Zobrazeno 1 - 10
of 99
pro vyhledávání: '"Hoton How"'
Publikováno v:
IEEE Transactions on Magnetics. 41:2349-2354
We have derived an expression for the effective dc field associated with magnetic easy-plane anisotropy. The field is expressed as the geometric mean between the applied field and the sum of the applied field and the anisotropy field, in agreement wi
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e47835c453b40fe8731d079d7dc0dbed
https://doi.org/10.1109/tmag.2005.852954
https://doi.org/10.1109/tmag.2005.852954
Publikováno v:
ResearcherID
Numerical calculations have been applied to a microstrip line fabricated on a Y-type hexaferrite substrate using the Green's function technique. The formulation allows the ferrite substrate to be magnetized along an arbitrary direction. Current poten
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4eca3cbd5a87481a8fbf24f7e90677a0
https://doi.org/10.1109/22.999140
https://doi.org/10.1109/22.999140
Publikováno v:
IEEE Transactions on Magnetics. 37:3941-3946
Single-crystal scandium-substituted barium hexaferrite crystals have been characterized and used in the fabrication of miniature monolithic circulators on silicon-glass wafers. The single crystal has an anisotropy field of 8700 Oe, saturation magneti
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::0a77607e9fc372f582d4c8379cf9eddc
https://doi.org/10.1109/20.966130
https://doi.org/10.1109/20.966130
Autor:
Leo C. Kempel, Carmine Vittoria, E. Hokanson, M.H. Champion, Keith D. Trott, Ping Shi, Hoton How
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 48:1544-1549
A phased array antenna containing four linear microstrip patch elements has been fabricated and tested. The elements were fed through single-crystal yttrium-iron-garnet (YIG) phase shifters. By varying the bias magnetic field, the input phases to the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d2e53eca3d92f68e19121348cc8ff238
https://doi.org/10.1109/22.869006
https://doi.org/10.1109/22.869006
Autor:
Nicol E. McGruer, Carmine Vittoria, R. Schmidt, Steven A. Oliver, P.M. Zavracky, Stephen W. McKnight, Hoton How
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 47:1982-1989
We have analytically formulated the problem that a ferrite circulator junction is biased by a nonuniform magnetic field. Interport impedances of the junction can, therefore, be solved numerically. Nonuniform-bias field will reduce the transmission ba
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::192c6346d0b4315f02486befb0b6c2ab
https://doi.org/10.1109/22.795072
https://doi.org/10.1109/22.795072
Autor:
Steven A. Oliver, Hoton How, Nicol E. McGruer, Stephen W. McKnight, R. Schmidt, Paul M. Zavracky, Carmine Vittoria
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 46:1645-1653
We have calculated the S-parameters and losses in ferrite-film-junction circulators using a new effective-field theory assuming TEM-like propagation. Conductivity loss dominates the dielectric and magnetic losses in Y-junction circulators fabricated
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::cb0f7f727a185d8335df82fc57970f15
https://doi.org/10.1109/22.734547
https://doi.org/10.1109/22.734547
Publikováno v:
IEEE Transactions on Magnetics. 33:735-738
The steering properties of a circular patch antenna array fabricated on a yttrium-iron-garnet substrate containing 6/spl times/6 elements have been calculated. The formulation assumes the interaction between patch elements can be neglected. Also, the
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::73549707a75019af25b35b837d2e1154
https://doi.org/10.1109/20.560106
https://doi.org/10.1109/20.560106
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 45:245-252
We have solved the nonlinear intermodulation coupling problem of a planar ferrite junction containing 3N ports. The coupling is represented as driving currents within the junction, and the induced fields can be solved by using the radiation and the b
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::01f66b136b0a7f005d6217281cf1b721
https://doi.org/10.1109/22.557606
https://doi.org/10.1109/22.557606
Publikováno v:
IEEE Transactions on Microwave Theory and Techniques. 43:1620-1623
Frequency tunable millimeter wave filters are considered to be fabricated using metallic ferromagnetic thin films. Whereas conventional filters which include insulating ferrite materials utilize the phenomenon of ferromagnetic resonance (FMR), our de
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::1b9c0ed380eddbb7aab205fdb18a005c
https://doi.org/10.1109/22.392927
https://doi.org/10.1109/22.392927
Publikováno v:
IEEE Transactions on Magnetics. 31:997-1002
The operation of a ferrite drop-in circulator is theoretically predicted and experimentally confirmed. The cavity model is applied both to the ferrite disc and the dielectric region directly below the ferrite disc. The standing-wave condition require
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::3310c177ffbe6f548fbba67544ef86de
https://doi.org/10.1109/20.364774
https://doi.org/10.1109/20.364774