Browsing by Author "Messaoudene, Idris"

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    Design of a compact SWB high gain antenna uysing a fully PEC reflector
    (IEEE, 2021) Belazzoug, Massinissa; Khodja, Khalida; Ksouri, Elhachmi; Rebbah, Rabia; Messaoudene, Idris; Chaouche, Youcef Braham; Hammache, Boualam; Denidni, Tayeb A.
    In this paper, a high-gain and low-profile super wideband (SWB) antenna is presented. The proposed design consists of an asymmetric coplanar waveguide (CPW)-fed modified Y-shaped monopole antenna. A parasitic patch in the ending of bowtieshaped leads to improve the impedance match performance. Therefore, a fully PEC reflector is included in order to enhance the gain by combining the output and the reflected waves in the boresight direction. An impedance bandwidth of 124% is obtained (4.2-18 GHz for VSWR less than 2) with a very compact size of 0.15λ0×0.22λ0×0.012λ0. Directional radiation patterns for the E and H-planes are achieved. The realized gain of the proposed antenna is enhanced by 3-6.5 dBi over the operating band, and the total efficiency is more than 85%. All these features make the proposed antenna a good candidate for RADAR and WLAN communications
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    Dual-beam DRA based array for 5G applications
    (IEEE, 2021) Khodja, Khalida; Belazzoug, Massinisssa; Atia, Salim; Messaoudene, Idris; Denidni, Tayeb A.
    In this paper, a dual-beam array antenna based on triangular dielectric resonator (TDR) is presented for Ka-band applications. It consists of 2×1 radiating elements sharing a common ground plane and plated with a thin copper layer at the upper side. The antenna effectively covers two separate bands (28 GHz and 33GHz) with a double-beam radiation at both operating frequencies. This structure has achieved a return loss lower than -20dB with a corresponding gain of more than 8 dBi at 28GHz and 6dBi at 33GHz, and a high radiation efficiency (≥90%) across each band. The radiation pointing angles are centered at ±28° (28GHz) and ±31° (33GHz) with a wide angular width of more than 30°, respectively
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    Novel High Efficiency V-Band Pure TEM D-PRGW Antenna for 5G mmWave Applications
    (John Wiley & Sons, 2024) Khodja, Khalida; Atia, Salim; Messaoudene, Idris; Belazzoug, Massinissa; Merabet, I.; Melouki, Noureddine; Denidni, Tayeb A.
    This paper starts with the proposal of an enhanced version of a planar rectangular slot antenna fed by the quasi-TEM printed ridge gap waveguide (PRGW), attended with a numerical study of a miniaturization procedure showing the limitations of the conventional PRGW-based antennas. Then innovative solution is introducing a new miniaturized pure TEM wide-band slot antenna utilizing double PRGW (D-PRGW) technology; the proposed approach is self-packaged and shows high potential for enhancing antenna performance, particularly in terms of bandwidth, gain, and compactness. This technology is featured with low loss, high performance, and compact size; it consists of surrounding the ridge area with a double layer of electromagnetic band gap (EBG) lattice instead of one to eliminate the surface waves effectively and keep the signal completely confined inside the ridge area with strict minimum rows of EBG. Therefore, a broad impedance matching bandwidth (|S11| ≤ −10 dB) of 33.33% is obtained from 50 to 70 GHz, which covers the unlicensed NR parts (n262; amp; n263) of the V band. Furthermore, the antenna achieves a peak gain of approximately 16 at 65 GHz while the overall efficiency remains above 90% across the entire operating frequency band. The high performance along with the compact size of this novel design makes it a good candidate for 5G wireless communications applications centered around 60 GHz.