Zobrazeno 1 - 10
of 18
pro vyhledávání: '"Arshad Karimbu Vallappil"'
Publikováno v:
IEEE Access, Vol 12, Pp 6684-6697 (2024)
In this research study, a metamaterial (MTM) based $1\times4$ linear antenna array is designed with an integrated butler matrix (BM) beamforming network (BFN) to execute the switched-beam antenna array (SAA) operation, which can be employed for sub-6
Externí odkaz:
https://doaj.org/article/bbd5c9da26fa4c6ebebabecd9b09d006
Publikováno v:
Crystals, Vol 13, Iss 2, p 360 (2023)
In this paper, a compact design and new structure of bowtie antenna with dual-band characteristics for the 5G and public safety bands in intelligent transport systems (ITS) is presented. The antenna consists of a double-sided bowtie radiating patch w
Externí odkaz:
https://doaj.org/article/13de913e5d644cda949ca63a01860815
Autor:
Arshad Karimbu Vallappil, Bilal A. Khawaja, Mohamad Kamal A. Rahim, Muhammad Uzair, Mohsin Jamil, Qasim Awais
Publikováno v:
Fractal and Fractional, Vol 7, Iss 2, p 158 (2023)
In this paper, the design, simulation, fabrication, and characterization study of a low-cost and directional hybrid four-element (2 × 2 configuration) Minkowski–Sierpinski fractal antenna array (MSFAA) for the high-efficiency IEEE 802.11ax WLANs (
Externí odkaz:
https://doaj.org/article/72978a849d97494884df6b2429536f5f
Autor:
Arshad Karimbu Vallappil, Mohamad Kamal A. Rahim, Bilal A. Khawaja, Noor Asniza Murad, Mohammed Gajibo Mustapha
Publikováno v:
IEEE Access, Vol 9, Pp 3970-3987 (2021)
Due to the rapid development of wireless communication technologies, the number of wireless users are radically increasing. Currently, ~23 billion wireless devices are connected to the internet, and these numbers are expected to increase manifolds in
Externí odkaz:
https://doaj.org/article/0a41fa389ca14f20a80b651cba980c67
Publikováno v:
IEEE Access, Vol 8, Pp 13573-13583 (2020)
This paper proposes a novel compact 4 × 4 butler matrix (BM) with improved bandwidth based on open-circuit coupled-lines and interdigital capacitor unit-cell to develop composite right/left handed (CRLH) transmission-line (TL) metamaterial structure
Externí odkaz:
https://doaj.org/article/65096983e74044c4ab95e3c23a409821
Autor:
Arshad Karimbu Vallappil, Bilal A. Khawaja, Mohamad Kamal A. Rahim, Muhammad Naeem Iqbal, Hassan T. Chattha, Mohamad Fakrie bin Mohamad Ali
Publikováno v:
Fractal and Fractional, Vol 6, Iss 8, p 422 (2022)
A compact triple-band operation ultra-wideband (UWB) antenna with dual-notch band characteristics is presented in this paper. By inserting three metamaterial (MTM) square split-ring resonators (MTM-SSRRs) and a triangular slot on the radiating patch,
Externí odkaz:
https://doaj.org/article/80c1841ae0c345f0a5f3e0124e24de73
Autor:
Arshad Karimbu Vallappil, Bilal A. Khawaja, Mohamad Kamal A. Rahim, Muhammad Naeem Iqbal, Hassan T. Chattha
Publikováno v:
Micromachines, Vol 13, Iss 2, p 198 (2022)
In this article, two distinct kinds of metamaterial (MTM) antennas are proposed for fifth-generation (5G) indoor distributed antenna systems (IDAS). Both antennas operate in the sub-6 GHz 5G band, i.e., 3.5 GHz. The antenna’s radiating structure is
Externí odkaz:
https://doaj.org/article/977f8f0fcb8047b8acef12667b12b158
Publikováno v:
International journal of electrical and computer engineering systems. 13:839-848
A highly reliable and efficient communication system is needed for a vehicle to navigate and drive to the destination without human control (known as an autonomous or self-driving vehicle). In this work, we consider various parameters for the antenna
Publikováno v:
2022 International Symposium on Antennas and Propagation (ISAP).
Publikováno v:
IEEE Access, Vol 8, Pp 13573-13583 (2020)
This paper proposes a novel compact 4 × 4 butler matrix (BM) with improved bandwidth based on open-circuit coupled-lines and interdigital capacitor unit-cell to develop composite right/left handed (CRLH) transmission-line (TL) metamaterial structure