Browsing by Author "Louazene, Hassiba"

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    Band-notched ultra-wideband bandpass filter design using multiple-mode resonator and stepped impedance stub loaded
    (IEEE, 2017) Louazene, Hassiba; Challal, Mouloud; Boulakroune, M'Hamed
    A novel ultra-wideband (UWB) bandpass filter (BPF) with notched band is proposed in this paper. The filter is consisting of two symmetrical multiple-mode resonators (MMRs) connected to quarter-wavelength interdigital lines. This filter provides, in the passband, an insertion loss of 0.19 dB and a return loss greater than 22.6 dB. Furthermore, the filter occupies an area of 11.54 × 3.11 mm 2 . In this filter design, besides obtaining a uniform in-band transmission response, a notch band centered roughly 5.2 GHz is created by modifying one of two arms in the coupled-line sections. The simulation results are in satisfactory agreement with the measurement ones reported elsewhere. The proposed UWB-BPF presents good performance in terms of insertion loss, return loss, fractional bandwidth and compact size than those reported in the literature
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    Compact UWB BPF with notch-band using SIR and DGS
    (Inderscience, 2018) Louazene, Hassiba; Challal, Mouloud; Boulakroune, M'hamed
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    Microstrip bandpass filters analysis and design for UWB applications
    (2020) Louazene, Hassiba
    This thesis focuses on the analysis and design of a novel structures of microstrip bandpass filter for UWB applications. This work is divided into two parts: In the first part, three novel topologies of microstrip (UWB) bandpass filters (BPFs) are esigned including two with the use of the defect in the ground plane technique (known by DGS: Defected Ground Structure). For the second part, three different (UWB) passband filter structures with notches are also designed and presented. The easured and simulation results have shown good agreement which validate the different proposed structures and the adopted design procedures
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    An UWB bandpass filter with large upper stop band suppression
    (IEEE, 2022) Louazene, Hassiba; Challal, Mouloud; Boulakroune, M’hamed
    An new bandpass filter (BPF) with wide stopband performance for ultra-wideband (UWB) applications is presented in this paper. An equivalent RLC circuit model is also shown, and its relevant parameters are derived using parametric relationships. The proposed filter operates from 2.4 GHz to 10.4 GHz. The key advantage of this filter is the large upper stopband without adding any component. Based on good agreement between the results of simulations (using an ECM and a full-wave electromagnetic simulator) and measurements, the proposed filter is appropriate for UWB systems