A. Tribak - Academia.edu (original) (raw)

Papers by A. Tribak

The demand of high data rate in wireless communications requires higher system bandwidth. In this... more The demand of high data rate in wireless communications requires higher system bandwidth. In this work, the design of wideband BPF with suppression of higher harmonics has brought about by considering the UWB BPF as a hairpin filter structure with DGS BSF. As a result, the structure is simple and compact. The expected result of a simple BPF together with DGS is to have a compact UWB bandpass filter with significantly higher harmonics suppression. The filter performances are exhibits |S21 | more than-0.2 dB, |S11 | less than-10dB, center frequency of proposed filter is around 4GHz with operating bandwidth 38 % and can suppress unwanted passband to below-25 dB

Advances in Wireless Technologies and Telecommunication

This chapter presents two new microstrip multiband antennas based on fractal geometry. The purpos... more This chapter presents two new microstrip multiband antennas based on fractal geometry. The purpose is to study the behaviour of structures when applying a fractal aspect. The first antenna is designed and optimized by using Sierpinski triangle technique, it's validated in tne ISM “Industrial Scientific and Medical” band at 2.45 and 5.8 GHz bands which was designed to be suitable for wireless power transmission use, while the second proposed antenna structure is based on the hexagonal geometry, it's validated and tested for DCS (Digital Cellular System) at 1.8 GHz, for 2.45 GHz and for 5.8 GHz, as an example of application wireless mobile system is an application field.

2014 International Conference on Multimedia Computing and Systems (ICMCS), 2014

This paper presents the design, simulation, and implementation of band pass filters in rectangula... more This paper presents the design, simulation, and implementation of band pass filters in rectangular waveguides with radius, having 0.1 dB pass band ripple and 6.3% ripple at the center frequency of 14.2 GHz. A Mician microwave wizard software based on the Mode Matching Method (MMM) was used to simulate the structure of the filter. Simulation results are in good agreement with the measured one which improve the validity of the waveguide band pass filter design method.

E3S Web of Conferences

This paper presents the design, simulation and manufacture of two Asymmetrical filters based resp... more This paper presents the design, simulation and manufacture of two Asymmetrical filters based respectively on standard rectangular waveguides WR90 and WR75 in which resonant irises are inserted, operating respectively in the X-Band [9-11GHz] and Ku-Band [11-13GHz].The filter parameters were simulated by the MMM modal matching method (MMM) implemented in the Microwave-Wizard software, and that obtained by the CST-MWS software. The simulated results are in good agreement with those obtained by the experimental measurements.

This paper presents a novel fractal antenna structure proposed for UWB (Ultra – Wideban... more This paper presents a novel fractal antenna structure proposed for UWB (Ultra – Wideband) applications. The frequency band 3.1-10.6GHz released by FCC (Federal Communication Commission) as the commercial operation of UWB has been chosen as frequency range for this antenna based on coplanar waveguide (CPW) feed and circular shapes fulfilled according to fractal geometry. The proposed antenna is validated and designed by using an FR4 substrate with overall area of 34x43 mm2. The simulated results performed by CST-Microwave Studio and compared by ADS (Advanced Design System) show good matching input impedance with return loss less than -10dB between 2.9 GHz and 11 GHz.

This paper presents a new structure of microstrip band pass filter (BPF) based on coupl... more This paper presents a new structure of microstrip band pass filter (BPF) based on coupled stepped impedance resonators. Each filter consists of two coupled stepped impedance resonators connected to microstrip feed lines. The coupled junction is utilized to connect the two BPFs to the antenna. This two band pass filters are designed and simulated to operate for the digital communication system (DCS) and Industrial Scientific and Medical (ISM) bands at 1.8 GHz and 2.45 GHz respectively. The proposed circuit presents good performances with an insertion loss lower than 2.3 dB and isolation between the two channels greater than 21 dB. The prototype of the optimized diplexer have been investigated numerically by using ADS Agilent and verified with CST microwave software.

Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2017

Progress In Electromagnetics Research C, 2016

International Journal of Microwave and Wireless Technologies, 2014

The narrow bandwidth of microstrip antennas is one of the most important features that restrict i... more The narrow bandwidth of microstrip antennas is one of the most important features that restrict its wide usage. This paper presents a new coplanar waveguide-fed compact rectangular microstrip antenna with the improvement of the bandwidth using the slot geometry and cutting rectangular periodic edges for the patch radiator. To develop this structure, we have conducted many optimization and investigation using Momentum Software integrated into ADS “Advanced Design System” and comparison of the results with CST Microwave Studio. The comparison between the simulation and measurement results permits to validate the final achieved antenna with an improvement of the bandwidth. This antenna has wide matching input impedance ranging from 1.7 to 3.5 GHz with a return loss less than −10 dB, corresponding to bandwidth 69.7% at 2.6 GHz as a frequency center. The antenna achieved is a low cost, planar, and easy to be fabricated, thus promising for multiple applications in wireless communication s...

Electrical and Electronic Engineering, 2013

IEEE Microwave and Wireless Components Letters, 2010

Page 1. IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, VOL. 20, NO. 10, OCTOBER 2010 539 Octave ... more Page 1. IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS, VOL. 20, NO. 10, OCTOBER 2010 539 Octave Bandwidth Compact Turnstile-Based Orthomode Transducer Abdelwahed Tribak, Juan L. Cano, Angel Mediavilla, and Mohamed Boussouis ...

This work presents a new planar multiband antenna based on fractal geometry. This struc... more This work presents a new planar multiband antenna based on fractal geometry. This structure is optimized and validated into simulation by using CST-MW Studio. To feed this antenna we have used a CPW line which makes it easy to be incorporated with integrated circuits. The simulation results presents a good matching input impedance and radiation pattern in the GSM band at 900 MHz and ISM band at 2.4 GHz. The final structure is a dual band fractal antenna with 70 x 70 mm² as a total area by using an FR4 substrate.

This paper presents the design and the achievement of a coplanar compact broadband microstrip ant... more This paper presents the design and the achievement of a coplanar compact broadband microstrip antenna. The proposed antenna has a wide matching input impedance with a return loss less than -10dB. This antenna is developed to widen the narrow bandwidth of a microstrip rectangular patch. The antenna structure is designed, optimized and miniaturized by using Momentum software integrated into ADS ”Advanced Design System” and compared with CST Microwave Studio. The final b roadband antenna is achieved by using FR4 substrate.

This paper presents a new structure of microstrip diplexer based on triangular loop resonators. T... more This paper presents a new structure of microstrip diplexer based on triangular loop resonators. The diplexer is composed of two bands pass filters for the WiMAX applications at 3.2 GHz (IEEE 802.16 WiMAX at 3.17 GHz to 4.2 GHz bands) and the WLAN applications at 2.4 GHz (IEEE 802.11 WLAN at 2.4 GHZ to 2.5 GHz). Two triangular resonators connected with a transmission line are used to form each filter with a matching network used to connect the two BPFs with the antenna. The diplexer has less than 2 dB insertion loss and more than 23 dB of isolation. This prototype diplexer is designed for a multiband system operating in the 2.4/3.2GHz respectively. The simulation results are investigated by using ADS from Agilent Technologies.

TELKOMNIKA (Telecommunication Computing Electronics and Control)

2014 International Conference on Multimedia Computing and Systems (ICMCS), 2014

This paper comes with a new study on the conception of a CPW-Fed multi bands planar antenna. The ... more This paper comes with a new study on the conception of a CPW-Fed multi bands planar antenna. The design takes into account that this structure can be integrated with circuits behind, that why the Fed is a CPW one. The antenna validated is suitable for GSM, DCS and ISM band. The entire area of the antenna is 36×72.5 mm2 and it is printed on an FR4 substrate. The printed U-shaped antenna is formed from two horizontal arms of different lengths and an L-shaped shorted strip which is connected between the vertical arm and the ground plane. The antenna is designed, optimized, and miniaturized by using ADS “Advanced Design System” and the results are compared with CST Microwave Studio.

International Journal of Electrical and Computer Engineering (IJECE)

This paper presents the development of a new miniaturized and compact GCPW-fed slotted rectangula... more This paper presents the development of a new miniaturized and compact GCPW-fed slotted rectangular antenna structure reader for wideband UHF RFID applications. The optimized proposed antenna is suitable to operate a large frequency-band range from 0.8GHz to 1.3GHz with a bandwidth of 500MHz with a return loss less than -10dB. The antenna is based on a 1.6mm thickness FR4 epoxy substrate with a reduce dimensions compared to the simple rectangular antenna and size of proposed antenna is 47*40mm2. The new design consists of a compact rectangular patch with symmetric U-shaped slots and I-shaped include a partial ground plan and fed by 50 Grounded coplanar line. The antenna parameters have been investigated and optimized by using CST Microwave Studio. To validate the CST Microwave Studio results before the antenna achievement, we have conducted another study by using ADS. The final circuit achieved, measured and validated. Experimental results show that the proposed anten...

International Journal of Computer and Communication Engineering, 2013

Advances in Wireless Technologies and Telecommunication

2014 International Conference on Multimedia Computing and Systems (ICMCS), 2014

E3S Web of Conferences

Journal of Microwaves, Optoelectronics and Electromagnetic Applications, 2017

Progress In Electromagnetics Research C, 2016

International Journal of Microwave and Wireless Technologies, 2014

Electrical and Electronic Engineering, 2013

IEEE Microwave and Wireless Components Letters, 2010

TELKOMNIKA (Telecommunication Computing Electronics and Control)

2014 International Conference on Multimedia Computing and Systems (ICMCS), 2014

International Journal of Electrical and Computer Engineering (IJECE)

International Journal of Computer and Communication Engineering, 2013