Zobrazeno 1 - 10
of 10
pro vyhledávání: '"A. U. A. W. Gunawardena"'
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 24:1923-1930
Condition assessment of insulation is widely used to identify the state of aging of power transformers. Traditionally, condition assessment is done using dielectric response measurements conducted at low frequencies. However, due to long testing time
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a96f7271268df8802a3a53c9ea18137e
https://doi.org/10.1109/tdei.2017.006322
https://doi.org/10.1109/tdei.2017.006322
Autor:
W. M. S. C. Samarasinghe, Manjula Fernando, J.R.S.S. Kumara, A. U. A. W. Gunawardena, A. C. M. Ahamed
Publikováno v:
IEEE Transactions on Dielectrics and Electrical Insulation. 23:1409-1417
Increased moisture content (MC) is considered as one of the main factors for the failure of transformer insulation. This paper presents a method of estimating the MC of a transformer pressboard insulation based on the relative permittivity and loss t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::70bb66eef6c21e2e86cca261da41a44a
https://doi.org/10.1109/tdei.2015.005539
https://doi.org/10.1109/tdei.2015.005539
Publikováno v:
ICIIS
In this paper, a novel multi-section coupled line substrate integrated coaxial line (SICL) coupler design is presented. The proposed SICL coupler features high directivity when compared to microstrip designs as it supports TEM propagation mode and in
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::56f7a75ade47eedf7ccc96f48b6b23d3
https://doi.org/10.1109/iciinfs.2017.8300414
https://doi.org/10.1109/iciinfs.2017.8300414
Publikováno v:
2015 IEEE 10th International Conference on Industrial and Information Systems (ICIIS).
Measurement of dielectric properties of copper clad printed circuit boards using microstrip ring resonators is a well-studied problem widely in use. The problem addressed here is different from this as the sample under test is difficult to copper cla
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1bbae84b52925d6f0294ec00709bee24
https://doi.org/10.1109/iciinfs.2015.7399068
https://doi.org/10.1109/iciinfs.2015.7399068
Publikováno v:
IEEE Transactions on Geoscience and Remote Sensing. 42:732-742
Resistor-loaded bow-tie antennas are analyzed thoroughly to find out their performance on ground-penetrating radar (GPR) applications. The analysis is done with the finite-difference time-domain (FDTD) technique. The antenna is pulse driven and enclo
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b88d9838e556d973d9c6cda9ab002869
https://doi.org/10.1109/tgrs.2003.819442
https://doi.org/10.1109/tgrs.2003.819442
Publikováno v:
2014 9th International Conference on Industrial and Information Systems (ICIIS).
The design and simulation of a wideband coupler for improved directivity is investigated. The coupled line coupler is considered for weak (or lose) coupling purposes. An improved bandwidth performance is achieved by increasing the number of stages of
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7c4945ee541a7b24cebb0cdc6a250769
https://doi.org/10.1109/iciinfs.2014.7036524
https://doi.org/10.1109/iciinfs.2014.7036524
Autor:
Disala Uduwawala, H. M. P. B. Ranasinghe, U. I. P. Senarathne, S. M. P. Senanayake, A. U. A. W. Gunawardena
Publikováno v:
2013 IEEE 8th International Conference on Industrial and Information Systems.
The ground penetrating radar (GPR) designs demand antennas with ultra wide bandwidths (UWB). Thus the conventional antennas such as dipoles cannot be used effectively. The GPR antennas are expensive. In this paper, the feasibility of building a low c
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1a164cac50379da49c207cfe6c3e4a94
https://doi.org/10.1109/iciinfs.2013.6732012
https://doi.org/10.1109/iciinfs.2013.6732012
Autor:
K. M. M. W. N. Narampanawe, H. M. P. B. Ranasinghe, A. U. A. W. Gunawardena, S. M. P. Senanayake, U. I. P. Senaratne
Publikováno v:
2013 IEEE 8th International Conference on Industrial and Information Systems.
The ground penetrating radar (GPR) is a specialized radar used to obtain images of the objects buried under the ground surface. In this study, we discuss an experimental GPR setup that can be built using a vector network analyzer. The objective was t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d0e2f70180b8d0d56703d54009bce9fa
https://doi.org/10.1109/iciinfs.2013.6732011
https://doi.org/10.1109/iciinfs.2013.6732011
A Fully Three-Dimensional Simulation of a Ground-Penetrating Radar over Lossy and Dispersive Grounds
Publikováno v:
2006 International Conference on Industrial and Information Systems.
A 3-D finite difference time domain (FDTD) simulation is done on a ground penetrating radar (GPR) operating above lossy and dispersive grounds. The radar consists of a pair of resistor-loaded bow-tie antennas and the ground consists of Puerto Rico cl
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3286140d84fbe7c197d272ec8d5f2614
https://doi.org/10.1109/iciinfs.2006.347138
https://doi.org/10.1109/iciinfs.2006.347138