lc resonator are two commonly applied variations of resonance coils in wpt 7.
Cse ece eee free download pdf new ieee projects ieee mini projects usa basic study of improving efficiency of wireless power transfer via magnetic resonance coupling based on impedance matchingieeepapers ieee project. An inductively coupled power transfer system has a pair of coupled coils. Spin pumping is a method for injecting a pure spin current into a non magnetic metal nm by inducing precession of a neighboring ferromagnet fm at its ferromagnetic resonance frequency. Resonant inductive coupling wireless power transfer. Magnetic resonant coupling as a potential means for wireless power transfer to multiple small receivers. Abstractmagnetic resonance coupling is a widely used technique for wireless power transfer wpt in biomedical and consumer electronics applications. But as the magnetic field decay very quickly, magnetic field is effective only at a very short distance. Magnetic resonant coupling based wireless power transfer system with inband q factor is defined by the following equation, 1 where f represents the operating frequency, l the inductance of a loop antenna, and r the resistance in series. Ferromagneticresonance of exchangecoupled magnetic layers. Ieee transactions on power electronics, 247,july, 2009. Relative large distances 3 times the txrx diameters. In a multiple receiver system, a means for tracking frequency shifts and continuously retuning the lumped capacitances that terminate each receiver coil so as to maximize efficiency is a key issue for future work. This paper presents a magnetic coupling resonance wpt system with classe. In this work, design considerations for an asymmetrical 4element wpt system are investigated.
Wireless power transfer wpt via nearfield, resonant coupling is a. An analysis of magnetic resonance coupling effects on wireless power transfer by coil inductance and placement hyeonseok hwang, junil moon, bumsoo lee, chan hui jeong, soowon kim school of electrical engineering. Wireless energy transfer by resonant inductive coupling master of science thesis rikard vinge department of signals and systems chalmers university of technology goteborg, sweden 2015. Magnetic resonant coupling based wireless power transfer. Pdf refinement of protein tertiary structure by using spinspin coupling constants from nuclear magnetic resonance measurements free epub, mobi, pdf ebooks download, ebook torrents download. The resonance of an inductively coupled system increases the amount of magnetic flux linked between coils and improves the power transmission significantly 5. Spintocharge conversion using rashba coupling at the. Rigorous numerical study of strong microwave photon. Boopalan1 and c k subramaniam2 1mems and sensors division, school of electronics engineering, vit university, vellore 632014, tn, india. Over recent years magnetic resonance imaging has become a wellestablished textbook on basic mri technique. Wireless power transfer is achieved using magnetic field. In general, resonance involves energy oscillating between two modes, a familiar example being a mechanical pendulum in which energy oscillates between potential and kinetic forms. The circuit theory behind coupledmode magnetic resonance.
Using the concept of resonance it makes the two objects to interact each other very strongly. Wireless power transfer using resonant inductive coupling. Moreover, we report a shift in the magnetic resonance frequency as high as 20 ghz in cofe. Pdf refinement of protein tertiary structure by using. Firstly, based on the mutual coupling model, mathematical expressions of optimal coupling coefficients for the maximum power transmission target are deduced. Potential applications electric vehicle charging sensor networks biomedical implants commercial electronic devices ric is a very novel technology. By applying resonance with in magnetic coupling, the power transfer at a. Interlayer exchange coupling between layers with perpendicular and easyplane magnetic anisotropies separated by a non magnetic spacer is studied using ferromagnetic resonance. Generalized coupling resonance modeling, analysis, and. The experimental magnetic resonance coupling based wireless energy transfer system with the metallic sheet is shown in fig. Resonance inductive coupling inductance induces current in the circuit. In this article, these methods are applied to increase the induced voltage in an electromagnetic localization system 21. Loose coupling or tight coupling between the tx and rx coils.
Lossfree gyrator implementation has been enabled following the rapid. Tunable magnetic resonance in microwave spintronics devices. Investigation of highefficiency wireless power transfer. In this book, topics of mrs both relevant to the clinic and also those that are beyond the clinical arena. L is the resonance width due to load resistance connected to the second object proportional to 1r l, f s t is the excitation applied to the first object, and k 23 is the coupling rate between the two objects. The phenomenon of resonant absorption of a high frequency magnetic field in ferromagnetic substances is a collection of papers on the basic theory of ferromagnetic resonance. When you combine the two, you simply have resonant coupling within the nearfield regions. As seen in the figure 7, the coil provides the inductance. Its just that it is much more efficient that not having resonance.
Download fulltext pdf download fulltext pdf wireless power transfer using coupled magnetic resonance in the nonradiative near field conference paper pdf available. In this condition, the alternating field amplitude in the primary inductor is constant, a 2 t a 2 e. Pdf interfacedriven spintorque ferromagnetic resonance. The surface plasmon sp coupling in dimers of spherical and faceted gold nanoparticles was investigated experimentally and computationally at the singleparticle level. Pdf structure analysis of magnetic coupling resonant for. Parameters optimization for magnetic resonance coupling. Maksymov,1,2,a jessica hutomo,1 donghee nam,1 and mikhail kostylev1 1school of physics m0, the university of western austra lia, 35 stirling highway, crawley, wa 6009, australia 2arc centre of excellence for nanoscale biophotonics, school of applied sciences, rmit university. Study of resonant coupling using magnetic and negative refractive index materials g. Resonant inductive coupling is also being used in wireless power systems for. Nuclear magnetic resonance spectroscopy sciencedirect. Kafesaki institute of electronic structure and laser iesl, foundation for research and technology hellas.
Individual ideal dimers of two spherical gold nanoparticles with a constant gap, filled by a selfassembled monolayer of 1,8octanedithiol linker molecules, exhibit highly uniform darkfield df scattering spectra. As shown in figure 1b, the system consists of four coils and can be modeled as a lumped rlc network using equivalent circuit theory. Research and quality assurance laboratories across various fields of study. May 07, 2014 design of wireless power transfer system via magnetic resonant coupling at. Rigorous numerical study of strong microwave photonmagnon coupling in alldielectric magnetic multilayers ivan s. Design of wireless power transfer system via magnetic resonant coupling at.
Design crosssectional analysis in a retrospective cohort of consecutive patients. Magnetic resonance in coupled double films separated by. Wireless power transfer can be achieved using magnetic resonant coupling when the transmitting and receiving antennas are in resonance and the resonance frequency of the receiving and transmitting antennas are the same. Spreen, who taught me how to analyze magnetic coupling goal.
In steady state analysis, which applies to the conventional inductive power transmission links, f s t in is a sinusoidal signal described as a s e. Magnetic resonance spectroscopy is a unique tool to probe the biochemistry in vivo providing metabolic information noninvasively. Infineon white paper resonant wireless power transfer. Structure analysis of magnetic coupling resonant for wireless power transmission system. Architects of wireless power transfer systems face a couple of choices in the configurations of coils and the magnetic transfer technique. Spintocharge conversion using rashba coupling at the interface between non magnetic materials. A resonant transformer of this type is often used in analog circuitry as a bandpass filter. Coupling these materials to optical nanocavities enables advanced quantum optics and nanophotonic devices. Journal of magnetism and magnetic materials 127 1993 219223 northholland magnetic resonance in coupled double films separated by nonmagnetic interlayer a. Physics of highly resonant wireless power transfer resonance resonance is a phenomenon that occurs in nature in many different forms.
Taking maximum power transmission and power stable transmission as research objectives, optimal design for the wireless power transmission system based on magnetic resonance coupling is carried out in this paper. Maximizing air gap and efficiency of magnetic resonant. The mechanism of the high efficiency and high power transfer across a large air gap and displacement is discussed, where the primary and secondaryside resonant frequencies are the same. Twodimensional semiconducting transition metal dichalcogenides tmdcs are extremely attractive materials for optoelectronic applications in the visible and nearinfrared range. Working with air gaps in the centimeter range requires a resonant scheme using coupled resonant coils that can cope with low coupling factors. Since magnetic resonance coupling involves creating a resonance and transferring the power without. Wireless power transmission using resonance inductive coupling. An analysis of magnetic resonance coupling effects on. The degree of coupling is expressed by the coupling factor k. The samples consist of a coni multilayer with perpendicular magnetic anisotropy and a cofeb layer with easyplane anisotropy separated by a variable thickness ru layer. They used a selfmade wireless power device to power a 60watt bulb from a distance of 2 m, with an efficiency of 4050%. Magnetic coupling often seems to be mysterious and hard to quantify i had the good fortune of having a mentor, dr. A comprehensive survey of the analytical treatment of mri physics and engineering, it gives readers the background needed to cope with the problems that arise when applying mri in medicine or when subsystems or sequences for new. In the single receiver system at resonance, more than 50% of the power that is supplied by the actual source is delivered to the load.
Furthermore, we demonstrate a new scheme to control the magnetic resonance frequency. A methodology of charging each node of a wsn by considering the scenario of a wireless charging vehicle wcv is proposed by xie et al. A popular method to detect spin current uses the inverse spin hall effect ishe to convert the spin current to a detectable charge current and hence a voltage. When the coupling between the tx and rx coils decreases, the subresonant frequencies of two coil peaks converge at the fundamental frequency f 0 of the system. Investigation of magnetic resonance coupling circuit topologies for wireless power transmission. Design considerations for asymmetric magnetically coupled. Basic study of improving efficiency of wireless power. Not an intro, but a good followup according to people who have read it.
890 1546 1259 1281 152 683 949 883 347 519 1495 1467 962 1261 417 122 1485 347 814 87 101 14 666 1406 1348 323 854 1028 733 1235