Zobrazeno 1 - 10
of 37
pro vyhledávání: '"Muhammad Naeem Iqbal"'
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:
ACS Materials Au, Vol 3, Iss 6, Pp 659-668 (2023)
Externí odkaz:
https://doaj.org/article/6cb1dc94b6a24746a1824e64c6700ec0
Autor:
Muhammad Naeem Iqbal, Mohd Fairus Mohd Yusoff, Mohamad Kamal A. Rahim, Mohamad Rijal Bin Hamid, Zaharah Johari, Hamood Ur Rahman
Publikováno v:
IEEE Access, Vol 9, Pp 119598-119612 (2021)
In this paper, a circularly polarized Transmitarray antenna design for the Ku-band frequency range is presented. The transmitarray antenna with 121 elements is designed using a four-layer double square ring with a center patch unit cell. The Unit cel
Externí odkaz:
https://doaj.org/article/ecd21501cc254477878a26c7dd34b3aa
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
Autor:
Emilia Hagman, Amira Elimam, Natalia Kupferschmidt, Kerstin Ekbom, Stephan Rössner, Muhammad Naeem Iqbal, Eric Johnston, Maria Lindgren, Tore Bengtsson, Pernilla Danielsson
Publikováno v:
PLoS ONE, Vol 15, Iss 10, p e0240030 (2020)
BackgroundPrecisely engineered mesoporous silica has been shown to induce weight loss in mice, but whether it is safe to use in humans have not investigated.ObjectiveThe aim was to determine whether oral dosing, up to 9 grams/day, of precisely engine
Externí odkaz:
https://doaj.org/article/a6c7413b04be46d5b96efd6311f3d1f7
Publikováno v:
Materials, Vol 14, Iss 21, p 6412 (2021)
Biocompatibility of yttria (3 mol%) stabilized zirconia ceramics, 3Y-TZP, was affected to a large degree as a result of protein adsorption from human saliva that in turn depends on materials surface properties. Variable nano-roughness levels in 3Y-TZ
Externí odkaz:
https://doaj.org/article/731dd2a820cb45538739338c1c60b16c
Publikováno v:
International Journal of Antennas and Propagation, Vol 2014 (2014)
A novel ultrawideband fractal antenna in monopole configuration is proposed. Wideband behavior and miniaturization is achieved using concentric heptagonal array structure. Coplanar waveguide is used to feed fractal antenna. Base shape for fractal ant
Externí odkaz:
https://doaj.org/article/8b2326b1eae74051bdfbf161fefa5504
Autor:
Muhammad Amir Haziq Kamarusshahrin, Mohamad Kamal A Rahim, Muhammad Naeem Iqbal, Noor Asniza Murad, Noor Asmawati Samsuri, Mohd Fairus Mohd Yusoff, Farid Zubir, Mohamad Rijal Hamid, Osman Ayop
Publikováno v:
ELEKTRIKA- Journal of Electrical Engineering. 22:70-74
This paper presents the signal strength measurement of the 4G network for an outdoor environment. The signal strength is measured at the Universiti Teknologi Malaysia (UTM) at 1.8 GHz and 2.6 GHz. The signal measurement is compared with the simulatio