Results 21 to 30 of about 27,684 (298)
Asymptotic extraction approach for antennas in a multilayered spherical media [PDF]
, 2010 An efficient algorithm is introduced to enhance the convergence of dyadic Green's functions (DGF) in a layered spherical media where asymptotic expressions have been developed. The formulated expressions involve an infinite series of spherical eigenmodes
Khamas, S.K.
core +1 more source
Concentric circles and spiral configurations for large correlator arrays in radio astronomy [PDF]
, 2018 Aperture synthesis arrays are commonly used in radio astronomy to take images of radio point sources, with the planned Square Kilometre Array (SKA) being the most common example.
Abidin, Zamri Zainal +6 more
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Computational Analysis of a Spiral Thermoelectric Nanoantenna for Solar Energy Harvesting Applications [PDF]
, 2014 Thermo-electrical nanoantennas have been proposed as an alternative option for conversion solar energy harvesting applications. In this work, the response of a spiral broadband antenna has been obtained from numerical and theoretical simulations ...
Alda, Javier +7 more
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High directivity fractal boundary microstrip patch antenna [PDF]
, 2000 A novel patch antenna with a fractal boundary condition is proposed. Experimental and numerical results corroborate the fact that the fractal characteristic of the perimeter produces localised modes.
Blanch Boris, Sebastián +3 more
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IET Microwaves, Antennas & Propagation, 2021 In this article, three novel slotted substrate integrated waveguide (SIW) antenna elements are demonstrated with different radiator configurations, namely, two arms Archimedean antenna, single‐arm spiral antenna (monofilar), and four concentric circular ...
Alla M. Eid +2 more
doaj +1 more source
Optimization of photomixers and antennas for continuous-wave terahertz emission [PDF]
, 2005 We have studied terahertz emission from interdigitated finger photomixers coupled to planar antenna structures. Using both pulsed and continuous-wave excitation, polarization measurements reveal that the antenna design dominates the properties of the
Baker, C. +7 more
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Designing an Efficient Ultra Small Form Factor On-Chip Antenna for UHF RFID Application [PDF]
Radioengineering, 2019 The efficient design of electrically small antennas (ESA) has recently evolved to an outstandingly active area of research. This paper aims to present an improved performance electrically small on-chip antenna design, for the 920 MHz UHF-RFID frequency ...
B. Matolcsy, A. Zolomy
doaj
A Broadband Planar Spiral Antenna Design for Electromagnetic Signal Monitoring
IEEE Access, 2020 In order to meet the wide-band full-space radio monitoring task, the design of a circular-polarized planar dual-arm composite spiral antenna is presented in this paper.
Daifu Chen, Hongxin Zhang, Jun Xu
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Moment method analysis of an archimedean spiral printed on a layered dielectric sphere [PDF]
, 2008 A method of moments model is presented to analyze Archimedean spirals that are printed on a layered dielectric sphere. The model is derived assuming an arbitrary location of the spiral.
Khamas, S.K.
core +1 more source
IEEE Access, 2021 This paper presents a new design for a wideband circularly polarized (CP) spiral antenna array fed by a differential aperture coupling. The differential excitation is realized by two vias located at the lateral sides of a transverse slot etched on the ...
Elham Baghernia +2 more
doaj +1 more source