Entity

Time filter

Source Type

Rabat, Morocco

Aytouna F.,Abdelmalek Essaadi University | Zbitou J.,Hassan 1st University | Aghoutane M.,Abdelmalek Essaadi University | Touhami N.A.,Abdelmalek Essaadi University | And 2 more authors.
International Journal of Electrical and Computer Engineering | Year: 2016

In this work, we propose a novel design of a planar CPW lowpass "LPF" filter based on the use of periodic structures. The periodic cells are formed from a rectangular slot repeated periodically. The originality of this work is to develop a new LPF structure which is simple, low cost for fabrication and easy to associate with others microwave planar circuits. The proposed and validated LPF is a compact planar filter structure. The final circuit is simulated and optimized by using two electromagnetic solvers, advanced design system (ADS) and high frequency structural simulator (HFSS). After many series of optimization we have validated the final circuit into simulation by using optimization methods integrated into the both solvers, taking into account a high density of meshing in order to cover the whole circuit. The fabricated LPF circuit shows good agreement between simulation and measurement results in term of matching input impedance and insertion loss with a cut-off frequency of 1.25GHz. The entire area of the proposed LPF is 35x31 mm2. Copyright © 2016 Institute of Advanced Engineering and Science. All rights reserved. Source


Aytouna F.,Abdelmalek Essaadi University | Zbitou J.,Hassan 1st University | Aghoutane M.,Abdelmalek Essaadi University | Touhami N.A.,Abdelmalek Essaadi University | And 2 more authors.
Journal of Engineering Science and Technology Review | Year: 2015

In this paper, we introduce the design and the achievement of a Bandpass filter structure based on the use of rectangular slot cell. The originality of this work is to achieve a coplanar filter easy to integrate with microwave planar circuits and having a wide frequency bandwidth. The proposed bandpass filter is a low cost and compact planar filter structure. The final circuit is simulated by using two electromagnetic solvers, ADS and HFSS. The validation into simulation is based on using optimization methods integrated into the both solvers. Simulations have taken into account a high meshing density to cover the whole circuit. The fabricated bandpass filter has an area of 35X31mm2 and having a good insertion loss around -0.75dB in the bandwidth. The comparison between simulation and measurement results presents a good agreement. © 2015 Kavala Institute of Technology. Source


Zahraoui I.,of Settat Hassan 1st University | Zbitou J.,of Settat Hassan 1st University | Errkik A.,of Settat Hassan 1st University | Abdelmounim E.,Laboratory of Settat Hassan 1st University | And 2 more authors.
Proceedings - 2015 3rd International Workshop on RFID and Adaptive Wireless Sensor Networks, RAWSN 2015 - In conjunction with the International Conference on NETworked sYStems, NETYS 2015 | Year: 2015

In this paper, a novel study on the design and analysis of a compact printed antenna for multi-band applications are presented. The structure of the entire area is 45×45.5 mm2 and is printed on an FR-4 epoxy substrate. It is suitable for GSM/GPS/PCS applications by using an M-shaped antenna which is formed of different arms and an L-shaped shorted strip connected between the feeding line and the ground plane. Simulation results of the antenna input impedance bandwidths for, S11 ≤ (-10) dB, show that it covers the GSM, GPS and PCS bands. Also, a stable radiation pattern and an average antenna directivity of 2.18 dBi across the operating bands have been obtained by using ADS" Advanced Design System". Also, we have conducted another study by using CST-MW to compare the results obtained with ADS which give good agreement between the both EM solvers. © 2015 IEEE. Source


Sardi A.,Hassan 1st University of Settat | Zbitou J.,Hassan 1st University of Settat | Errkik A.,Hassan 1st University of Settat | El abdelaoui L.,Hassan 1st University of Settat | And 3 more authors.
International Journal of Microwave and Optical Technology | Year: 2016

In this paper, a novel design of microstrip branch line Coupler (BLC) is designed and simulated by using FR4 substrate at the operating frequency 3.55 GHz worldwide interoperability for microwave access (WiMAX), the proposed coupler is designed by using open stubs Technique. After a theoretical study on the use of open stubs, we present the simulation results of this coupler by using ADS from Agilent technologies and CST Microwave Studio to do comparison of simulation results. The simulated results comparison gave good results and an agreement between ADS and CST, which confirms the theory and validates the proposed coupler design. After this validation into simulation, we have achieved and tested this coupler, the good agreement between simulated and measured results permits to validate the designed coupler structure. © 2016 IAMOT. Source


Hamraoui A.E.,Hassan 1st University | Abdelmounim E.H.,Hassan 1st University | Zbitou J.,Microwave group | Bennis H.,Hassan 1st University | Latrach M.,Hassan 1st University
International Conference on Wireless Networks and Mobile Communications, WINCOM 2015 | Year: 2015

This paper presents a novel dual-band monopole antenna fed by a Coplanar Waveguide (CPW) line suitable for Radio Frequency Identification (RFID) applications especially designed for RFID readers and it operates at 2.45 GHz and 5.8 GHz. This antenna is designed with a reasonable gain, low profile and low cost achievement. The proposed antenna benefits from the advantages of the CPW line to simplify the structure of the antenna into a single metallic level, by consequent making it easier for integration with microwave integrated circuits. The simulation results carried out by ADS from Agilent technologies and CST Microwave Studio electromagnetic solvers, demonstrate that we have good performances in term of return loss, gain, radiation pattern and efficiency for the desired frequency bands. This antenna has a total area of 38×30.6mm2 and mounted on an FR4 substrate with dielectric permittivity constant 4.4, thickness of 1.6mm and loss tangent of 0.025. The gain obtained into simulation of this antenna is 1,9 dB at 2.45GHz and 4.7 dB at 5.8 GHz. © 2015 IEEE. Source

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