642 resources related to Mutual Impedance
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2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting
The joint meeting is intended to provide an international forum for the exchange of information on state of the art research in the area of antennas and propagation, electromagnetic engineering and radio science
The conference program will consist of plenary lectures, symposia, workshops and invitedsessions of the latest significant findings and developments in all the major fields of biomedical engineering.Submitted papers will be peer reviewed. Accepted high quality papers will be presented in oral and postersessions, will appear in the Conference Proceedings and will be indexed in PubMed/MEDLINE
This conference provides an exchange of technical topics in the fields of Solid State Modulators and Switches, Breakdown and Insulation, Compact Pulsed Power Systems, High Voltage Design, High Power Microwaves, Biological Applications, Analytical Methods and Modeling, and Accelerators.
The Annual IEEE PES General Meeting will bring together over 2900 attendees for technical sessions, administrative sessions, super sessions, poster sessions, student programs, awards ceremonies, committee meetings, tutorials and more
The IEEE International Microwave Symposium (IMS) is the world s foremost conference covering the UHF, RF, wireless, microwave, millimeter-wave, terahertz, and optical frequencies; encompassing everything from basic technologies to components to systems including the latest RFIC, MIC, MEMS and filter technologies, advances in CAD, modeling, EM simulation and more. The IMS includes technical and interactive sessions, exhibits, student competitions, panels, workshops, tutorials, and networking events.
The IEEE Transactions on Advanced Packaging has its focus on the modeling, design, and analysis of advanced electronic, photonic, sensors, and MEMS packaging.
The IEEE Aerospace and Electronic Systems Magazine publishes articles concerned with the various aspects of systems for space, air, ocean, or ground environments.
Experimental and theoretical advances in antennas including design and development, and in the propagation of electromagnetic waves including scattering, diffraction and interaction with continuous media; and applications pertinent to antennas and propagation, such as remote sensing, applied optics, and millimeter and submillimeter wave techniques.
IEEE Antennas and Wireless Propagation Letters (AWP Letters) will be devoted to the rapid electronic publication of short manuscripts in the technical areas of Antennas and Wireless Propagation.
Broad coverage of concepts and methods of the physical and engineering sciences applied in biology and medicine, ranging from formalized mathematical theory through experimental science and technological development to practical clinical applications.
2018 15th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), 2018
The wireless power transfer (WPT) system for LED TVs could be adapted to transfer power to specific locations in luxury residences. However, at a resonant frequency, the output power of the WPT system is only able to provide maximum power at only a set distance. This article presents the adaption of mutual impedance for maximum power point tracking (MPPT) to ...
2009 Asia Pacific Microwave Conference, 2009
The performance of an antenna is changed whenever it is placed within the field of another antenna because of the existence of mutual coupling. The concept of receiving mutual impedance was introduced to characterize the mutual coupling effect in receiving antenna arrays and has been successfully applied in many occasions, such as direction finding, adaptive nulling, and medical imaging. In ...
2015 IEEE 12th Malaysia International Conference on Communications (MICC), 2015
Mutual coupling in antenna arrays bring a significant impact especially when antenna elements are placed close with each other. It affects antenna performance, communication capacity and so on. Likewise, an accurate analysis of mutual coupling which can be expressed in terms of mutual impedance is important. A few analytic approaches for mutual impedance between two dipoles are available, one of ...
2013 Asia-Pacific Microwave Conference Proceedings (APMC), 2013
Antenna mutual coupling is a significant issue for the mobile communications system, near field communications system, to improve communication capacity and so on. Therefore, the accurate analysis of the mutual coupling between antennas is very important. Accordingly, calculating the mutual impedance of dipoles has been studied in cases of co- and non-planar skew. This paper proposes an exact and simple ...
2016 22nd International Conference on Applied Electromagnetics and Communications (ICECOM), 2016
In this work the improvement of HF RFID detection is obtained by the addition of small resonator in the reader coil. In conventional RFID system, the link between the reader and the tag coils is the mutual inductance, the added resonator is magnetically coupled with the reader coil, and then the link is expressed by the mutual impedance. Theoretical calculation ...
Fast Broadband Impedance Matching with Automatic Circuit Synthesis: MicroApps 2015 - Keysight Technologies
A Fully-Integrated SOI CMOS Complex-Impedance Detector for Matching Network Tuning in LTE Power Amplifier: RFIC Interactive Forum
MicroApps: Making the Transition from AWR to Cadence Tools - A More Seamless & Effcient Flow for Mutual IC & PCB Customers (AWR)
IEEE Strategic Plan
Dynamically Diverse Legged Locomotion for Rough Terrain
PCB Fabrication Influences on Microwave Performance: MicroApps 2015 - Rogers Corporation
2D Nanodevices - Paul Hurley at INC 2019
Dorothy, we're not in Kansas anymore, we are in Impedance Land. Oh my! EMC Webinar
A High-Efficiency Linear Power Amplifier for 28GHz Mobile Communications in 40nm CMOS: RFIC Interactive Forum 2017
IEEE Sections Congress 2014: Luc Van den Hove, Wearable Medical Technology
Voltage Metrology with Superconductive Electronics
ON-CHIP VOLTAGE AND TIMING DIAGNOSTIC CIRCUITS
ISEC 2013 Special Gordon Donaldson Session: Remembering Gordon Donaldson - 3 of 7 - MEG and ULF-MRI
The wireless power transfer (WPT) system for LED TVs could be adapted to transfer power to specific locations in luxury residences. However, at a resonant frequency, the output power of the WPT system is only able to provide maximum power at only a set distance. This article presents the adaption of mutual impedance for maximum power point tracking (MPPT) to vary the distance for LED TVs using the WPT system. To adapt the mutual impedance, the frequencies and the resonator capacitances are tuned to the required distance. In the experiment, the WPT system was loaded with a 30W LED TV and the input was through a full-bridge inverter to enable the input voltage and frequency to be varied. The computer simulation and the actual experiment on MPPT for the LED TV WPT system closely correlate. The result shows that when the LED TV WPT system input was 6.66 V, 3.01 kHz, C 16.8 F, the maximum output power was 30.1 W was achieved at a distance of only 10 cm. Significantly, when using the frequencies and resonator capacitances according to the mutual impedance adaption as proposed in this article, the LED TV WPT output power reached peak power at distances varying between 0-60 cm distances.
The performance of an antenna is changed whenever it is placed within the field of another antenna because of the existence of mutual coupling. The concept of receiving mutual impedance was introduced to characterize the mutual coupling effect in receiving antenna arrays and has been successfully applied in many occasions, such as direction finding, adaptive nulling, and medical imaging. In this paper, the definition of receiving mutual impedance is extended to characterize the mutual impedance coupling effect in two patch antennas operating in a rich multipath environment. In the extended definition, the two antennas are excited by a larger number plane waves coming from different directions. The behaviour of the receiving mutual impedances when the antennas are excited by different number of plane waves is studied and compared with the case of omni-directional antennas. This extends the use of receiving mutual impedance to non-omni-directional antennas for operation in multipath environments and has an implication for receiving antenna array design for multi-antenna systems such as MIMO systems.
Mutual coupling in antenna arrays bring a significant impact especially when antenna elements are placed close with each other. It affects antenna performance, communication capacity and so on. Likewise, an accurate analysis of mutual coupling which can be expressed in terms of mutual impedance is important. A few analytic approaches for mutual impedance between two dipoles are available, one of it is the Induced EMF method. The Induced EMF method is accurate for short and thin, with an infinitesimal feed gap, which is impractical. A finite feed gap which is practical, can be modeled using electromagnetic simulation approaches. However, no analytical techniques are available to compare the results of the design with numerical software. The finite feed gap modelling of the mutual impedance using the Induced EMF method will be highlighted in this paper. The results are compared with other electromagnetic software. Then, the effect of the finite feed gap model has been observed in the far field pattern of dipole antenna arrays and they are in good agreement with other electromagnetic software.
Antenna mutual coupling is a significant issue for the mobile communications system, near field communications system, to improve communication capacity and so on. Therefore, the accurate analysis of the mutual coupling between antennas is very important. Accordingly, calculating the mutual impedance of dipoles has been studied in cases of co- and non-planar skew. This paper proposes an exact and simple method for analyzing the mutual impedance between two arbitrarily located and slanted dipoles using the effective length vector (ELV) and derives its closed form solution as well. The proposed formula is verified by numerical tool and gives good agreement.
In this work the improvement of HF RFID detection is obtained by the addition of small resonator in the reader coil. In conventional RFID system, the link between the reader and the tag coils is the mutual inductance, the added resonator is magnetically coupled with the reader coil, and then the link is expressed by the mutual impedance. Theoretical calculation of the equivalent mutual impedance of such system is reported and validated by comparison with HFSS simulation and measures.
The accuracy of direction finding using antenna arrays with different array apertures is studied. Numerical simulations are performed using full-wave moment method. The undesirable mutual coupling effect is properly modelled and compensated using receiving-mutual-impedance and the direction finding is obtained using the Matrix Pencil Method. The results show that increasing the number of elements with a small array aperture can significantly improve the accuracy in direction finding. The findings are crucial for the design of antenna arrays for direction finding.
We derive a closed-form expression for the mutual impedance due to eddy- current induction for a pair of cylindrical air-core coils with arbitrary position and orientation above a planar conductor. By extending a recently devised model for individual coils with an arbitrary tilt with respect to the surface, we obtain a remarkably simple result. We validated our model with measurements on a conductive plate. The results should be useful for designing new probe configurations and for evaluating the signals in eddy-current inspections when driver-pickup coil configurations are utilized.
It is very essential to calculate the mutual impedance between overhead and buried conductors for analyzing electromagnetic compatibility problems related to a transmission line system. An efficient algorithm for calculating the Pollaczek integral, whose integrand oscillates rapidly and decays slowly, is proposed in this paper. With the help of the asymptotic extraction technique, the Pollaczek integral can be decomposed into the sum of two parts, one of which is expressed with an exponential integral and the other is the one that has a rapidly damped integrand. A comparison of the numerical results with published data shows very good agreement. The proposed approach is a good candidate for calculating impedances related to the Pollaczek integral.
Closed-form expression for mutual impedance of not-too-closely spaced short dipoles with constant current distribution is derived analytically using definition integral relation based on a method of electromotive forces (EMF) and approximation of sine and cosine functions by two or three terms of Taylor series expansion. The values given by analytical expressions are compared with the ones calculated numerically and relative error is presented up to the dipole distance of λ0. The derived expressions might be beneficial for evaluation of e.g. input resistance of close but not-too-closely spaced elements in multi-element monopole arrays.
This paper presents a numerical method for calculating the frequency response of a CMUT with a large number of cells. In a multi-cell configuration, commonly found in CMUTs, each cell is affected by the acoustic loading from neighboring cells. Thus, for an accurate model of a multi-cell CMUT element it is better to consider the mutual acoustic impedance instead of the acoustic impedance of a single cell only. We calculate the velocity of every cell (plate movement) simultaneously, with the mutual impedance effects taken into account. The model predicts that the cells exhibit different frequency responses, based on their locations in the element. We used a laser interferometer to validate the model by measuring the displacement response of a CMUT immersed in vegetable oil. The device has 169 circular cells (single crystal silicon plates, 500 nm thick, 21 μm radii) placed in a hexagonal cell arrangement. The measurement results agree well with the numerical results. The computation time of our method is significantly shorter than finite element based calculations. Our model can be used for finding optimized cell configurations for CMUTs utilized in various applications such as medical imaging and therapeutic treatment.
This guide is expected to provide definitions, methodology for analysis of dc system harmonics and its effects, and cd filter performance requirements.