Zobrazeno 1 - 10
of 973
pro vyhledávání: '"R.E. Collin"'
Autor:
R.C. Hansen, R.E. Collin
Publikováno v:
IEEE Antennas and Propagation Magazine. 51:38-41
The Chu fundamental limitation on Q for electrically small antennas is well known and widely used. However, Chu did not include energy stored inside the hypothetical enveloping sphere. Exact calculation of total stored energy by Thal gives a new Q, w
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::b179b650e90b82384262b38f7df6a404
https://doi.org/10.1109/map.2009.5432037
https://doi.org/10.1109/map.2009.5432037
Autor:
R.E. Collin
Publikováno v:
IEEE Antennas and Propagation Magazine. 46:64-79
This paper presents a contemporary solution to the problem of radiation from a vertical Hertzian dipole over a lossy earth. Sommerfeld's 1909 solution to the problem is re-examined. It is demonstrated that a change in sign in the square root of the n
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5e001629a9d60221aba62f86062aab75
https://doi.org/10.1109/map.2004.1305535
https://doi.org/10.1109/map.2004.1305535
Autor:
R.E. Collin
Publikováno v:
IEEE Antennas and Propagation Magazine. 45:119-124
The investigation carried out in this paper was stimulated by a recent paper published by Love (2002), in which the appropriateness of the use of the Thevenin and Norton equivalent circuits for a receiving antenna was questioned. A review of the avai
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::fb7fdfbe61c041f53cf0683172d83fc1
https://doi.org/10.1109/map.2003.1203128
https://doi.org/10.1109/map.2003.1203128
Autor:
R.E. Collin
Publikováno v:
Proceedings of the IEEE. 87:508-514
The early history of waveguides is reviewed. This is followed by a brief review of the events that led Southworth to undertake an investigation of waveguides, along with some of the difficulties that he encountered. The rediscovery of the hollow tube
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aa868da608fd0fcde437b4fc62628ce7
https://doi.org/10.1109/jproc.1999.747871
https://doi.org/10.1109/jproc.1999.747871
Autor:
R.E. Collin
Publikováno v:
Proceedings of the IEEE. 85:301-305
This paper provides an introduction to the paper presented by Prof. Pupin, which deals with a method of measuring the radiation resistance of an antenna. In order to provide a perspective for the significance of Pupin's paper, a brief review of the s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7530f2314acdfc63c95754f2f993390f
https://doi.org/10.1109/jproc.1997.554224
https://doi.org/10.1109/jproc.1997.554224
Autor:
R.E. Collin, Augusto García-Valenzuela
Publikováno v:
Journal of Electromagnetic Waves and Applications. 11:37-63
We present a new analytical approach for scattering from perfectly conducting surfaces that are rough in one dimension. The method is based on expanding the Helmholtz equation using a set of local basis functions. The transformed equations contain th
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::5ea410ba08db1563753801761987eae9
https://doi.org/10.1163/156939397x00639
https://doi.org/10.1163/156939397x00639
Autor:
R.E. Collin, H. Vesselle
Publikováno v:
IEEE Transactions on Biomedical Engineering. 42:497-506
Surface coils are used in magnetic resonance imaging (MRI) for their high signal-to-noise ratio (S/N) when placed near the-region to be imaged. However, their optimization for high field MRI systems is hampered by the lack of understanding of the ele
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::10a74348c1113fcc944926dde1ff02d8
https://doi.org/10.1109/10.376154
https://doi.org/10.1109/10.376154
Autor:
H. Vesselle, R.E. Collin
Publikováno v:
IEEE Transactions on Biomedical Engineering. 42:507-520
For pt. I see ibid., vol. 42, no. 5, p. 497-506 (1995). In pt. I the authors developed complete expressions for the power dissipated by and for the signal-to-noise ratio (S/N) of a coil of arbitrary geometry facing an infinite lossy dielectric cylind
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::8ca437877853d8c785d3b9e9a221d0ca
https://doi.org/10.1109/10.376155
https://doi.org/10.1109/10.376155
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 41:2067-2073
A technique for the full-wave characterization of microstrip open end discontinuities fabricated on uniaxial anisotropic substrates using potential theory is presented. The substrate to be analyzed is enclosed in a cut-off waveguide, with the anisotr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d74813701acdf2f11c52b7cfbf04b1ff
https://doi.org/10.1109/22.260688
https://doi.org/10.1109/22.260688
Autor:
R.E. Collin
Publikováno v:
IEEE Antennas and Propagation Magazine. 32:27-31
The role of both past and current analysis in computer-based electromagnetics research is examined. Some observations on the current status of computer-based solutions are presented. It is concluded that analysis will remain an essential tool for mak
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e68b6a3f70806f966892622c63b91a83
https://doi.org/10.1109/74.80555
https://doi.org/10.1109/74.80555