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Relevant bibliographies by topics / Impedance matching networks

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Academic literature on the topic 'Impedance matching networks'

Author: Grafiati

Published: 10 June 2021

Last updated: 1 February 2022

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Journal articles on the topic "Impedance matching networks"

1

Thompson, M., and J. K. Fidler. "Determination of the Impedance Matching Domain of Impedance Matching Networks." IEEE Transactions on Circuits and Systems I: Regular Papers 51, no. 10 (October 2004): 2098–106. http://dx.doi.org/10.1109/tcsi.2004.835682.

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HEMMINGER, THOMAS L. "ANTENNA IMPEDANCE MATCHING WITH NEURAL NETWORKS." International Journal of Neural Systems 15, no. 05 (October 2005): 357–61. http://dx.doi.org/10.1142/s0129065705000335.

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Impedance matching between transmission lines and antennas is an important and fundamental concept in electromagnetic theory. One definition of antenna impedance is the resistance and reactance seen at the antenna terminals or the ratio of electric to magnetic fields at the input. The primary intent of this paper is real-time compensation for changes in the driving point impedance of an antenna due to frequency deviations. In general, the driving point impedance of an antenna or antenna array is computed by numerical methods such as the method of moments or similar techniques. Some configurations do lend themselves to analytical solutions, which will be the primary focus of this work. This paper employs a neural control system to match antenna feed lines to two common antennas during frequency sweeps. In practice, impedance matching is performed off-line with Smith charts or relatively complex formulas but they rarely perform optimally over a large bandwidth. There have been very few attempts to compensate for matching errors while the transmission system is in operation and most techniques have been targeted to a relatively small range of frequencies. The approach proposed here employs three small neural networks to perform real-time impedance matching over a broad range of frequencies during transmitter operation. Double stub tuners are being explored in this paper but the approach can certainly be applied to other methodologies. The ultimate purpose of this work is the development of an inexpensive microcontroller-based system.

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Sun, Y., and J. K. Fidler. "Design method for impedance matching networks." IEE Proceedings - Circuits, Devices and Systems 143, no. 4 (1996): 186. http://dx.doi.org/10.1049/ip-cds:19960566.

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Tan, Jian Wen, Si Jian Deng, Fang Wei Ye, and De Ping Zeng. "Variability Analysis of T Network Impedance Matching." Applied Mechanics and Materials 427-429 (September 2013): 620–23. http://dx.doi.org/10.4028/www.scientific.net/amm.427-429.620.

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Harmonic rejection ability and reflection coefficient are the most important factors in the design of impedance matching network. However, stability of impedance matching should be taken into account in applications existing load impedance variation and component deviation due to tolerance and process variation. This paper investigates variability of T network impedance matching analytically. The formulas for calculating the resulting reflection coefficient caused by parameter variations are derived from quality factor-based design method. The analysis results can provide reference for design process and an opportunity for a better understanding of the dynamic behavior of the narrowband impedance-matching networks.

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Guo, X. L., J. Huang, Z. L. Wang, H. H. Yin, Z. J. Zhang, M. Shi, and H. Jiang. "Tunable Matching Network Using MEMS Switches." Advanced Materials Research 765-767 (September 2013): 2575–78. http://dx.doi.org/10.4028/www.scientific.net/amr.765-767.2575.

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This paper presents a novel approach in order to construct low-loss reconfigurable impedance matching networks and tuners using MEMS series-contact switches and periodic defected-ground-structures (DGSs) implemented on coplanar waveguide (CPW) transmission lines. The application of DGSs results in an improved insertion loss and power handling capability compared to the conventional RF MEMS impedance tuning networks. The proposed structure consists of 12 DGSs and RF MEMS series-contact switches. The tunable matching network was fabricated on a silicon substrate and is only 1.4×̃˾̈˰̽̽˰̹̾˰̵̹̓͊˾˰̸̵̤˰̵̵̴̱̽̓͂ͅ˰̼̿̓̓˰̶̿˰̸̵̈́˰̵͇̻̾̈́̿͂˰̸̵͇̾˰̵̴̓ͅ˰̈́̿˰̸̱̳̽̈́˰̱˰́̀˰Ω˰̴̼̱̿˰̈́̿˰̅̀˰Ω˰̶͂̿m 5GHz up to 40 GHz is only 0.8 dB. The results show that the tuner can achieve a broadband impedance match for a wide variety of loads that are either purely resistive or that have a large reactance as well.

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Silva, Fabrício G. S., and Robson Nunes de Lima. "A Distributed Triband Impedance Matching Network Based on Multiresonant Networks." Circuits, Systems, and Signal Processing 40, no. 9 (March 18, 2021): 4196–211. http://dx.doi.org/10.1007/s00034-021-01684-y.

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Wang and Cao. "A Review of Impedance Matching Techniques in Power Line Communications." Electronics 8, no. 9 (September 12, 2019): 1022. http://dx.doi.org/10.3390/electronics8091022.

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Impedance mismatch that degrades signal power transfer and affects communication reliability is a major obstacle for power line communications (PLC). Impedance matching techniques can be designed to effectively compensate for the impedance mismatch between PLC modems and power line networks at a specific frequency or for a given frequency band. In this paper, we discuss the tradeoffs that need to be made when designing an effective impedance matching network. We also make a comprehensive review of previous state-of-the-art PLC impedance matching techniques and provide a useful classification of each technique. Finally, we discuss important issues (concerns) and provide suggestions for research directions deserving more attention. This review provides a useful guideline for researchers and manufacturers to quickly understand impedance matching principles and facilitate the design of an effective impedance matching coupler for PLC applications.

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Matolcsy, Balázs, and Attila Zólomy. "Overcoming the Realization Problems of Wideband Matching Circuits." Infocommunications journal, no. 4 (2018): 31–36. http://dx.doi.org/10.36244/icj.2018.4.5.

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During the analytical design process of wideband impedance matching major problems may arise, that might lead to non-realizable matching networks, preventing the successful impedance matching. In this paper two practical design rules and a simplified equation is presented, supporting the design of physically realizable impedance matching networks. The design rules and calculation technique introduced by this paper is summarized, and validated by microwave circuit simulation examples.

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van Bezooijen, A., M. A. de Jongh, F. van Straten, R. Mahmoudi, and A. van Roermund. "Adaptive Impedance-Matching Techniques for Controlling L Networks." IEEE Transactions on Circuits and Systems I: Regular Papers 57, no. 2 (February 2010): 495–505. http://dx.doi.org/10.1109/tcsi.2009.2023764.

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Zhang, Tianyu, Wenquan Che, Haidong Chen, and Quan Xue. "Reconfigurable Impedance Matching Networks With Controllable Phase Shift." IEEE Transactions on Circuits and Systems II: Express Briefs 65, no. 11 (November 2018): 1514–18. http://dx.doi.org/10.1109/tcsii.2017.2754440.

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Dissertations / Theses on the topic "Impedance matching networks"

1

Zhang, Guidong [Verfasser]. "Impedance networks matching mechanism and design of impedance networks converters / Guidong Zhang." Hagen : Fernuniversität Hagen, 2015. http://d-nb.info/1079393064/34.

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Sun, Yichuang. "Analysis and synthesis of impedance matching networks and transconductance amplifier filters." Thesis, University of York, 1996. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.297262.

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Song, Keum Su. "Non-Foster Impedance Matching and Loading Networks for Electrically Small Antennas." The Ohio State University, 2011. http://rave.ohiolink.edu/etdc/view?acc_num=osu1308313555.

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TaheriNejad, Nima. "Power line communications in vehicles : channel measurements and impedance matching networks." Thesis, University of British Columbia, 2015. http://hdl.handle.net/2429/52749.

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In today's Electric Vehicles (EVs) and conventional Combustion Engine Vehicles(CEVs), data communication between electronic control units is accomplished by sending communication signals over dedicated wires. The space requirement, weight, and installation costs for these wires can become significant, especially in electric vehicles of the future, which are highly sophisticated electronic systems. This has motivated research and development activities in the area of Vehicular Power Line Communication (VPLC). VPLC systems reuse power wires inside a vehicle for data communication purposes. Thus, they eliminate the need for extra wires dedicated to communication. However, there are several impediments to overcome in order to achieve a reliable and robust VPLC. Many of these challenges originate from inherent properties of current wirings in vehicles, which are not designed with communication in mind. Therefore, to develop suitable data transmission equipments, a good understanding of the communication channel characteristics is essential. Considering the importance of proper characterization as a first step towards the design and deployment of VPLC systems, in this work, we have tried to contribute to the available body of knowledge on channel characterization for VPLC in EVs and CEVs. As tangible contributions, we present methodology and results of two measurement campaigns in this thesis. The main outcomes of this part of our research are quantitative statements about Channel Transfer Functions and Access Impedance for two vehicles and discussions of our results in the context of VPLC system design. Building on the results of these measurements, an adaptive impedance matching system is designed to improve the power transmission between VPLC devices and the vehicular power line network, and consequently improve the Signal-to-Noise Ratio (SNR) of the communication system. The adaptive impedance matching system is first behaviorally described in VHDL-AMS and simulated using Cadence™ and then for each unit a circuit design compatible for implementation on an Integrated Circuit (IC) platform is suggested. Tested against the challenges of VPLC observed in our measurement campaigns, the proposed system proved to be capable of significantly improving the reliability of communication over power wires in vehicle.
Applied Science, Faculty of
Electrical and Computer Engineering, Department of
Graduate

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Chen, Wei-Chuan. "A Multi-Channel, Impedance-Matching, Wireless, Passive Recorder for Medical Applications." The Ohio State University, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=osu1555661316375242.

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Alibakhshikenari, M., B. S. Virdee, L. Azpilicueta, C. H. See, Raed A. Abd-Alhameed, A. A. Althuwayb, F. Falcone, I. Huyen, T. A. Denidni, and E. Limiti. "Optimum power transfer in RF front end systems using adaptive impedance matching technique." Nature Publishing Group, 2021. http://hdl.handle.net/10454/18508.

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Yes
Matching the antenna’s impedance to the RF-front-end of a wireless communications system is challenging as the impedance varies with its surround environment. Autonomously matching the antenna to the RF-front-end is therefore essential to optimize power transfer and thereby maintain the antenna’s radiation efficiency. This paper presents a theoretical technique for automatically tuning an LC impedance matching network that compensates antenna mismatch presented to the RF-front-end. The proposed technique converges to a matching point without the need of complex mathematical modelling of the system comprising of non-linear control elements. Digital circuitry is used to implement the required matching circuit. Reliable convergence is achieved within the tuning range of the LC-network using control-loops that can independently control the LC impedance. An algorithm based on the proposed technique was used to verify its effectiveness with various antenna loads. Mismatch error of the technique is less than 0.2%. The technique enables speedy convergence (< 5 µs) and is highly accurate for autonomous adaptive antenna matching networks.
This work is partially supported by RTI2018-095499-B-C31, Funded by Ministerio de Ciencia, Innovación y Universidades, Gobierno de España (MCIU/AEI/FEDER,UE), and innovation programme under grant agreement H2020-MSCA-ITN-2016 SECRET-722424 and the financial support from the UK Engineering and Physical Sciences Research Council (EPSRC) under grant EP/E022936/1.

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Kilic, Ozgehan. "Defected Ground Structure And Its Applications To Microwave Devices And Antenna Feed Networks." Master's thesis, METU, 2010. http://etd.lib.metu.edu.tr/upload/12612415/index.pdf.

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This thesis reports the analysis of the rectangular shaped defected ground structure (RS-DGS) and the application of the structure on some microwave devices. DGS is analyzed in terms of its superior properties, which enables the designers to easily realize many kind of microwave devices which are impossible to achieve with the standard applications. Within the scope of this thesis, the focus is on the rectangular shaped DGS and its characteristic properties. The basic slow wave and high impedance characteristics are utilized in the design of some microwave devices. The design is carried on at the two different frequency bands: X-band and Ka band, centering at 10 GHz and 35 GHz, respectively. Finally, using the high impedance property and the coupling between the defects, a wide band 1 : 4 beam forming network is designed and implemented at 10 GHz.

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Kamprath, Richard Alan. "Impedance matching techniques for ethernet communication systems." Texas A&M University, 2003. http://hdl.handle.net/1969.1/5856.

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In modern local area networks, the communication signals sent from one computer to another across the lines of transmission are degraded because of reflection at the receiver. This reflection can be characterized through the impedances of the transmitter and the receiver, and is defined by the Institute of Electrical and Electronic Engineers (IEEE) as the S11 return loss. The specifications for S11 return loss in Gigabit Ethernet are given in terms of magnitude only in the IEEE 802.3 guidelines. This does not fully take into account, however, the effects of frequency dependant impedances within the bandwidth of interest. With a range of 30% error in the category 5, or CAT5, transmission line impedance used in this specification and no further requirements for individual components within the Gigabit Ethernet port, such as the RJ45 magjack or the physical layer, the system can easily be out of tolerance for return loss error. A simple impedance matching circuit could match the CAT5 cable to the physical layer such that the return loss is minimized and the S21 transmission is maximized. The first part of the project was commissioned by Dell Computer to characterize the return loss of all of its platforms. This thesis goes further in the creation of a system that can balance these two impedances so that the IEEE specification failure rate is reduced with the lowest implementation cost, size, power and complexity. The return loss data were used in the second phase of the project as the basis for component ranges needed to balance the impedance seen at the front of the physical layer to the CAT5 transmission line. Using the ladder network theory, an impedance matching circuit was created that significantly reduced the S11 return loss in the passband of the equivalent ladder network. To manage this iterative process, a control loop was also designed. While this system does not produce the accuracy that a programmable finite impulse response (FIR) filter could, it does improve performance with relatively minimal cost, power, area and complexity.

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Unlu, Mehmet. "An Adjustable Impedance Matching Network Using Rf Mems Technology." Master's thesis, METU, 2003. http://etd.lib.metu.edu.tr/upload/1124676/index.pdf.

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This thesis presents design, modeling, and fabrication of an RF MEMS adjustable impedance matching network. The device employs the basic triple stub matching technique for impedance matching. It has three adjustable length stubs which are implemented using capacitively loaded coplanar waveguides. The capacitive loading of the stubs are realized using the MEMS switches which are evenly distributed over the stubs. There are 40 MEMS bridges on each stub whichare separated with &
#955
/40 spacing making a total of 120 MEMS switches in the structure. The variability of the stub length is accomplished by closing the MEMS switch nearest to the required stub length, and making a virtual short circuit to ground. The device is theoretically capable of doing matching to every point on the Smith chart. The device is built on coplanar waveguide transmission lines. It has a center operating frequency of 10GHz, but because of its adjustability property it is expected to work in 1-40GHz range. It has dimensions of 8950 ×
5720µ
m2. This work is the continuation of the first national work on fabrication of RF MEMS devices. The device in this work is fabricated using the surface micromachining technology in the microelectronic facilities of Middle East Technical University.

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Thompson, Mark. "Controlling the Pi impedance matching network for fast antenna tuning." Thesis, University of York, 1997. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.245897.

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Books on the topic "Impedance matching networks"

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The design of impedance-matching networks for radio-frequency and microwave amplifiers. Dedham, MA: Artech House, 1985.

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Yarman, Binboga Siddik. Design of ultra wideband power transfer networks. Chichester, West Sussex, U.K: Wiley, 2010.

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Yarman, Binboga Siddik. Design of ultra wideband power transfer networks. Chichester, West Sussex, U.K: Wiley, 2010.

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Chen, Wai-Kai. Broadband Matching: Theory and Implementations. World Scientific Publishing Co Pte Ltd, 2015.

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Aberle, James T., and Robert Loepsinger-Romak. Active Antennas with Non-Foster Matching Networks (Synthesis Lectures on Antennas). Morgan and Claypool Publishers, 2007.

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Theory and Synthesis of Linear Passive Time-Invariant Networks. Cambridge University Press, 2015.

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Yarman, Binboga Siddik. Design of Ultra Wideband Power Transfer Networks. Wiley & Sons, Incorporated, John, 2010.

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Book chapters on the topic "Impedance matching networks"

1

Zhang, Guidong, Bo Zhang, and Zhong Li. "Impedance Networks and Their Matching." In Studies in Systems, Decision and Control, 37–43. Cham: Springer International Publishing, 2017. http://dx.doi.org/10.1007/978-3-319-63655-9_4.

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Kim, Byungwhan, Donghwan Kim, and Seung Soo Han. "Prediction of Radio Frequency Impedance Matching in Plasma Equipment Using Neural Network." In Advances in Neural Networks - ISNN 2006, 1028–35. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/11760191_150.

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Garrett, Steven L. "One-Dimensional Propagation." In Understanding Acoustics, 453–512. Cham: Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-44787-8_10.

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Abstract Having already invested in understanding both the equation of state and the hydrodynamic equations, only straightforward algebraic manipulations will be required to derive the wave equation, justify its solutions, calculate the speed of sound in fluids, and derive the expressions for acoustic intensity and the acoustic kinetic and potential energy densities of sound waves. The “machinery” developed to describe waves on strings will be sufficient to describe one-dimensional sound propagation in fluids, even though the waves on the string were transverse and the one-dimensional waves in fluids are longitudinal. These results are combined with the thermal and viscous penetration depths to calculate the frequencies and quality factors in standing wave resonators. The coupling of those resonators to loudspeakers will be examined. The introduction of reciprocal transducers that are linear, passive, and reversible will allow absolute calibration of transducers using only electrical measurements (i.e., currents and voltages) by the reciprocity method, if the acoustic impedance that couples the source and receiver is calculable. Reflection and transmission at junctions between multiple ducts and other networks will be calculated and applied to the design of filters. The behavior of waves propagating through horns will provide useful impedance matching but introduce a low-frequency cut-off.

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McEwan, N. J., T. C. Edwards, D. Dernikas, and I. A. Glover. "Signal Transmission, Network Methods and Impedance Matching." In Microwave Devices, Circuits and Subsystems for Communications Engineering, 91–208. Chichester, UK: John Wiley & Sons, Ltd, 2006. http://dx.doi.org/10.1002/0470012757.ch3.

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Banerjee, Amal. "Automated Impedance Matching Network Design Process and Design Examples with SPICE Performance Evaluation." In Automated Broad and Narrow Band Impedance Matching for RF and Microwave Circuits, 37–101. Cham: Springer International Publishing, 2018. http://dx.doi.org/10.1007/978-3-319-99001-9_4.

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Ramli, Mohd Syakirin, Hamzah Ahmad, Addie Irawan, and Nur Liyana Ibrahim. "Model-Free Tuning of Laguerre Network for Impedance Matching in Bilateral Teleoperation System." In Lecture Notes in Electrical Engineering, 329–43. Singapore: Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-5281-6_23.

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Kim, Byungwhan, Jae Young Park, Dong Hwan Kim, and Seung Soo Han. "Diagnosis Model of Radio Frequency Impedance Matching in Plasma Equipment by Using Neural Network and Wavelets." In Lecture Notes in Computer Science, 995–99. Berlin, Heidelberg: Springer Berlin Heidelberg, 2006. http://dx.doi.org/10.1007/978-3-540-36668-3_121.

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Winder, Steve. "Impedance matching networks." In Analog and Digital Filter Design, 223–41. Elsevier, 2002. http://dx.doi.org/10.1016/b978-075067547-5/50008-7.

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"Impedance Matching Networks." In Introduction to RF Power Amplifier Design and Simulation, 261–306. CRC Press, 2015. http://dx.doi.org/10.1201/b18677-6.

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Almalkawi, Mohammad. "Impedance matching networks." In RF and Microwave Module Level Design and Integration, 103–30. Institution of Engineering and Technology, 2019. http://dx.doi.org/10.1049/pbcs034e_ch4.

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Conference papers on the topic "Impedance matching networks"

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Thompson, M. "Design software for impedance matching networks." In 7th International Conference on High Frequency Radio Systems and Techniques. IEE, 1997. http://dx.doi.org/10.1049/cp:19970838.

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Jurkov, Alexander S., Aaron Radomski, and David J. Perreault. "Tunable impedance matching networks based on phase-switched impedance modulation." In 2017 IEEE Energy Conversion Congress and Exposition (ECCE). IEEE, 2017. http://dx.doi.org/10.1109/ecce.2017.8095887.

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McCubbin, James, Vanessa J. Fenlon, and Claudio Balocco. "Impedance Matching Networks Designed by Evolutionary Algorithms." In 2019 44th International Conference on Infrared, Millimeter, and Terahertz Waves (IRMMW-THz). IEEE, 2019. http://dx.doi.org/10.1109/irmmw-thz.2019.8874315.

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Amin, Hamid Yadegar, Serdar Ozoguz, and B. S. Yarman. "Impedance matching networks for current output integrated circuits." In 2015 2nd International Conference on Knowledge-Based Engineering and Innovation (KBEI). IEEE, 2015. http://dx.doi.org/10.1109/kbei.2015.7436023.

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Batistell, Graciele, Timo Holzmann, Stephan Leuschner, Andreas Wolter, Antonio Passamani, and Johannes Sturm. "SiP solutions for wireless transceiver impedance matching networks." In 2017 12th European Microwave Integrated Circuits Conference (EuMIC). IEEE, 2017. http://dx.doi.org/10.23919/eumic.2017.8230725.

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Batistell, Graciele, Timo Holzmann, Stephan Leuschner, Andreas Wolter, Antonio Passamani, and Johannes Sturm. "SiP solutions for wireless transceiver impedance matching networks." In 2017 47th European Microwave Conference (EuMC). IEEE, 2017. http://dx.doi.org/10.23919/eumc.2017.8231031.

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Zarbakhsh, Javad, Abbas Mohtashami, Kurt Hingerl, Lasha Tkeshelashvili, and Kurt Busch. "Improving the Impedance Matching in Photonic Crystal Waveguides." In Proceedings of 2006 8th International Conference on Transparent Optical Networks. IEEE, 2006. http://dx.doi.org/10.1109/icton.2006.248480.

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Bhuiyan, Rashed Hossain, MD Mazharul Islam, and Haiying Huang. "Wireless Excitation and Electrical Impedance Matching of Piezoelectric Wafer Active Sensors." In ASME 2012 Conference on Smart Materials, Adaptive Structures and Intelligent Systems. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/smasis2012-8210.

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Wireless ultrasound inspections using Piezoelectric Wafer Active Sensors (PWAS) are attractive for Structural Health Monitoring (SHM). However, the impedance mismatch between the PWAS and the wireless transponder reduces the wirelessly transmitted signal strength. Electrical Impedance Matching (EIM) circuit can be introduced to maximize the power transmission between the PWAS and the wireless transponder. This paper discusses the wireless excitation of ultrasound as well as the design, simulation, and characterization of the EIM networks for PWAS. To maximize power transmission, a two port EIM network was developed using a computerized smith chart. The equivalent circuit of the PWAS and the EIM network were then combined to establish the equivalent circuit of the matched transducer. Computer simulations were carried out to evaluate the gain, the bandwidth, and the sensitivity of the EIM networks. Two-port EIM networks were implemented for both the actuator and the sensor in an ultrasound pitch-catch inspection system. The performance of the pitch-catch systems with and without the EIM networks was compared. Detailed analysis, simulation, hardware implementation, and measurement results are presented.

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Li, Rong, Zhiyong Feng, Peng Yin, and Ying Wang. "Impedance matching based cross-layer architecture for cognitive networks." In 2011 IEEE Globecom Workshops. IEEE, 2011. http://dx.doi.org/10.1109/glocomw.2011.6162594.

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Pesel, Raisa G., Sara S. Attar, and Raafat R. Mansour. "MEMS-based switched-capacitor banks for impedance matching networks." In 2015 European Microwave Conference (EuMC 2015). IEEE, 2015. http://dx.doi.org/10.1109/eumc.2015.7345939.

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