The Experts below are selected from a list of 294 Experts worldwide ranked by ideXlab platform
John Svoboda - One of the best experts on this subject based on the ideXlab platform.
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Transmission Line Security Monitor: Final Report
2011Co-Authors: John SvobodaAbstract:The Electric Power Transmission Line Security Monitor System Operational Test is a project funded by the Technical Support Working Group (TSWG). TSWG operates under the Combating Terrorism Technical Support Office that functions under the Department of Defense. The Transmission Line Security Monitor System is based on technology developed by Idaho National Laboratory. The technology provides a means for real-time monitoring of physical threats and/or damage to electrical Transmission Line towers and conductors as well as providing operational parameters to Transmission Line operators to optimize Transmission Line operation. The end use is for monitoring long stretches of Transmission Lines that deliver electrical power from remote generating stations to cities and industry. These Transmission Lines are generally located in remote Transmission Line corridors where security infrastructure may not exist. Security and operational sensors in the sensor platform on the conductors take power from the Transmission Line and relay security and operational information to operations personnel hundreds of miles away without relying on existing infrastructure. Initiated on May 25, 2007, this project resulted in pre-production units tested in realistic operational environments during 2010. A technology licensee, Lindsey Manufacturing of Azusa California, is assisting in design, testing, and ultimately production. The platform was originallymore » designed for a security monitoring mission, but it has been enhanced to include important operational features desired by electrical utilities.« less
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Transmission Line Security Monitor: Final Report
2011Co-Authors: John SvobodaAbstract:The Electric Power Transmission Line Security Monitor System Operational Test is a project funded by the Technical Support Working Group (TSWG). TSWG operates under the Combating Terrorism Technical Support Office that functions under the Department of Defense. The Transmission Line Security Monitor System is based on technology developed by Idaho National Laboratory. The technology provides a means for real-time monitoring of physical threats and/or damage to electrical Transmission Line towers and conductors as well as providing operational parameters to Transmission Line operators to optimize Transmission Line operation. The end use is for monitoring long stretches of Transmission Lines that deliver electrical power from remote generating stations to cities and industry. These Transmission Lines are generally located in remote Transmission Line corridors where security infrastructure may not exist. Security and operational sensors in the sensor platform on the conductors take power from the Transmission Line and relay security and operational information to operations personnel hundreds of miles away without relying on existing infrastructure. Initiated on May 25, 2007, this project resulted in pre-production units tested in realistic operational environments during 2010. A technology licensee, Lindsey Manufacturing of Azusa California, is assisting in design, testing, and ultimately production. The platform was originally designed for a security monitoring mission, but it has been enhanced to include important operational features desired by electrical utilities
Heikki Seppä - One of the best experts on this subject based on the ideXlab platform.
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Analysis of a MEMS Transmission Line
IEEE Transactions on Microwave Theory and Techniques, 2003Co-Authors: Ari Alastalo, Tomi Mattila, Heikki SeppäAbstract:A microelectromechanical system (MEMS) sound waveguide is considered as a Transmission Line for RF signals. We analyze a device geometry of a straight one-dimensional microsize silicon rod, where a longitudinal acoustic wave is generated and detected using capacitive transducers. Linear, isotropic, and nondispersive acoustic-wave propagation is assumed. Based on the calculation of the electromechanical impedance, an electrical equivalent model is derived for the acoustic Transmission Line. A numerical example and a comparison to measured properties of a MEMS-Transmission-Line resonator shows that the characteristic impedance level of the waveguide is typically high, which causes challenges for matched termination. Solutions to overcome the matching problems are discussed.
Feng Da Zheng - One of the best experts on this subject based on the ideXlab platform.
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A new Transmission Line and its analysis
1991 International Conference on Circuits and Systems, 1Co-Authors: Feng Da ZhengAbstract:The author introduces a new Transmission Line realized by a coaxial Line that contains the three concentric cylindrical conductors and the two intermediate dielectric media. Using simple analysis one can predict that this Transmission Line has two propagation constants, four characteristic impedances and four equations governing the distribution of the longitudinal currents and the two transverse voltages alone Line. The author also gives a application of the new Transmission Line, namely it can be used as a more precise coaxial cable model of the internode body for the myelinated neural axon. >
Ari Alastalo - One of the best experts on this subject based on the ideXlab platform.
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Analysis of a MEMS Transmission Line
IEEE Transactions on Microwave Theory and Techniques, 2003Co-Authors: Ari Alastalo, Tomi Mattila, Heikki SeppäAbstract:A microelectromechanical system (MEMS) sound waveguide is considered as a Transmission Line for RF signals. We analyze a device geometry of a straight one-dimensional microsize silicon rod, where a longitudinal acoustic wave is generated and detected using capacitive transducers. Linear, isotropic, and nondispersive acoustic-wave propagation is assumed. Based on the calculation of the electromechanical impedance, an electrical equivalent model is derived for the acoustic Transmission Line. A numerical example and a comparison to measured properties of a MEMS-Transmission-Line resonator shows that the characteristic impedance level of the waveguide is typically high, which causes challenges for matched termination. Solutions to overcome the matching problems are discussed.
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
Journal of the Physical Society of Japan, 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...
