Results 251 to 260 of about 73,972 (294)

Design method for impedance matching networks

IEE Proceedings - Circuits, Devices and Systems, 1996
Summary: The design of basic passive LC networks with particular attention to the ubiquitous \(\Pi\) network, is studied for conjugate matching any two impedances and meeting a specified loaded quality factor \(Q_0\). Algebraic design formulae are analytically demonstrated, which prove extremely simple.
Sun, Y., Fidler, J. K.
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Automatic impedance matching with a neural network

IEEE Microwave and Guided Wave Letters, 1993
A neural network is developed for the stub-tuning process. The determination of a double-stub solution by means of computer simulation is demonstrated. The applications to in-circuit, real-time microwave impedance matching are suggested. >
M. Vai, S. Prasad
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ANTENNA IMPEDANCE MATCHING WITH NEURAL NETWORKS

International Journal of Neural Systems, 2005
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.
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Reconfigurable Impedance Matching Networks With Controllable Phase Shift

IEEE Transactions on Circuits and Systems II: Express Briefs, 2018
Two kinds of reconfigurable impedance matching networks with controllable phase shift are proposed. The reconfigurable networks can match different loads with desired phase shift at center frequency and no extra phase shifter is needed. The two networks are realized by using varactor diodes and switches, respectively.
Tianyu Zhang, Wenquan Che, Haidong Chen, Quan Xue   +3 more
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Adaptive Impedance-Matching Techniques for ControllingLNetworks

IEEE Transactions on Circuits and Systems I: Regular Papers, 2010
The link quality of mobile phones suffers from antenna mismatch due to fluctuating body effects. Techniques for adaptive control of impedance-matching L networks are presented, which provide automatic compensation of antenna mismatch. To secure reliable convergence, a cascade of two control loops is proposed for independent control of the real and ...
Bezooijen, van, A., de Jongh, M.A., van Straten, F.E., Mahmoudi, R., Roermund, van, A.H.M.   +4 more
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Miniaturizing of a distributed MEMS impedance matching network

2013 International Workshop on Antenna Technology (iWAT), 2013
This paper shows a Micro-Electro-Mechanical-Systems (MEMS) impedance matching network based on a distributed MEMS transmission line (DMTL) for wireless communication devices operating in the frequency range from 1.8 GHz to 3.6 GHz. In the proposed design, the capacitive MEMS switches are periodically located on a meandered slow-wave (SW) structure ...
null Yi Chen, D. Manteuffel
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Impedance matching networks

2019
This chapter discusses mainly impedance matching circuits that are used to match two different terminations. Among the several impedance matching techniques, the available implementation technology is what usually determines the possible matching technique that can be used.
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Design software for impedance matching networks

7th International Conference on High Frequency Radio Systems and Techniques, 1997
Impedance matching networks are used extensively in radio transmission and receiving systems. A problem in designing pi-networks is that it is difficult to predict the impedance region of the pi-network given a set of practical network component values or ranges, and operating frequency range.
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Integrated filter and impedance matching network

The Journal of the Acoustical Society of America, 2005
A filter and impedance matching network uses acoustic resonators in place of capacitors. A resonator, e.g. FBAR, behaves similar to a capacitor outside of its resonant frequency and so does not impact the function of the network, outside of its resonant frequency.
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Capacitive power transfer with impedance matching network

2016 IEEE 12th International Colloquium on Signal Processing & Its Applications (CSPA), 2016
This paper presents the development of a new wireless power transfer technique using capacitive coupling. Capacitive power transfer (CPT) system has been introduced as an attractive alternative to the traditional inductive coupling method. This is due to the CPT benefits of simple topology, fewer components, better EMI performance and robustness to ...
Yusmarnita Yusop, Shakir Saat, Zamre Ghani, Huzaimah Husin, Sing Kiong Nguang   +4 more
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