Results 31 to 40 of about 85,692 (393)
Size-Reduction of a Dual-Band Circularly Polarized Dielectric Resonator Antennas
IEEE Access, 2021 In this paper, the size reduction of a dual-band circularly polarized (CP) Y-shaped dielectric resonator antenna (YDRA) is performed. Unlike the conventional CP DRAs, the circular polarization in the YDRA is achieved by the combination of linearly ...
Amir Altaf, Munkyo Seo
doaj +1 more source
Cost-efficient modeling of antenna structures using Gradient Enhanced Kriging [PDF]
, 2015 Reliable yet fast surrogate models are indispensable in the design of contemporary antenna structures. Data-driven models, e.g., based on Gaussian Processes or support-vector regression, offer sufficient flexibility and speed, however, their setup cost ...
Bekasiewicz, A +5 more
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Technologies for Near-Field Focused Microwave Antennas
International Journal of Antennas and Propagation, 2017 This paper provides a review spanning different technologies used to implement near-field focused antennas at the microwave frequency band up to a few tens of GHz: arrays of microstrip patches and printed dipoles, arrays of dielectric resonator antennas,
Paolo Nepa +3 more
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Wireless actuation of micromechanical resonators [PDF]
, 2016 The wireless transfer of power is of fundamental and technical interest, with applications ranging from the remote operation of consumer electronics and implanted biomedical devices and sensors to the actuation of devices for which hard-wired power ...
Erramilli, Shyamsunder +3 more
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Exact off-resonance near fields of small-size extended hemielliptic 2-D lenses illuminated by plane waves [PDF]
, 2009 The near fields of small-size extended hemielliptic lenses made of rexolite and isotropic quartz and illuminated by E- and H-polarized plane waves are studied.
Alexander I. Nosich +23 more
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Rectangular dielectric resonator antenna
Electronics Letters, 1983 An antenna which consists of a resonant rectangular parallelepiped dielectric on top of a ground plane is described. Calculated radiation patterns and measured impedances are presented, and the effects of feed probe length variations are discussed.
M.W. McAllister, S.A. Long, G.L. Conway
openaire +1 more source
Enhanced transmission of electromagnetic waves through split-ring resonator-shaped apertures [PDF]
, 2011 The design of aperture shape is a promising approach for enhanced transmission through a subwavelength aperture. We designed split-ring-resonator (SRR)-shaped apertures in order to increase the transmission through subwavelength apertures by making use ...
Aydin, Koray +3 more
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A stable subgridding algorithm and its application to eigenvalue problems [PDF]
, 1999 In this paper, a new and stable subgridding algorithm is proposed for three-dimensional problems which provides subgridding in both space and time. The concept of an equivalent-circuit representation and a novel leapfrog time integration scheme is used ...
Krishnaiah, KM, Railton, CJ
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IEEE Open Journal of Antennas and Propagation, 2023 The utilization of additive manufacturing (AM) to engineer the permittivity profile of dielectric resonator antennas (DRAs) is considered. For the first time, the capabilities of AM are exploited to create continuously swept permittivity profiles and ...
Simon P. Hehenberger +2 more
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Circularly polarized dielectric resonator antenna excited by a conformal wire [PDF]
, 2008 A conformal spiral wire has been used to feed a dielectric resonator antenna to obtain a circular polarization. The parameters of the spiral have been optimized numerically so that minimum axial ratio (AR) and return losses are achieved.
Khamas, S.K.
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