Browsing by Author "Hassan A.Y."

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Building a zero-order BPF with CRLH transmission lines
(PENTON MEDIA, 2018) Abdalla M.A.; Hassan A.Y.; Ibrahim A.A.; Electronic Engineering Department; MTC College; Cairo; Egypt; Electronics and Communications Department; MSA University; Giza; Egypt; Communications and Electronics Department; Faculty of Engineering; Minia University; Minia; Egypt; University Oierre and Marie Curie; Sorbonne University; Paris VI; France
Miniaturization of RF/microwave filters helps pave the way to developing smaller wireless devices for internet access. Using metamaterials and circuit structures such as composite-right-left-handed (CRLH) resonators has proven effective in shrinking RF/microwave filter circuits and was demonstrated in the design of a compact bandpass filter (BPF) well-suited for WiMAX wireless applications. � 2018, PENTON MEDIA. All rights reserved.
A compact high selective coupled gap CRLH TL based bandpass filter
(Institute of Electrical and Electronics Engineers Inc., 2015) Abdalla M.A.; Hassan A.Y.; Eldin A.M.G.; MTC College; Electronic Engineering Department; Cairo; Egypt; MSA University; Electronics and Communications Department; Giza; Egypt
This paper exhibits a new compact high selective gap band pass filter designed for the 5 GHz WiMAX service. The filter is based on fourth order coupling of coupled gap composite right left handed transmission line resonators. The resonators are designed to demonstrate a zeroth order mode at the passband center frequency for filter size reduction. The filter has a compact size 2020 mm2. The design concepts of the coupled filter response are discussed and verified using full electromagnetic full wave simulations and confirmed by experimental measurements with good agreements. The results confirm that the filter has 1.5 dB insertion loss and better than-25 transmission zero. 2015 IEEE.
A Double Optimized Transmission Zeros Based on ?-CRLH Dual-Band Bandpass Filter
(Electromagnetics Academy, 2019) Hassan A.Y.; Abdalla M.A.; Electronics and Communications Department; MSA University; Giza; Egypt; Electromagnetic Waves Group; Electronics Engineering Department; MTC College; Cairo; Egypt
In this paper, design and measurements of a highly selective ?-CRLH dual-band bandpass filter, with transmission zeros optimized to serve Wi-Max applications, is presented. The dual-bands are designed at 5.2 and 5.7 GHz with a sharp rejection level between them and transmission zeros before and after the passbands. The filter is designed using coupled gap zeroth order composite right/lefthanded (CRLH) resonators, which results in significant filter size reduction. Furthermore, two different coupled ?-CRLH filters are discussed through the work development of this paper. The filter design concepts are verified and confirmed using electromagnetic simulations and experimental measurements. Presented results reveal that the proposed filter exhibits a rejection level greater than ?20 dB, while maintaining 2 dB insertion loss and better than ?25 dB for the transmission zeros with compact size (12 � 16mm2) which is 70% smaller than similar conventional filters. � 2019 Progress In Electromagnetics Research Letters. All rights reserved.