Results 211 to 220 of about 8,876 (268)
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Visualizing radiation patterns of antennas
IEEE Computer Graphics and Applications, 1990An efficient computer graphics tool for investigating the radiation patterns of antennas as functions of their design parameters is presented. Radiation patterns (or the magnitudes of field distributions) of antennas are treated as three-dimensional surfaces, since the magnitudes of the far-field distributions are functions of polar and azimuthal ...
Swapan Chakrabarti +3 more
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Antenna Radiation Pattern Compressive Sensing
MILCOM 2018 - 2018 IEEE Military Communications Conference (MILCOM), 2018Modern wireless communications is placing ever greater demands on the system's antenna. But high-resolution, wide-band antenna pattern measurement remains a slow, expensive process that can hinder research, development, and production. This paper explores the use of compressive sensing to accelerate the measurement process.
Michael L. Don, Gonzalo R. Arce
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Antenna Radiation Pattern Measurement at a Reduced Distance
2004 Conference on Precision Electromagnetic Measurements, 2004A method has been developed to obtain the far-field radiation pattern of an antenna at a reduced distance where the far-field distance condition is not satisfied. It uses an asymptotic antenna transmission formula and angular mode deconvolution technique to determine the far-field radiation ...
Jeong-Hwan Kim, Hong-Ki Choi
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The Effect of Antenna Network Configurations on the Radiation Patterns
2019 International Conference on Internet of Things, Embedded Systems and Communications (IINTEC), 2019In this paper, we present different configurations of antenna networks for Worldwide Interoperability for Microwave Access (WiMAX) communication system. This phase consists in networking the elementary radiating elements in a particular geometric arrangement to guarantee the requirements imposed in terms of gain, maximum size and radiation patterns ...
Said Ghnimi +3 more
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Radiation pattern synthesis for a prolate spheroidal antenna
2017 IEEE International Symposium on Antennas and Propagation & USNC/URSI National Radio Science Meeting, 2017An antenna is designed consisting of axial surface currents on a prolate spheroidal metallic surface. The dual orthogonality of the prolate spheroidal wave functions is utilized to synthesize a far field radiation pattern which best approximates a desired far field pattern for a given arbitrary superdirective ratio.
Marco D Poort, Piergiorgio LE Uslenghi
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A reconfigurable radiation pattern annular slot antenna
2016 Loughborough Antennas & Propagation Conference (LAPC), 2016This paper contemplate a theoretical analysis of a pattern reconfigurable antenna using annular slot antenna operating in low frequency. A shorting pin is inserted to allow the annular slot antenna to have an omni-directional radiation pattern like a monopole antenna.
Aziz, NA, Radhi, A, Nilavalan, R
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Plasma Antenna Radiation Patterns
AIP Conference Proceedings, 2003Elevation angle pattern measurements of our Plasma Antenna are presented and compared with results from computer models. Good agreement is found for the measurements with patterns predicted by our linearly decreasing conductivity model for the plasma antenna, derived from computer models using readily available packages.
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The improvement technology of radiation pattern for GPS antenna
2014 International Symposium on Antennas and Propagation Conference Proceedings, 2014This paper shows a radiation pattern improvement method for GPS antenna. By adding 2 wavetraps into a mobile device at a specific location, the upper hemisphere efficiency (UHE) with wavetraps is improved from 26% to 46%. This technology does not increase any antenna area and antenna clearance. It represents the technology is useful for mobile antenna,
Shih-Huang, Yeh +2 more
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Simulation of antenna radiation pattern
Microwave and Optical Technology Letters, 1995AbstractAdequately modeling the radiation pattern of a highâperformance antenna system usually requires the expensive development of complicated electromagnetic software or the storage of an extremely large number of measured data. An alternative and efficient simulation technique is described in this article using a spherical wave expansion model ...
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