J. Zbitou

Publications

4 New Design of a Broadband Microwave Zero Bias Power Limiter

Authors: N. Ababssi, M. Latrach, H. Bennis, K. Echchakhaoui, E. Abdelmounim, J. Zbitou

Abstract:

In this paper a new design of a broadband microwave power limiter is presented and validated into simulation by using ADS software (Advanced Design System) from Agilent technologies. The final circuit is built on microstrip lines by using identical Zero Bias Schottky diodes. The power limiter is designed by Associating 3 stages Schottky diodes. The obtained simulation results permit to validate this circuit with a threshold input power level of 0 dBm until a maximum input power of 30 dBm.

Keywords: microstrip, Limiter, zero-biais

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3 Design of a Novel CPW Fed Fractal Antenna for UWB

Authors: A. Errkik, A. Tajmouati, M. Latrach, L. El Abdellaoui, A. Tribak, J. Zbitou, A. El Hamdouni

Abstract:

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.

Keywords: Fractal geometry, uwb, fractal antenna, CPW Feed, FCC

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2 A New Microstrip Diplexer Using Coupled Stepped Impedance Resonators

Authors: A. Errkik, A. Tajmouati, M. Latrach, A. Tribak, J. Zbitou, A. Chinig, L. Elabdellaoui

Abstract:

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.

Keywords: Isolation, band pass filter, coupled junction, diplexer, insertion loss, coupled stepped impedance resonators

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1 A Novel Design of a Low Cost Wideband Wilkinson Power Divider

Authors: A. Errkik, A. Tajmouati, L. El Abdellaoui, J. Zbitou, A. Sardi, M. Latrach.

Abstract:

This paper presents analysis and design of a wideband Wilkinson power divider for wireless applications. The design is accomplished by transforming the lengths and impedances of the quarter wavelength sections of the conventional Wilkinson power divider into U-shaped sections. The designed power divider is simulated by using ADS Agilent technologies and CST microwave studio software. It is shown that the proposed power divider has simple topology and good performances in terms of insertion loss, port matching and isolation at all operating frequencies (1.8 GHz, 2.45 GHz and 3.55 GHz).

Keywords: microstrip, ADS agilent technologies, CST microwave studio, wideband, wilkinson power divider

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Abstracts

5 Miniaturized and Compact Monopole Corner Antenna with a Periodic Slot Truncated and T-Inverted Stub-Tuning for Ultra Wideband Applications

Authors: A. Errkik, A. Tajmouati, M. Latrach, J. Zbitou, R. Dakir, Ahmed Mouhsen

Abstract:

The design and analysis of a new compact and miniaturized monopole antenna structure for ultra wideband (UWB) wireless applications are presented and suggested in this paper. The proposed antenna structure is based on corner radiator patch with T-shaped slot and fed by mictostrip feed line with a partial ground plane combined a periodic rectangular slot and inverted T-stub tuning to increase the bandwidth. The design parameters and the performance of the suggested antenna are investigated by using 'CST Microwave Studio' and Advanced Design System. The final prototype of the proposed antenna operates from 3GHZ to 25GHz, corresponding to wide input impedance bandwidth around (157.14%) with a size of 16*24mm2 and can be easily integrated with radio-frequency or microwave circuits with low cost manufacturing. Details of the UWB antenna design and both simulated and measured results are described and discussed.

Keywords: uwb, Improvement, bandwidth, T-shaped slots, stub tuning

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4 Design of a Novel CPW Fed Fractal Antenna for UWB

Authors: A. Errkik, A. Tajmouati, M. Latrach, L. El Abdellaoui, A. Tribak, J. Zbitou, A. El Hamdouni

Abstract:

This paper presents a novel fractal antenna structure proposed for UWB (Ultra – Wideband) applications. The frequency band 3.1-10.6 GHz 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 34 x 43 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 -10 dB between 2.9 GHz and 11 GHz.

Keywords: Fractal geometry, uwb, fractal antenna, CPW Feed, FCC

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3 New Design of a Broadband Microwave Zero Bias Power Limiter

Authors: N. Ababssi, M. Latrach, H. Bennis, K. Echchakhaoui, E. Abdelmounim, J. Zbitou

Abstract:

In this paper a new design of a broadband microwave power limiter is presented and validated into simulation by using ADS software (Advanced Design System) from Agilent technologies. The final circuit is built on microstrip lines by using identical Zero Bias Schottky diodes. The power limiter is designed by Associating 3 stages Schottky diodes. The obtained simulation results permit to validate this circuit with a threshold input power level of 0 dBm until a maximum input power of 30 dBm.

Keywords: microstrip, Limiter, zero-biais, ADS

Procedia PDF Downloads 323
2 A New Microstrip Diplexer Using Coupled Stepped Impedance Resonators

Authors: A. Errkik, A. Tajmouati, M. Latrach, A. Tribak, J. Zbitou, A. Chinig, L. Elabdellaoui

Abstract:

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.

Keywords: Isolation, band pass filter, coupled junction, coupled stepped impedance resonators, diplexer, insertion loss

Procedia PDF Downloads 271
1 A Novel Design of a Low Cost Wideband Wilkinson Power Divider

Authors: A. Errkik, A. Tajmouati, M. Latrach, L. El Abdellaoui, J. Zbitou, A. Sardi

Abstract:

This paper presents analysis and design of a wideband Wilkinson power divider for wireless applications. The design is accomplished by transforming the lengths and impedances of the quarter wavelength sections of the conventional Wilkinson power divider into U-shaped sections. The designed power divider is simulated by using ADS Agilent technologies and CST microwave studio software. It is shown that the proposed power divider has simple topology and good performances in terms of insertion loss, port matching and isolation at all operating frequencies (1.8 GHz, 2.45 GHz and 3.55 GHz).

Keywords: microstrip, ADS agilent technologies, CST microwave studio, wideband, wilkinson power divider

Procedia PDF Downloads 194