Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Benjamin Crowgey"'
Autor:
Leo C. Kempel, Amin Tayebi, Michael J. Havrilla, Benjamin Crowgey, Edward J. Rothwell, Balasubramaniam Shanker, Junyan Tang
Publikováno v:
IEEE Transactions on Antennas and Propagation. 65:5279-5288
A methodology for measuring the constitutive parameters of a ferrite material is presented. This method can be used to assist the prediction of the properties of tunable antennas that use ferrite material as a substrate or tuning component. A nontrad
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d8716c8f27c97004447a4b98acdd34a0
https://doi.org/10.1109/tap.2017.2736530
https://doi.org/10.1109/tap.2017.2736530
Publikováno v:
Progress In Electromagnetics Research. 150:29-40
A waveguide standard is introduced for validation purposes on the measurement accuracy of electric and magnetic properties of materials at microwave frequencies. The standard acts as a surrogate material with both electric and magnetic properties and
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::4850f3680a65504b53fa39465dc26e8c
https://doi.org/10.2528/pier14100504
https://doi.org/10.2528/pier14100504
Publikováno v:
NDT & E International. 62:106-114
Non-Destructive Evaluation (NDE) methods are used to inspect materials without damaging their usefulness. The key problem in NDE is the inverse problem which involves reconstructing materials’ physical profiles, like inner discontinuity etc., using
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::ce513b29e134f4e030b2c4e0dc540ce8
https://doi.org/10.1016/j.ndteint.2013.11.003
https://doi.org/10.1016/j.ndteint.2013.11.003
Publikováno v:
J. Mater. Chem. C. 2:756-763
Flexible magneto-dielectric composites were prepared by dispersing high saturation magnetization (Ms), low coercivity (Hc), air-stable, Fe/citrate nanoparticles and heterostructures of Fe/Ag core–shell nanoparticles in an elastomer (polydimethylsil
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::17b4d1e29bfdd25bb190902973a3ca9c
https://doi.org/10.1039/c3tc32113d
https://doi.org/10.1039/c3tc32113d
Autor:
Michael J. Havrilla, Balasubramaniam Shanker, O. Tuncer, Leo C. Kempel, Junyan Tang, Edward J. Rothwell, Benjamin Crowgey
Publikováno v:
IEEE Transactions on Instrumentation and Measurement. 62:2739-2750
A technique is introduced for measuring the electromagnetic properties of a biaxial anisotropic material sample using a reduced-aperture waveguide sample holder designed to accommodate a cubical sample. All the tensor material parameters can be deter
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::6db026348da1a6fef3aa0d669d8f5f5e
https://doi.org/10.1109/tim.2013.2259752
https://doi.org/10.1109/tim.2013.2259752
Publikováno v:
Progress In Electromagnetics Research. 110:403-419
A canonical problem is used to investigate the efiects of various radar parameters on the performance of both stepped- frequency and short-pulse through-barrier radar imaging systems. For simplicity, a two-dimensional problem is considered, consistin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d9254297ba73a5964b0219800750699b
https://doi.org/10.2528/pier10091306
https://doi.org/10.2528/pier10091306
Publikováno v:
Progress In Electromagnetics Research. 97:11-25
A simple, closed-form expression for the time-domain re∞ection coe-cient for a pulsed TE10-mode wave incident on a dielectric material discontinuity in a rectangular waveguide is presented. This formula may be used to represent the transient fleld
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::aab3b2852dabaea9e87462eea0e2035a
https://doi.org/10.2528/pier09090905
https://doi.org/10.2528/pier09090905
Autor:
Edward J. Rothwell, Yuriy Goykhman, Andrew R. Brown, Benjamin Crowgey, Prem Chahal, Tayfun Ozdemir
Publikováno v:
2015 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting.
A frequency tunable antenna for 4G global roaming devices operating in the 2.3–2.7GHz band is presented. Both the design and manufacturing methods are described and measured data are provided. Antenna is a half-patch with a reconfigurable aperture
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::84a77f894790b6aabe5536e705a49ca3
https://doi.org/10.1109/aps.2015.7304955
https://doi.org/10.1109/aps.2015.7304955
Autor:
Edward J. Rothwell, Kazuko Fuchi, Junyan Tang, Benjamin Crowgey, Alejandro R. Diaz, Raoul O. Ouedraogo
Publikováno v:
IEEE Antennas and Wireless Propagation Letters. 11:473-475
A foldable frequency selective surface (FSS) is introduced that may be tuned by changing the folding state. The FSS comprises periodic elements arranged in an origami-like fashion on a dielectric sheet. By folding and unfolding the FSS, the interacti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::961a0ca7b00f1bf453146fe00ab43c37
https://doi.org/10.1109/lawp.2012.2196489
https://doi.org/10.1109/lawp.2012.2196489
Publikováno v:
2014 IEEE Antennas and Propagation Society International Symposium (APSURSI).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::7159b26707d74d5f73e208aaddd6f716
https://doi.org/10.1109/aps.2014.6904423
https://doi.org/10.1109/aps.2014.6904423