Search Results - "Kracek, Jan"

Analysis of Capacitive Wireless Power Transfer by Kracek, Jan, Svanda, Milan

“…The analysis of capacitive wireless power transfer was conducted in a general manner. The circuit model of a capacitive wireless power transfer chain was…”
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Wireless Power Transmission: R&D Activities Within Europe by Borges Carvalho, Nuno, Georgiadis, Apostolos, Costanzo, Alessandra, Rogier, Hendrik, Collado, Ana, García, José Angel, Lucyszyn, Stepan, Mezzanotte, Paolo, Kracek, Jan, Masotti, Diego, Boaventura, Alírio J. Soares, de las Nieves Ruíz Lavin, Maria, Pinuela, Manuel, Yates, David C., Mitcheson, Paul D., Mazanek, Milos, Pankrac, Vitezslav

“…Wireless power transmission (WPT) is an emerging technology that is gaining increased visibility in recent years. Efficient WPT circuits, systems and…”
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Reconfigurable Antenna Array Testbed for Quantized Controlling by Pokorny, Michal, Vertat, Ivo, Panek, David, Hazdra, Pavel, Svanda, Milan, Kracek, Jan, Mazanek, Milos, Masopust, Jiri, Karban, Pavel

“…Contemporary beam-forming antenna arrays often use a large number of individual elements, sometimes hundreds or more, to achieve high gain for advanced…”
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Scalar Method for Reading of Chipless RFID Tags Based on Limited Ground Plane Backed Dipole Resonator Array by Kracek, Jan, Svanda, Milan, Hoffmann, Karel

“…In this paper, we propose a novel frequency-domain reading method for the chipless radio frequency identification (RFID) tags. It is based on a single scalar…”
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Superdirective Linear Dipole Array Optimization by Lonsky, Tomas, Kracek, Jan, Hazdra, Pavel

“…The theory of superdirective antenna arrays was discussed. The procedure for finding the excitation currents of fixed-geometry arrays, which maximizes the…”
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Characteristic Modes of Dipole Arrays by Lonsky, Tomas, Hazdra, Pavel, Kracek, Jan

“…The theory of characteristic modes is used to analyze antenna arrays. In particular, to study arrays of thin-wire dipoles backed by an infinite electric ground…”
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Antenna Array Pattern Synthesis Using an Iterative Method by Marak, Karoly, Kracek, Jan, Bilicz, Sandor

“…In this article, we investigate a novel iterative antenna array synthesis method. The method is based on the iterative addition of antenna array elements…”
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Chipless RFID Tag Based on Electrically Small Spiral Capacitively Loaded Dipole by Havlicek, Jaroslav, Svanda, Milan, Polivka, Milan, Machac, Jan, Kracek, Jan

“…This letter presents the novel 20 bit chipless radiofrequency identification transponder (tag) based on spiral capacitively loaded dipole scatterers of…”
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Implantable Semi-Active UHF RFID Tag With Inductive Wireless Power Transfer by Kracek, Jan, Svanda, Milan, Mazanek, Milos, Machac, Jan

“…The objective of this letter was to design a compact, battery-less system for an implantable semi-active UHF radio frequency identification (RFID) tag with…”
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Analysis of Magnetic Field of Thin-Wall Air Induction Coil of Arbitrary Cross Section With the Help of Scalar Magnetic Potential by Kracek, Jan, Pankrac, Vitezslav, Mazanek, Milos

“…The analysis of magnetic field of a thin-wall air induction coil with a shape of finite cylinder of arbitrary cross section is described. The result of the…”
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Simple Algorithms for the Calculation of the Intensity of the Magnetic Field of Current Loops and Thin-Wall Air Coils of a General Shape Using Magnetic Dipoles by Pankrac, V., Kracek, J.

“…This paper describes the method by which it is possible to construct simple algorithms for the calculation of the axial and transverse components of the…”
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Scattering Analysis of Thin, Single-layer Radiator with Parity, Time-reversal, Duality Symmetry by Kracek, Jan, Martini, Enrica, Maci, Stefano

“…Scattering analysis of a thin, single-layer radiator with parity, time-reversal, duality symmetry is discussed. The analysis is based on the network…”
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Fast Radiation Pattern Synthesis and Optimization of Monopole Circular Antenna Array by Travnicek, Samuel, Kracek, Jan, Hazdra, Pavel

“…The synthesis and optimization of the radiation pattern of a monopole circular antenna array are described. The method is fast and effective since it employs…”
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Wireless Power Transmission for Power Supply: State of Art by M. Mazanek, J. Kracek

“…The wireless power supply is motivated by simple and comfortable use of many small electric appliances with low power input. This paper reviews the concepts…”
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Compact Ka Band Orthomode Transducer with Conical Horn Antenna by Fojtik, Simon, Travnicek, Samuel, Hazdra, Pavel, Hradecky, Zdenek, Kracek, Jan

“…Orthomode transducers (OMTs) are essential mi-crowave devices designed to separate or mix orthogonal modes, often using waveguide technology. This paper…”
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Power Balance of Capacitive Wireless Power Transfer by Kracek, Jan, Svanda, Milan

“…The power balance analysis of the capacitive wireless power transfer was conducted in a general manner. The circuit model of a capacitive wireless power…”
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Wireless Power Transmission: R&D Activities Within Europe: SPECIAL ISSUE ON WIRELESS POWER TRANSFER by CARVALHO, Nuno Borges, GEORGIADIS, Apostolos, SOARES BOAVENTURA, Alírio J, RUIZ LAVIN, María de las Nieves, PINUELA, Manuel, YATES, David C, MITCHESON, Paul D, MAZANEK, Milos, PANKRAC, Vitezslav, COSTANZO, Alessandra, ROGIER, Hendrik, COLLADO, Ana, GARCIA, José Angel, LUCYSZYN, Stepan, MEZZANOTTE, Paolo, KRACEK, Jan, MASOTTI, Diego

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Fast Yagi-Uda Antenna Optimization by Lonsky, Tomas, Hazdra, Pavel, Kracek, Jan

“…An antenna arrays are widely used due to its properties in comparison to single element antenna. The possible achievable gain can be much higher, also one of…”
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The Directivity of two closely spaced isotropic radiators above PEC ground by Lonsky, Tomas, Hazdra, Pavel, Kracek, Jan

“…The concept of source currents of a radiating source can be employed to express its directivity in some particular cases analytically. For an antenna array,…”
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Superdirective Dipole Arrays by Lonsky, Tomas, Hazdra, Pavel, Kracek, Jan

“…In this paper we develop and utilize theory for finding excitation currents that maximize the directivity of arbitrary dipole arrays. Such excitation is known…”
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