Ibrahime Hassan Nejdi

ORCID: 0000-0003-1236-5763
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Research Areas
  • Antenna Design and Analysis
  • Microwave Engineering and Waveguides
  • Bluetooth and Wireless Communication Technologies
  • Antenna Design and Optimization
  • Wireless Body Area Networks
  • Advanced Antenna and Metasurface Technologies
  • Energy Harvesting in Wireless Networks
  • Ultra-Wideband Communications Technology
  • Advanced MIMO Systems Optimization

Université Sultan Moulay Slimane
2018-2023

Embedded Systems (United States)
2022

The present study proposes a new, highly efficient fractal antenna with ultra-wideband (UWB) characteristics. proposed patch offers wide simulated operating band that reaches 8.3 GHz, gain varies between 2.47 and 7.73 dB throughout the range, high efficiency comes to 98% due modifications made geometry. carried out on are composed of several stages, circular ring extracted from in which four rings integrated and, each ring, other reduction factor 3/8. To further improve adaptation antenna,...

10.3390/s23084172 article EN cc-by Sensors 2023-04-21

In this paper, a compact dual-wideband fractal antenna is created for Bluetooth, WiMAX, WLAN, C, and X band applications. The proposed consists of circularly shaped resonator that contains square slots ground plane where gap line incorporated to increase the gain bandwidth with small volume 40 × 34 1.6 mm3. patch was supported by FR4 dielectric, which had permittivity 4.4 tan δ = 0.02. A 50 Ω microstrip fed antenna. designed HFSS program, after that, simulated results were validated using...

10.3390/s23094254 article EN cc-by Sensors 2023-04-25

This article presents a new design of compact fractal antenna that operates across various wireless communication applications with wideband functionality. With peak gain 6.8 dB and radiation efficiency ranging from 91% to 94%, the designed in frequency range 3.2-7.5 GHz. The consists rectangular radiator integrated slots on one side an FR4 substrate, while partial ground plane is etched other side. fabricated prototype was tested measured. results present good agreement simulated results....

10.1016/j.heliyon.2024.e26087 article EN cc-by-nc-nd Heliyon 2024-02-16

In this paper, a highly efficient tree-shaped fractal antenna with multi-broadband resonance characteristics is proposed. The proposed exhibits broad operating bandwidth, high gain, and efficiency due to the suggested modifications in geometry. circular patch modified by introducing slots form of structure, partial ground plane incorporating narrow rectangular slot. designed on an FR4 substrate [Formula: see text][Formula: text]mm 3 . prototype has been fabricated tested justify simulation...

10.1142/s0218126622502048 article EN Journal of Circuits Systems and Computers 2022-04-20

This paper presents the design of a multiband microstrip patch antenna operating at seven frequencies i.e. 2.4 (Lower Worldwide Interoperability for Microwave Access (WiMAX), 5.3 (Wireless local area network (WLAN)) and 9.1-10.2 GHz (X-band) frequency bands. The radiating element is backed by 1.6 mm thicker FR4-epoxy substrate having dielectric constant 4.4 loss tangent δ = 0.02. fed through 50 Ω line. shape derived from basic rectangular inserting circular hole inside antenna. During...

10.1109/isaect.2018.8618828 article EN 2018-11-01

The new proposed triband and ultra-wideband (UWB) fractal antenna design in this letter is based on octagonal geometry with miniaturized dimensions of <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$45\times 42\times 1.6 mm^{3}$</tex> . support the dielectric FR4 a permittivity 4.4, loss tangent 0.02. patch alimented by microstrip line impedance 50 ohms. designed simulated using High-Frequency Structure Simulator (HFSS) results are confirmed...

10.1109/icoa55659.2022.9934313 article EN 2018 4th International Conference on Optimization and Applications (ICOA) 2022-10-06

This article examines the many properties of a new fractal antenna design based on triangular geometry. The suggested is built cheap FR4 substrate with relative permittivity 4.4, thickness 1.6mm, and dielectric loss tangent 0.02. High Frequency Structure Simulator used to simulate (HFSS). basic structure designed optimized by applying 50 Ω impedance microstrip line feed technique achieve high value return gain loss. simulated results proposed reveal that operates five operating frequency...

10.1109/iraset52964.2022.9738391 article EN 2022 2nd International Conference on Innovative Research in Applied Science, Engineering and Technology (IRASET) 2022-03-03

The modern microwave communication system demands good antenna performance with variety of application. One should serve the purpose many antennas to reduce resource cost and installation cost. For this reason, concept multiband arises. In paper, attention has been given towards design a new multilayer rectangular microstrip patch antenna. A modified compact size line-feed is proposed for operation in UMTS (Universal Mobile Telecommunications System), ISM (Industrial Scientific Medical),...

10.1109/isaect.2018.8618728 article EN 2018-11-01

&lt;span&gt;This letter presents the design, simulation, and measurement of a novel multiband fractal circular antenna for wireless applications. In we used where took ring. Then, in first iteration, added new ring divided into two same size. For second size after dividing it halves. third four. Due to resonator defection, were able reduce starting from 60×70×2 mm&lt;sup&gt;3&lt;/sup&gt; 50×50×1.6 mm&lt;sup&gt;3&lt;/sup&gt;, get frequency 2.48 GHz, generated bandwidths with high gain that...

10.11591/ijece.v12i4.pp3850-3858 article EN International Journal of Power Electronics and Drive Systems/International Journal of Electrical and Computer Engineering 2022-05-24

This research introduces an innovative method for achieving frequency reconfigurability in reference antennas by employing a specially designed antenna structure and optimizing it with HFSS Software. The proposed approach reduces the need incorporating numerous switched elements into while simultaneously enhancing performance terms of S <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11</inf> values bandwidth across various operating bands. has...

10.1109/iraset60544.2024.10548059 article EN 2024-05-16

We propose in this letter, a new reconfigurable triangular antenna design with triangular-shaped slots. The proposed idea allowed us to have successfully multiband operation based on PIN diodes. got better results terms of gain and bandwidth, we possess high achieved 5.23 dB ultra-wideband witch can reach 1.68 GHz, thus, the operates efficiently Universal Mobile Telecommunications System (UMTS) (1.92-2.1 GHz), Broadband Personal Communications Service (PCS) (1.85-2 S-band (2-4 Worldwide...

10.1109/isaect50560.2020.9523654 article EN 2020-11-25

Emerging applications of portable electronics have developed significantly over the past decade, various wireless communication services been disposable, which use many spectrum allocations, for example, industrial scientific medical (ISM), hiperlan and c-band. The stake has become, on one hand, to propose structures microstrip antennas making it possible replace old generation having large dimensions by new products with a rather minimal size resonates at least two frequencies. On other...

10.1109/cmt.2019.8931335 article EN 2019-10-01

&lt;span&gt;In this paper, six-band resonant fractal antenna architecture is proposed and fabricated. The ultimate shape established after six iterations. resonator starshaped, each iteration, a hexadecagon from the subtracted. designed calculated by numerical simulation based on finite element &lt;span&gt;method (ANSYS HFSS) integration technique (CST studio). experimental&lt;/span&gt; measurements were performed vector network analyzer AVR ROHDE AND SCHWARZ ZVB20. gain 4.85 dB, bandwidth...

10.11591/ijeecs.v26.i2.pp785-793 article EN Indonesian Journal of Electrical Engineering and Computer Science 2022-05-01

This letter investigates the properties of a novel multi-band fractal antenna with triangular geometry that can expand its bandwidth, provide multiband functionality, and enable best smart technology. The employs an FR4 as support dimensions 75x75 mm 2 thickness 1.6 mm. A microstrip line impedance 50 ohms feeds patch. high-frequency structure simulator (HFSS) is applied to develop simulate vector network analyzer AVR ROHDE SCHWARZ ZVB20 carried out experimental tests prototype antenna....

10.12928/telkomnika.v22i1.25006 article EN cc-by-sa TELKOMNIKA (Telecommunication Computing Electronics and Control) 2023-10-01
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