The Experts below are selected from a list of 11028 Experts worldwide ranked by ideXlab platform
Sergey Tkachenko - One of the best experts on this subject based on the ideXlab platform.
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Transmission Line super Theory as antenna Theory for Linear structures
2014Co-Authors: Ronald Rambousky, J Nitsch, Sergey TkachenkoAbstract:A new generalized Transmission-Line Theory is presented to treat multiconductor as well as antenna systems. Maxwell’s equations are cast into the form of classical telegrapher’s equations. Two quite different examples are calculated to illustrate the wide use of this Theory.
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High-Frequency Multiconductor Transmission-Line Theory
2010Co-Authors: Jurgen Nitsch, Sergey TkachenkoAbstract:This work presents a thorough derivation of the full-wave Transmission-Line equations on the basis of Maxwell’s Theory. The multiconductor system is assumed to be composed of nonuniform thin wires. It is shown that the mixed potential integral equations are equivalent to generalized telegrapher equations. Novel, exact, and compact expressions for the multiconductor Transmission-Line parameters are derived, and their connection to radiation effects is shown. Iteration and perturbation procedures are proposed for the solution of the generalized Transmission-Line equations.
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full wave Transmission Line Theory for thick cylindrical wires
2009Co-Authors: J Nitsch, Sergey TkachenkoAbstract:The Full Wave Transmission Line Theory (FWTL) describes the propagation of high-frequency signals along conductors. It is represented in the modal and global representation. In the present paper we generalize the FWTL for an electrically thick wire, when besides the axial also the azimuthal component of the current and the proximity effect become important.
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physical interpretation of the parameters in the full wave Transmission Line Theory
2009Co-Authors: J Nitsch, Sergey TkachenkoAbstract:The Full Wave Transmission Line Theory (FWTL) generalizes the classical Transmission Line approximation (TL) for high frequencies when radiation effects occur. In the present paper we develop the FWTL for a homogeneous Line with two lumped sources. For this case the calculation can be curried out in explicit form, and it becomes possible to install the connection between the parameters of the FWTL and the current modes (TEM mode, leaky modes and radiation mode) which arise near the Line non-uniformities (lumped sources).
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newest developments in Transmission Line Theory and applications
2007Co-Authors: Jurgen Nitsch, Sergey TkachenkoAbstract:For a finite thin wire of arbitrary form near the ground we generalized the concept of modal parameters for a full-wave Transmission-Line Theory, investigated earlier for Lines with high symmetries (straight wire1,2 and circle wire3). These parameters are contained in the coupling equations for each mode. They are complex-valued, frequency and gauge dependent, and they depend on the modal number. With the concept of generalized Transmission-Line (TL) parameters it is shown that a thick wire can be treated as a multiconductor Transmission Line.
Kenji Sato - One of the best experts on this subject based on the ideXlab platform.
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multiconductor Transmission Line Theory with electromagnetic radiation
2012Co-Authors: H Toki, Kenji SatoAbstract:We have constructed a new multiconductor Transmission-Line (MTL) Theory with electromagnetic radiation starting from the Maxwell equations. We express scalar and vector potentials in terms of retardation charges and currents and complete a set of MTL integro-differential equations by using the continuity equation and the ohmic-conductor equation with resistance. We naturally obtain coefficients of potential P and inductance L in the transverse electromagnetic (TEM) mode as singular terms of the retardation scalar and vector potentials. We first analyze a Linear one-Line antenna system and show that the remaining scalar and vector potentials after the removal of the TEM mode terms are responsible for electromagnetic radiation. We then discuss the MTL equation for a two-conductor Transmission-Line system. As a realistic case, we discuss a three-conductor Transmission-Line system to enable the inclusion of the effect of circumstances. We demonstrate that a three-conductor Transmission-Line system with a symm...
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three conductor Transmission Line Theory and origin of electromagnetic radiation and noise
2009Co-Authors: H Toki, Kenji SatoAbstract:We construct a new multiconductor Transmission-Line Theory with coefficients of potential and inductance. We provide coupled differential equations for potential and electric current with coefficients that are given by geometrical configurations of a Transmission-Line system. We provide a general solution to coupled differential equations explicitly for three-conductor Transmission-Lines. We derive coupled differential equations for the normal and common modes of Lines 1 and 2, where common-mode current goes through Line 3. The common mode acts as an antenna for radiating electromagnetic waves and any electromagnetic devices and conductors placed around the major conductor Transmission-Lines (Lines 1 and 2) act as receivers of electromagnetic waves. This is the source of electromagnetic noise in the circumstance around the Transmission-Line system. The Transmission-Line system receives noise from the circumstance through the common mode.
J Nitsch - One of the best experts on this subject based on the ideXlab platform.
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Transmission Line super Theory as antenna Theory for Linear structures
2014Co-Authors: Ronald Rambousky, J Nitsch, Sergey TkachenkoAbstract:A new generalized Transmission-Line Theory is presented to treat multiconductor as well as antenna systems. Maxwell’s equations are cast into the form of classical telegrapher’s equations. Two quite different examples are calculated to illustrate the wide use of this Theory.
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full wave Transmission Line Theory for thick cylindrical wires
2009Co-Authors: J Nitsch, Sergey TkachenkoAbstract:The Full Wave Transmission Line Theory (FWTL) describes the propagation of high-frequency signals along conductors. It is represented in the modal and global representation. In the present paper we generalize the FWTL for an electrically thick wire, when besides the axial also the azimuthal component of the current and the proximity effect become important.
-
physical interpretation of the parameters in the full wave Transmission Line Theory
2009Co-Authors: J Nitsch, Sergey TkachenkoAbstract:The Full Wave Transmission Line Theory (FWTL) generalizes the classical Transmission Line approximation (TL) for high frequencies when radiation effects occur. In the present paper we develop the FWTL for a homogeneous Line with two lumped sources. For this case the calculation can be curried out in explicit form, and it becomes possible to install the connection between the parameters of the FWTL and the current modes (TEM mode, leaky modes and radiation mode) which arise near the Line non-uniformities (lumped sources).
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analytical solutions in nonuniform multiconductor Transmission Line Theory
1999Co-Authors: J Nitsch, Frank GronwaldAbstract:The Theory of nonuniform multiconductor Transmission Lines (NMTLs) is characterized by generalized telegrapher equations. Formally, these are straightforwardly solved, but an explicit construction of the solution turns out to be mathematically demanding. This paper discusses and reports on recently proposed reduction schemes that simplify the structure of the solution and make it suitable for direct evaluation. Applications of these results are described, as well as field theoretical extensions of the existing formalism.
Shuzhang Zhang - One of the best experts on this subject based on the ideXlab platform.
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modal Transmission Line Theory of multilayered grating structures
1996Co-Authors: T Tamir, Shuzhang ZhangAbstract:Solutions to problems involving the scattering and guiding of waves by multilayered grating configurations can be phrased in rigorous modal terms. We show that such a modal solution can be represented by electrical Transmission-Line networks, which are generalized forms of simpler conventional circuits. This approach brings considerable physical insight into the grating diffraction process and facilitates the derivation of the fields everywhere. In particular, the Transmission-Line representation can serve as a template for computational algorithms that systematically evaluate dispersion properties, radiation effects, wave coupling and other characteristics that are not readily obtained by other methods. Examples illustrating the application of the present approach are given for waves guided by grating configurations encountered in optoelectronic devices.
Jurgen Nitsch - One of the best experts on this subject based on the ideXlab platform.
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High-Frequency Multiconductor Transmission-Line Theory
2010Co-Authors: Jurgen Nitsch, Sergey TkachenkoAbstract:This work presents a thorough derivation of the full-wave Transmission-Line equations on the basis of Maxwell’s Theory. The multiconductor system is assumed to be composed of nonuniform thin wires. It is shown that the mixed potential integral equations are equivalent to generalized telegrapher equations. Novel, exact, and compact expressions for the multiconductor Transmission-Line parameters are derived, and their connection to radiation effects is shown. Iteration and perturbation procedures are proposed for the solution of the generalized Transmission-Line equations.
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newest developments in Transmission Line Theory and applications
2007Co-Authors: Jurgen Nitsch, Sergey TkachenkoAbstract:For a finite thin wire of arbitrary form near the ground we generalized the concept of modal parameters for a full-wave Transmission-Line Theory, investigated earlier for Lines with high symmetries (straight wire1,2 and circle wire3). These parameters are contained in the coupling equations for each mode. They are complex-valued, frequency and gauge dependent, and they depend on the modal number. With the concept of generalized Transmission-Line (TL) parameters it is shown that a thick wire can be treated as a multiconductor Transmission Line.
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generalized Transmission Line Theory for the treatment of nonuniform multiconductor Transmission Lines
2003Co-Authors: Heiko Haase, Jurgen NitschAbstract:This paper presents a generalized Transmission-Line Theory which is useful to describe the wave propagation along almost arbitrary three-dimensional wire structures. In contrast to the classical Transmission-Line Theory this new approach is an approximate full-wave description based on generalized telegrapher's equations. Whereas the mathematical structure of the classical telegrapher's equations is preserved, the coefficients (the per-unit-length parameters) are generalized in order to represent the intrinsic behavior of the wire structure. MoM simulations were performed to validate the predicted data.
