Browsing by Author "Nazif D.Z."

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Mutual coupling reduction in two elements UWB notch antenna system
(Institute of Electrical and Electronics Engineers Inc., 2017) Nazif D.Z.; Rabie R.S.; Abdalla M.A.; Electrical Systems Engineering Department; October University for Modern Sciences and Arts (MSA); Giza; Egypt; Electromagnetic Fields Group; Electronic Eng. Dep.; MTC College; Cairo; Egypt
In this paper, a two elements UWB (3.1 GHz-10.6 GHz) MIMO antenna is presented. A notch frequency at 5.8 GHz is interpolated within the UWB spectrum by using a dual of electromagnetic bandgap cells coupled to the antenna feeding line. By introducing a system of electromagnetic bandgap cells between the two antennas elements, the achieved results demonstrate nearly below-10 dB reflection coefficient over the spectrum and-1 dB at the notch frequency. Also, deposition between the two antennas is achieved to exceed 20 dB. The obtained results are simulated using full wave simulations. � 2017 IEEE.
Two Elements MIMO Antenna with Asymmetric Coplanar Strip Metamaterial Configuration and EBG Hybrid Isolation
(Institute of Electrical and Electronics Engineers Inc., 2018) Abdalla M.A.; Nazif D.Z.; Ali A.M.; Electronic Engineering Department; Military Technical College; Cairo; Egypt; October University for Modern Sciences and Arts; Electrical Systems Engineering Department; Giza; Egypt
This paper introduces a compact asymmetric coplanar strip (ACS)-fed composite right/left handed (CRLH) multiple input multiple output (MIMO) antenna for multiband operation. The ACS-fed MIMO antenna is designed using two triple band antenna elements, operating at 4.6 GHz, 4.9 GHz and 5.4 GHz with good matching (reflection coefficient is less than-20 dB). By using mushroom like electromagnetic bandgap structure, further mutual coupling isolation (better than 30 dB) is achieved. The overall MIMO antenna size is compact (46.5 � 26 mm 2 ). The MIMO antenna has less than 0.02 envelope correlation coefficient (ECC) and maximum than 9.98 dB diversity gain. The results are simulated using full wave simulations. � 2018 IEEE.
Two Elements Self-Complementary MIMO Antennas for Wideband Mutual Coupling Reduction
(Institute of Electrical and Electronics Engineers Inc., 2018) Salem K.M.; Nazif D.Z.; Abdalla M.A.; Electrical Systems Engineering Department; October University of Modern Sciences and Arts (MSA); Giza; Egypt; Electronic Eng. Dep.; Electromagnetic Fields Group; Military Technical College; Cairo; Egypt
This paper presents a compact, two elements MIMO antenna systems with a size of 57.2 � 57.2 mm 2 . The antennas have mutual coupling reduction over a wide band of 2.35 GHz to 2.65 GHz. It consists of two monopole triangle self-complementary antenna elements (TSCA). The simulation results show that the proposed MIMO antenna configuration has below enhanced mutual coupling which goes lower than -20 dB (an enhancement by more than 10 dB compared to conventional configuration). The obtained results are simulated using fullwave simulations. � 2018 IEEE.