Results 11 to 20 of about 15,703 (300)

Synthesis of a Transfer Function With Real Poles From Tabulated Frequency Response Data for Transmission-Line Impedance Modeling

open access: yesIEEE Access, 2022
Synthesis of a transfer function from tabulated frequency response data is an important topic in engineering. Especially in transmission line (TL) modeling, the impedance of a TL must be synthesized in the form of a transfer function of complex frequency,
Taku Noda
doaj   +2 more sources

An NDT Method for Measuring the Diameter and Embedment Depth of the Main Rebar in Cement Poles Based on Rotating Permanent Magnet Excitation [PDF]

open access: yesSensors
Cement poles serve as supporting components for transmission lines and are widely used in medium- and low-voltage transmission networks. The main rebar is the primary load-bearing structure of the pole, and the accurate measurement of its diameter and ...
Hejia Wang   +5 more
doaj   +2 more sources

Extension of pole differential current based relaying for bipolar LCC HVDC lines [PDF]

open access: yesScientific Reports
Line commutated converter (LCC) based high-voltage direct current (HVDC) transmission is characterized by long-distance power transfer, a complex and harsh corridor environment, and the rapid fault evolution of DC lines.
Ravi Shankar Tiwari   +3 more
doaj   +2 more sources

A robust method of the status monitoring of catenary poles installed along high-speed electrified train tracks

open access: yesResults in Engineering, 2021
Electric trains are considered one of the most eco-friendly and safest means of transportation. Catenary poles are used worldwide to support overhead power lines for electric trains. The performance of the catenary poles has an extensive influence on the
F. Alkam, T. Lahmer
doaj   +1 more source

Bandpass filters based on integrated aperture‐ and gap‐coupled discontinuities

open access: yesIET Communications, 2022
An electromagnetic coupling mechanism is discussed for distributed‐element aperture‐ and gap‐coupled discontinuities based on rigorous lumped‐element equivalent circuit analysis.
Amir Nosrati, Mahmoud Mohammad‐Taheri
doaj   +1 more source

Design of Broadband Band-Pass Filter with Cross-Coupled Line Structure

open access: yesInternational Journal of Antennas and Propagation, 2020
This paper presents a broadband band-pass filter with cross-coupled line structure. The cross-coupled line structure is composed of the parallel coupled lines and an open stub.
Dong-Sheng La   +4 more
doaj   +1 more source

Dual‐band bandpass filter based on a single triple‐mode ring resonator

open access: yesElectronics Letters, 2016
A novel dual‐band bandpass filter (BPF) based on a single triple‐mode ring resonator is proposed. The proposed BPF could provide three transmission poles for each passband to improve operating bandwidth.
Ming‐Chun Tang   +3 more
doaj   +1 more source

Wave excitation and dynamics in non-Hermitian disordered systems

open access: yesPhysical Review Research, 2022
Dynamic and steady-state aspects of wave propagation are deeply connected in lossless open systems in which the scattering matrix is unitary. There is then an equivalence among the energy excited within the medium through all channels, the Wigner time ...
Yiming Huang (黄一鸣)   +2 more
doaj   +1 more source

Development of glass fiber reinforced plastic poles for transmission and distribution lines

open access: yes, 2000
An extensive research project is currently being carried out at The University of Manitoba, Canada, to develop lightweight glass fiber reinforced plastic (GFRP) poles for use in transmission and distribution networks.
Dimos Polyzois   +2 more
core   +2 more sources

Dual-Polarized Frequency Selective Rasorber With Two Transmission Bands

open access: yesIEEE Access, 2019
This paper presents a novel dual-polarized frequency selective rasorber (FSR) with two transmission bands and two absorption bands. The FSR is a 2-D structure which is composed of a lossy and a lossless frequency selective surface (FSS) layer.
Ximeng Zhang   +5 more
doaj   +1 more source

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