Results 211 to 220 of about 6,442 (247)
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Semicircular Elements Induced by Projections on Separable Hilbert Spaces
Operator Theory: Advances and Applications, 2019In this paper, we construct semicircular elements from mutually orthogonal projections on the separable Hilbert space l2(N0). They act on semicircular elements.
Ilwoo Cho +2 more
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Catalan Numbers and Free Distributions of Mutually Free Multi Semicircular Elements
Complex Analysis and Operator TheoryzbMATH Open Web Interface contents unavailable due to conflicting licenses.
Ilwoo Cho, Cho Ilwoo
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2017 International Conference on Electronics Packaging (ICEP), 2017
In recent years, radio communication using ultrawideband (UWB) technology has shown great promise for ubiquitous application. We have already investigated and developed the cross type of unbalanced dipole antenna with semicircular and trapezoidal radiating elements, and we have confirmed that the cross type of unbalanced dipole antenna performed with ...
Kohji Koshiji, Fukuro Koshiji
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In recent years, radio communication using ultrawideband (UWB) technology has shown great promise for ubiquitous application. We have already investigated and developed the cross type of unbalanced dipole antenna with semicircular and trapezoidal radiating elements, and we have confirmed that the cross type of unbalanced dipole antenna performed with ...
Kohji Koshiji, Fukuro Koshiji
exaly +2 more sources
2015 IEEE International Conference on Communication Problem-Solving (ICCP), 2015
In the paper, the planar parasitic coupling multi-resonator configuration yielding broad BW (Bandwidth) for wireless communication system is presented. The proposed antenna, a rectangular driven element and the same two semicircular parasitic elements with a pair of arc-shaped slots, fed by a coaxial probe, is etched on a thin circular dielectric ...
Jianqiang Hou, Bing Zou
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In the paper, the planar parasitic coupling multi-resonator configuration yielding broad BW (Bandwidth) for wireless communication system is presented. The proposed antenna, a rectangular driven element and the same two semicircular parasitic elements with a pair of arc-shaped slots, fed by a coaxial probe, is etched on a thin circular dielectric ...
Jianqiang Hou, Bing Zou
exaly +2 more sources
On Semicircular Elements Induced by Connected Finite Graphs
Mathematics Online First Collections, 2023Ilwoo Cho +2 more
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A semicircular planar inverted-F antenna with a parasitic element
The 8th International Conference on Communication Systems, 2002. ICCS 2002., 2003A semicircular planar inverted-F antenna with a parasitic element is introduced and its characteristics are investigated numerically and experimentally. By setting the two resonant frequencies close together the VSWR bandwidth of 32% is obtained.
T. Okuno, K. Hirasawa
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2021 International Conference on Electronics Packaging (ICEP), 2021
In this paper, a circularly-polarized antenna operating in a broadband has been studied by modifying the shape of the unbalanced dipole antenna consisting of semicircular and trapezoidal elements, well-known to have broadband characteristics. As a result, it was confirmed that the antenna studied in this paper operated with S 11 < −9.8 dB and axial ...
Hironori Takahashi +2 more
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In this paper, a circularly-polarized antenna operating in a broadband has been studied by modifying the shape of the unbalanced dipole antenna consisting of semicircular and trapezoidal elements, well-known to have broadband characteristics. As a result, it was confirmed that the antenna studied in this paper operated with S 11 < −9.8 dB and axial ...
Hironori Takahashi +2 more
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Finite element simulation of elastic-creep growth of a semicircular surface crack
Engineering Fracture Mechanics, 1988Abstract An initially semicircular crack loaded in Mode I tension with a material model similar to 316 SS at 600°C has been simulated using the finite element method. Two techniques have been used to predict creep crack growth. One technique assumes that the rate of crack growth does not effect the crack tip stress and strain rate distributions and ...
S.D. Smith, J.J. Webster, T.H. Hyde
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2021
In this paper, starting from a \(C^{*}\)-probability space \(\mathfrak {X}_{\varphi } \) generated by mutually free, countable-infinitely many semicircular elements \(\{s_{n}\}_{n=1}^{\infty }\), the free distributional data on \(\mathfrak { X}_{\varphi }\) are characterized by joint free moments of \(\{s_{n}\}_{n=1}^{\infty }\); and then, a certain ...
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In this paper, starting from a \(C^{*}\)-probability space \(\mathfrak {X}_{\varphi } \) generated by mutually free, countable-infinitely many semicircular elements \(\{s_{n}\}_{n=1}^{\infty }\), the free distributional data on \(\mathfrak { X}_{\varphi }\) are characterized by joint free moments of \(\{s_{n}\}_{n=1}^{\infty }\); and then, a certain ...
openaire +1 more source