Zobrazeno 1 - 10
of 241
pro vyhledávání: '"Esmat A. Abdallah"'
Publikováno v:
Magnetism, Vol 4, Iss 3, Pp 209-239 (2024)
In this article, a comprehensive review is presented of recent technological advancements utilizing electromagnetic sensors in the microwave range for detecting human vital signs and lung water levels. With the main objective of improving detection a
Externí odkaz:
https://doaj.org/article/f9442af97f8e444685bebe0a68b5de0a
Publikováno v:
Sensors, Vol 24, Iss 5, p 1658 (2024)
This article presents an in-depth investigation of wearable microwave antenna sensors (MASs) used for vital sign detection (VSD) and lung water level (LWL) monitoring. The study looked at two different types of MASs, narrowband (NB) and ultra-wideban
Externí odkaz:
https://doaj.org/article/b18edfddf5414ecd82478f39816ec179
Autor:
Nermeen A. Eltresy, Abd Elhamid M. Abd Elhamid, Dalia M. Elsheakh, Hadia M. Elhennawy, Esmat A. Abdallah
Publikováno v:
IEEE Access, Vol 9, Pp 49476-49486 (2021)
A transparent antenna array based on silver sandwiched indium tin oxide (AgITO) heterostructure thin films is presented. The AgITO is sputtered on both sides of soda-lime glass (SLG) substrate, and the three thin films deposition parameters are optim
Externí odkaz:
https://doaj.org/article/b74cb2c8bdd14a568be5964a7a4c5e99
Publikováno v:
IEEE Access, Vol 9, Pp 45123-45136 (2021)
In the past decade, the majority of the launched satellites have a weight exceeds 1 Ton. Its development takes a long time, high cost, and has a large risk of failure, and does not allow for testing new technologies to avoid the mission’s failure.
Externí odkaz:
https://doaj.org/article/344ced7b89f344a49c91132bcef38836
Publikováno v:
IEEE Access, Vol 8, Pp 37250-37264 (2020)
This paper exhibits a low profile dual-polarized MIMO antenna with high isolation to meet the requirements of 5G smartphones. The integration between a vertically polarized slot and a horizontally polarized slot is investigated and applied for 28 GHz
Externí odkaz:
https://doaj.org/article/97b2321666344887ba4ab327ec604d80
Publikováno v:
IET Microwaves, Antennas & Propagation, Vol 13, Iss 3, Pp 286-290 (2019)
In this study, a single‐fed printed multiband antenna for 4G/5G wireless communication systems is presented. The proposed multiband antenna consists of Franklin strip monopole antenna to cover 4G, and wireless applications (WLAN and WiMAX), and a r
Externí odkaz:
https://doaj.org/article/38f2eee1708a4faa8b57b3964e61ca81
Publikováno v:
Engineering Reports, Vol 2, Iss 3, Pp n/a-n/a (2020)
Abstract This article presents a solution for the low gain and the poor efficiency of the on‐chip antennas (OCA). The four elements of Quasi‐Yagi‐Uda antennas (QYUA) are introduced based on the diversity technique to reduce the interference bet
Externí odkaz:
https://doaj.org/article/0dc672f7aeb14f20b99318d53757cbd9
Autor:
Dalia M. Elsheakh, Mohamed I. Ahmed, Gomaa M. Elashry, Saad M. Moghannem, Hala A. Elsadek, Waleed N. Elmazny, Nelly H. Alieldin, Esmat A. Abdallah
Publikováno v:
Sensors, Vol 21, Iss 21, p 7021 (2021)
This paper presents a rapid diagnostic device for the detection of the pandemic coronavirus (COVID-19) using a micro-immunosensor cavity resonator. Coronavirus has been declared an international public health crisis, so it is important to design quic
Externí odkaz:
https://doaj.org/article/1be4e5f4236f456896f33217f8a5bf96
Autor:
Shaimaa Abdelaziz Mahmoud Osman, Mohamed S. El-Gendy, Hadia Mohamed Saeed El-Hennawy, Esmat A. Abdallah
Publikováno v:
Progress In Electromagnetics Research M. 112:243-253
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::12885446f5b175b90cff1e70b5a3463e
https://doi.org/10.2528/pierm22070508
https://doi.org/10.2528/pierm22070508
Autor:
Tamer G. Abouelnaga, Esmat A. Abdallah
Publikováno v:
The Applied Computational Electromagnetics Society Journal (ACES).
In this article, the design and the development of ultra-wideband UWB branch-line couplers BLCs with a novel method to control the coupling imbalance are proposed. The proposed UWB BLC is suitable for the 5G low-noise amplifier (LNA) design. UWB 4-br
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e01f08828ee260efa21084d30e60b923
https://doi.org/10.13052/2022.aces.j.370908
https://doi.org/10.13052/2022.aces.j.370908