Browsing by Author "Challal, M. (supervisor)"

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    Design and implementation of microstrip Ultra-Wide Band Bandpass filter with and without dual notched band
    (Université M’Hamed BOUGARA de Boumerdes : Institut de génie electrique et electronique (IGEE), 2019) Aliouane, Mohamed Abdelbasset; Skoudarli, Abdelhamid; Challal, M. (supervisor)
    This work presents a novel compact ultra-wideband bandpass filter (UWB BPF) with and without dual notched band. It is based on symmetrical structure of a simple uniform line loaded by a stepped-impedance stub (SIS) connected at its center. Two notches are inserted at 5.8 and 8.0 GHz to eliminate WiMAX and satellite communication interferences by embedding two U-shaped slots in the ground plane. The proposed UWB BPF with dual-notch is simulated, fabricated and measured. Satisfactory results are obtained, achieving good performances in terms of ultra-wide impedance bandwidth of 7.7 GHz (2.9 - 10.6 GHz) with a fractional bandwidth of 118.8 %, return loss better than 13 dB, an upper stopband attenuation higher than 20 dB up to 16 GHz, and a sharp selectivity.
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    Design and simulation of a novel highly performant low pass filter
    (2019) Hendou, Sidahmed; Boualia, Mohamed; Challal, M. (supervisor)
    This work presents a study and design of a microstrip low pass filter (LPF), The proposed LPF has acceptable performances in terms of insertion loss,high return loss in the pass-band, wide stop- band at 20 dB suppression level ranging from 1.78 GHz to more than 20 GHz and size of 40x18mm2 compared to previous published works.