Zobrazeno 1 - 10
of 136
pro vyhledávání: '"Ahsan Altaf"'
Publikováno v:
IEEE Access, Vol 9, Pp 6735-6745 (2021)
The main purpose of this work is to solve the problem of electromagnetic scattering from a chiral cylinder of arbitrary cross-section above an infinite perfect electric conducting (PEC) plane. Using image theory, this problem is reduced to two chiral
Externí odkaz:
https://doaj.org/article/af434e61bad8452ea974e42c41db4203
Publikováno v:
IEEE Access, Vol 9, Pp 62779-62787 (2021)
In this work, a compact, inexpensive, and efficient dual band microwave sensor is proposed. The sensor is based on two Complementary Symmetric Split-Ring Resonators (CSSRRs) and possesses a high $Q$ factor and wide sensing range. These CSSRRs are cou
Externí odkaz:
https://doaj.org/article/c04452063e0b4a77b431d9137f8d32b0
Publikováno v:
IEEE Access, Vol 9, Pp 86429-86448 (2021)
The art of paper folding also known as Origami plays an important role in various research areas of different scientific fields. Origami structures possess many useful characteristics such as reconfigurability, flexibility, deployability, compactness
Externí odkaz:
https://doaj.org/article/16a21f631b184ac4a3528d883bbfaa75
Autor:
Mujeeb Abdullah, Ahsan Altaf, Muhammad Rizwan Anjum, Zulfiqar Ali Arain, Abdul Aleem Jamali, Mohammad Alibakhshikenari, Francisco Falcone, Ernesto Limiti
Publikováno v:
IEEE Access, Vol 9, Pp 91593-91603 (2021)
In this article, an inverted L-shaped monopole eight elements Multiple Input Multiple Output (MIMO) antenna system is presented. The multi-antenna system is designed on a low cost 0.8 mm thick FR4 substrate having dimensions of $136\times68$ mm2 reso
Externí odkaz:
https://doaj.org/article/a093b118c27a4fd39e6fc34b14eab5d5
Autor:
Adnan Ghaffar, Ahsan Altaf, Aayush Aneja, Xue Jun Li, Salahuddin Khan, Mohammad Alibakhshikenari, Francisco Flalcone, Ernesto Limiti
Publikováno v:
International Journal of Antennas and Propagation, Vol 2022 (2022)
In this paper, a low-profile, compact size, inexpensive, and easily integrable frequency reconfigurable antenna system is proposed. The proposed antenna consists of an inverted-F shape antenna, capacitors, and switching PIN diodes. The designed anten
Externí odkaz:
https://doaj.org/article/fdd79624f5dc4f05babd2267ccf923c8
Publikováno v:
Pakistan Armed Forces Medical Journal, Vol 68, Iss 6, Pp 1749-1754 (2018)
Objective: To determine the learning approaches of medical students in their pre-clinical years in a case based learning curriculum. Study Design: Descriptive (Quantitative) study. Place and Duration of Study: Army Medical College Rawalpindi
Externí odkaz:
https://doaj.org/article/7c0f649d569c46319588e79ac89145c5
Autor:
Saad Hassan Kiani, Ahsan Altaf, Muhammad Rizwan Anjum, Sharjeel Afridi, Zulfiqar Ali Arain, Sadia Anwar, Salahuddin Khan, Mohammad Alibakhshikenari, Ali Lalbakhsh, Muhammad Abbas Khan, Raed A. Abd-Alhameed, Ernesto Limiti
Publikováno v:
Sensors, Vol 21, Iss 21, p 7415 (2021)
In this work, a new prototype of the eight-element MIMO antenna system for 5G communications, internet of things, and networks has been proposed. This system is based on an H-shaped monopole antenna system that offers 200 MHz bandwidth ranges between
Externí odkaz:
https://doaj.org/article/3be38953104f412490e3df3896e38f4e
Autor:
Saifur Rahman, Xin-cheng Ren, Ahsan Altaf, Muhammad Irfan, Mujeeb Abdullah, Fazal Muhammad, Muhammad Rizwan Anjum, Salim Nasar Faraj Mursal, Fahad Salem AlKahtani
Publikováno v:
Micromachines, Vol 11, Iss 12, p 1083 (2020)
In this work, a new Multiple Input Multiple Output (MIMO) antenna system with a novel shape inspired by nature is proposed for Fifth-Generation (5G) communication systems. The antenna is designed on a Rogers 5880. The dielectric constant of the subst
Externí odkaz:
https://doaj.org/article/6903efe0c16346e29cbefacaad0434fa
Publikováno v:
BMC Plant Biology, Vol 24, Iss 1, Pp 1-15 (2024)
Abstract Drought stress imposes a serious challenge to cultivate wheat, restricting its growth. Drought reduces the capability of plant to uptake essential nutrients. This causes stunted growth, development and yield. Traditional ways to increase whe
Externí odkaz:
https://doaj.org/article/bbc59543e3fb430b993feaf6582af30b
Autor:
Saad Hassan Kiani, Ahsan Altaf, Mujeeb Abdullah, Fazal Muhammad, Nosherwan Shoaib, Muhammad Rizwan Anjum, Robertas Damaševičius, Tomas Blažauskas
Publikováno v:
Micromachines, Vol 11, Iss 11, p 956 (2020)
This paper presents a novel design of a Multiple Input Multiple Output (MIMO) antenna system for next generation sub 6 GHz 5G and beyond mobile terminals. The proposed system is composed of a main board and two side boards. To make the design cost-ef
Externí odkaz:
https://doaj.org/article/ee2c9aae4d754d0583f3f1614c5e0ec6