Results 271 to 280 of about 251,238 (344)
Some of the next articles are maybe not open access.
High-Directivity Optimization Technique for Irregular Arrays Combined With Maximum Entropy Model
IEEE Transactions on Antennas and Propagation, 2021A high-directivity optimization technique for irregular arrays combined with maximum entropy model is presented. First, the major cause of the reduction in directivities of irregular arrays has been analyzed, namely, the so-called relative wave path ...
Yankai Ma +4 more
semanticscholar +1 more source
Investigating phoneme-dependencies of spherical voice directivity patterns.
Journal of the Acoustical Society of America, 2021Dynamic directivity is a specific characteristic of the human voice, showing time-dependent variations while speaking or singing. To study and model the human voice's articulation-dependencies and provide datasets that can be applied in virtual acoustic ...
C. Pörschmann, Johannes M. Arend
semanticscholar +1 more source
High-Directivity Microstrip Patch Antennas Based on TModd-0 Modes
IEEE Antennas and Wireless Propagation Letters, 2020High-directivity microstrip antennas are attractive for the line-of-sight communications due to their thin profile. In order to achieve a high-directive radiation pattern, the geometry of a patch operating at a TModd-0 mode is modified to minimize the ...
J. Anguera, A. Andújar, J. Jayasinghe
semanticscholar +1 more source
IEEE Transactions on Antennas and Propagation, 2019
A dual-mode compressed dipole resonating at high-order modes is proposed to enhance bandwidth and directivity by loading the two dipole arms with two stubs.
Yu Luo, Zhi Ning Chen, Kaixue Ma
semanticscholar +1 more source
A dual-mode compressed dipole resonating at high-order modes is proposed to enhance bandwidth and directivity by loading the two dipole arms with two stubs.
Yu Luo, Zhi Ning Chen, Kaixue Ma
semanticscholar +1 more source
IEEE Wireless Communications Letters, 2019
The demand for satellite communication (SATCOM) has been increasing to provide communication environments for terminals in areas with no terrestrial network coverage and to provide communication means with Internet of Things (IoT) equipment. Accordingly,
Masaki Takahashi +4 more
semanticscholar +1 more source
The demand for satellite communication (SATCOM) has been increasing to provide communication environments for terminals in areas with no terrestrial network coverage and to provide communication means with Internet of Things (IoT) equipment. Accordingly,
Masaki Takahashi +4 more
semanticscholar +1 more source
Ground Motion Selection in the Near-Fault Region considering Directivity-Induced Pulse Effects
Earthquake spectra, 2019This paper focuses on the selection of ground motions for seismic response analysis in the near-fault region, where directivity effects are significant.
K. Tarbali, B. Bradley, J. Baker
semanticscholar +1 more source
Nursing Standard, 1987
In today's world words such as 'mobile' and 'mobility' have strong impact in their figurative meanings; in the world of the professional health carer their literal meaning has been of prime importance throughout the ages. The patient who is physically mobile or has some means of mobility maintains a measure of freedom or independence which in turn ...
openaire +2 more sources
In today's world words such as 'mobile' and 'mobility' have strong impact in their figurative meanings; in the world of the professional health carer their literal meaning has been of prime importance throughout the ages. The patient who is physically mobile or has some means of mobility maintains a measure of freedom or independence which in turn ...
openaire +2 more sources
Compact, High Directivity, Omnidirectional Circularly Polarized Antenna Array
IEEE Transactions on Antennas and Propagation, 2019A compact omnidirectional circularly polarized (OCP) antenna system is reported, which achieves high directivity and operates with the 2.4 GHz WLAN band.
Wei Lin, R. Ziolkowski
semanticscholar +1 more source
Journal of earthquake engineering, 2018
The behavior of base-isolated buildings under near-fault (NF) ground motions with fling-step and forward-directivity characteristics is investigated using three-dimensional nonlinear finite element models.
S. Bhagat, A. Wijeyewickrema, N. Subedi
semanticscholar +1 more source
The behavior of base-isolated buildings under near-fault (NF) ground motions with fling-step and forward-directivity characteristics is investigated using three-dimensional nonlinear finite element models.
S. Bhagat, A. Wijeyewickrema, N. Subedi
semanticscholar +1 more source