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Kim, Oleksiy S.
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Topics
Publications (23/23 displayed)
- 2018Benchmarking state-of-the-art numerical simulation techniques for analyzing large photonic crystal membrane line defect cavities
- 2018Benchmarking state-of-the-art numerical simulation techniques for analyzing large photonic crystal membrane line defect cavities
- 2018Benchmarking state-of-the-art optical simulation methods for analyzing large nanophotonic structures
- 2018Benchmarking state-of-the-art optical simulation methods for analyzing large nanophotonic structures
- 2018Benchmarking five numerical simulation techniques for computing resonance wavelengths and quality factors in photonic crystal membrane line defect cavitiescitations
- 2018Which Computational Methods Are Good for Analyzing Large Photonic Crystal Membrane Cavities?
- 2018Which Computational Methods Are Good for Analyzing Large Photonic Crystal Membrane Cavities?
- 2018Benchmarking five numerical simulation techniques for computing resonance wavelengths and quality factors in photonic crystal membrane line defect cavitiescitations
- 2017Comparison of Five Computational Methods for Computing Q Factors in Photonic Crystal Membrane Cavities
- 2017Comparison of Five Computational Methods for Computing Q Factors in Photonic Crystal Membrane Cavities
- 2017Benchmarking five computational methods for analyzing large photonic crystal membrane cavitiescitations
- 2017Benchmarking five computational methods for analyzing large photonic crystal membrane cavitiescitations
- 2016Comparison of four computational methods for computing Q factors and resonance wavelengths in photonic crystal membrane cavities
- 2016Comparison of four computational methods for computing Q factors and resonance wavelengths in photonic crystal membrane cavities
- 2015A Ray-tracing Method to Analyzing Modulated Planar Fabry-Perot Antennas
- 20153D printed 20/30-GHz dual-band offset stepped-reflector antenna
- 2014Properties of Sub-Wavelength Spherical Antennas With Arbitrarily Lossy Magnetodielectric Cores Approaching the Chu Lower Boundcitations
- 2013Design, Manufacturing, and Testing of a 20/30-GHz Dual-Band Circularly Polarized Reflectarray Antennacitations
- 2012Electrical properties of spherical dipole antennas with lossy material corescitations
- 2011Radiation quality factor of spherical antennas with material cores
- 2010Electrically Small Magnetic Dipole Antennas With Quality Factors Approaching the Chu Lower Boundcitations
- 2009Cylindrical metamaterial-based subwavelength antennacitations
- 2004Method of moments solution of volume integral equations using higher-order hierarchical Legendre basis functionscitations
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document
Radiation quality factor of spherical antennas with material cores
Abstract
This paper gives a description of the radiation quality factor and resonances of spherical antennas with material cores. Conditions for cavity and radiating resonances are given, and a theoretical description of the radiation quality factor, as well as simple expressions describing the relative increase in quality factor due to the effect of the internally stored energy are given in special cases. For the air-core antenna of vanishing size, it is shown that the dipole modes are the modes providing the lowest quality factor of all modes. Finally an investigation of the effect of the core permeability and permittivity for an antenna of fixed electrical size is performed.