Browsing Τμήμα Ηλεκτρολόγων Μηχανικών και Μηχανικών Υπολογιστών / Department of Electrical and Computer Engineering by Author "Abbosh, A. M."
Now showing items 1-16 of 16
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Article
Bandwidth and Directivity Enhancement of Loop Antenna by Nonperiodic Distribution of Mu-Negative Metamaterial Unit Cells
Rezaeieh, S. A.; Antoniades, Marcos A.; Abbosh, A. M. (2016)The theory, design, analysis, and verification of a wideband and unidirectional loop antenna loaded with mu-negative (MNG) metamaterial unit cells is presented. It is shown that by nonperiodic positioning of MNG unit cells ...
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Conference Object
Bandwidth and directivity enhancement of metamaterial-loaded loop antennas for microwave imaging applications
Antoniades, Marcos A.; Rezaeieh, S. A.; Abbosh, A. M. (Institute of Electrical and Electronics Engineers Inc., 2017)Compact, wideband and unidirectional loop antennas are presented, that are based on a conventional planar loop antenna that is loaded in a mu-negative (MNG) fashion with series capacitors, enabling a mu-zero (MZR) resonance ...
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Article
Broadband planar circularly polarised antenna for ultra-high frequency applications
Rezaeieh, S. A.; Abbosh, A. M.; Antoniades, Marcos A. (2014)A broadband circularly polarised (CP) antenna employing a deformed square loop radiator in combination with two spiraled monopoles is presented, for use in multiple ultra-high frequency applications. This combination of ...
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Conference Object
Broadband UHF antenna for heart failure detection system
Ahdi Rezaeieh, S.; Abbosh, A. M.; Antoniades, Marcos A. (2013)A three-dimensional cavity backed coplanar waveguide fed ultra-high frequency (UHF) antenna is presented. The antenna is designed to operate in microwave system for heart failure detection. A parasitic cavity is used to ...
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Article
Compact cpw-fed planar monopole antenna with wide circular polarization bandwidth
Ahdi Rezaeieh, S.; Abbosh, A. M.; Antoniades, Marcos A. (2013)The design and implementation of a coplanar waveguide-fed planar monopole antenna with circular polarization and broadband operation is presented. The antenna operates in the Industrial, Scientific, and Medical (ISM) and ...
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Conference Object
A compact crossover using NRI-TL metamaterial lines
Antoniades, Marcos A.; Henin, B.; Abbosh, A. M. (2012)A compact NRI-TL metamaterial branch-line crossover is presented that has an area of λ/36 × λ/12, and is a factor of 81 times smaller than its analogous transmission-line counterpart. Circuit simulations reveal that it ...
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Conference Object
A compact multiband NRI-TL metamaterial-loaded planar antenna for heart failure monitoring
Antoniades, Marcos A.; Abbosh, A. M.; Razali, A. R. (2013)A compact, planar antenna is proposed, which uses negative-refractive-index transmission-line (NRI-TL) metamaterial loading in order to achieve multiband operation with orthogonal pattern diversity in different bands. The ...
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Article
Compact Wideband Loop Antenna Partially Loaded With Mu-Negative Metamaterial Unit Cells for Directivity Enhancement
Ahdi Rezaeieh, S.; Antoniades, Marcos A.; Abbosh, A. M. (2016)A wideband and unidirectional loop antenna partially loaded with mu-negative (MNG) metamaterial unit cells is presented. To reduce the electrical size of the antenna, its first resonance is formed by capacitively loading ...
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Article
Direct quadrature phase shift keying modulation using compact wideband six-port networks
Ibrahim, S. Z.; Abbosh, A. M.; Antoniades, Marcos A. (2012)In this study, the operation of a compact six-port network operating as a quadrature phase shift keying (QPSK) modulator with a wide operational bandwidth is presented. The modulation has been accomplished using two types ...
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Conference Object
Dual-band dual-polarized antenna for medical applications
Rezaeieh, S. A.; Abbosh, A. M.; Antoniades, Marcos A.; Mustafa, S. (2013)The design of a coplanar waveguide fed antenna with dual polarization and dual-band operation is presented. The antenna operates in the Industrial, Scientific and Medical (ISM) bands. The design presented has linear ...
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Conference Object
Equivalent circuit model for finding the optimum frequency range for the detection of heart failure using microwave systems
Ahdi Rezaeieh, S.; Tan, Y. -Q; Abbosh, A. M.; Antoniades, Marcos A. (2013)A circuit model is used to estimate the useful frequency bands that can be used in a microwave system designed for heart failure detection. That detection is realized by monitoring the accumulation of fluids in lungs ...
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Article
Gain Enhancement of Wideband Metamaterial-Loaded Loop Antenna with Tightly Coupled Arc-Shaped Directors
Ahdi Rezaeieh, S.; Antoniades, Marcos A.; Abbosh, A. M. (2017)A wideband and unidirectional loop antenna with enhanced and stable gain is presented. To reduce the size of the antenna, the loop is loaded with three mu-negative (MNG) metamaterial unit-cells. The proposed unit-cells ...
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Conference Object
Harmonic suppression for planar ultrawideband bandpass filters employing broadside-coupled microstrip patches
Henin, B.; Abbosh, A. M.; Antoniades, Marcos A. (2012)The design of a planar bandpass filter with ultra-wideband behavior and suppressed second harmonic is presented. The proposed filter utilizes broadside coupling between elliptical microstrip patches at the top and bottom ...
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Article
Miniaturization of Planar Yagi Antennas Using Mu-Negative Metamaterial-Loaded Reflector
Ahdi Rezaeieh, S.; Antoniades, Marcos A.; Abbosh, A. M. (2017)A technique to reduce the size and enhance the operating bandwidth (BW) of planar Yagi antennas, while maintaining their unidirectional radiation characteristics, is proposed in this paper. In this technique, the reflector ...
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Article
Miniaturized Planar Yagi Antenna Utilizing Capacitively Coupled Folded Reflector
Rezaeieh, S. A.; Antoniades, Marcos A.; Abbosh, A. M. (2017)The analysis and design of a unidirectional and wideband printed Yagi antenna with miniaturized size using a capacitively coupled reflector is presented. Reflectors have been widely used for canceling back radiation of ...
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Article
Planar antennas for compact multiband transceivers using a microstrip feedline and multiple open-ended ground slots
Antoniades, Marcos A.; Dadgarpour, A.; Razali, A. R.; Abbosh, A. M.; Denidni, T. A. (2015)Two planar antennas for compact multiband transceivers are presented, that employ an open-ended microstrip feedline that couples to multiple open-ended ground slots. The effect of separately introducing each of the slots ...