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Subject: search.filters.subject.Antennas

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    Design and simulation of high gain 2-element, 4-element and 16-element arrays of microstrip patch antenna for terahertz applications based on photonic crystals
    (AIP Publishing, 2024) Benlakehal, Mohamed Elamine; Shayea, Ibraheem; El-Saleh, Ayman A.; Alhammadi, Abdulraqeb
    In the past years, the study of microstrip patch antennas has made significant progress because of their miniature size, low cost, compatibility, and ease of manufacture compared to traditional antennas. In this study, different microstrip patch antenna array configurations including 2-element, 4-element and 16-element were studied and designed in the range of frequencies of 0.25- 0.55 THz. This study aims to enhance the gain and the radiation properties of these proposed antenna array configurations using air cylinder holes photonic band gap (PBG) substrate instead of the homogeneous substrate. Simulation was conducted with the help of CST Microwave Studio software for the different substrates. To obtain better radiation properties, the proposed antenna arrays have around 0.35 THz resonant frequencies where there exists a low atmospheric attenuation window in the terahertz band. The outcomes demonstrated that the studied antenna arrays based on the photonic band gap substrate provided additional performance in terms of the return loss, bandwidth, gain, directivity and beamwidth compared to their corresponding conventional antenna arrays counterparts based on the homogeneous substrate. Among all designed antenna array configurations, the 16-element antenna array based on the photonic band gap has successfully achieved impressive gain and directivity performance of 16.75 dB and 17.40 dBi, respectively. Finally, the proposed antenna arrays are highly promising candidates for wireless communications, imaging, sensing, medical diagnosis and threat detection.
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    A 2.3-14 GHz UWB planar octagonal antenna with modified ground plane
    (Wiley Periodicals, 2013) Bitchikh, M.; Aksas, R.; Azrar, Arab; Kimouche, H.
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    UWB coplanar waveguide octagonal antenna
    (Springer, 2016) Bitchikh, Mounira; Azrar, Arab; Aksas, Rabia
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    Combating multiple access interference in wireless communication systems employing smart antennas
    (IEEE, 2009) Recioui, Abdelmadjid; Bentarzi, Hamid; Azrar, Arab; Dehmas, Mokrane; Challal, Mouloud
    Smart Antennas constitute a promising technology in wireless communication systems as they mitigate multiple access interference through spatial filtering. One basic building block of smart antennas is the antenna array itself. This latter generates a wide range of aspects that can be the subject of deep investigations namely their geometry, physical parameters, feeding techniques etc... Hence, it is important to investigate whether certain array geometry will enable optimal performance. In this work, the effect of the array geometry choice on the interference rejection capability is investigated. Linear and circular array geometries are considered with mutual coupling between real antenna elements taken into account. Assessment of both geometries is done through a figure of merit that takes into account the rejection capability and radiation characteristics of the array
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    New UWB antenna design for wireless communications
    (2012) Bithikh, M.; Aksas, R.; Kimouche, H.; Azrar, A.
    The presented work in this article concerns a new ultra-wideband antenna design with an octagonal configuration and reduced dimensions. Different prototypes have been simulated and implemented in the form of monopoles. These prototypes have shown an admissible agreement between simulations and measurements and ultra-wide bands running from 3.1 to 14 GHz for wireless applications. © 2012 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:692–697, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26666