Zobrazeno 1 - 10
of 100
pro vyhledávání: '"Hesham A. Mohamed"'
Autor:
Hesham A. El-Hakim, Hesham A. Mohamed
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-13 (2023)
Abstract A triple-band microstrip patch antenna designed for the IEEE 802.16e WiMAX, IEEE 802.11a WLAN, C-band downlink communications, and Ku-band radar recent applications is suggested in this article. The planned antenna operates at 2.45, 6, and 1
Externí odkaz:
https://doaj.org/article/919ab54162554f81850790e8c3257c91
Publikováno v:
Ain Shams Engineering Journal, Vol 14, Iss 6, Pp 102182- (2023)
The growing development of inter-networking devices and internet-of-things (IoT) are required to make use of all possible energy sources for different types of sensor. Ambient renewable energy resources are needed and received more attention this era
Externí odkaz:
https://doaj.org/article/6bb7ea4be1494be0b449224d07180537
A Pattern Reconfigurable Antenna Using Eight-Dipole Configuration for Energy Harvesting Applications
Publikováno v:
Sensors, Vol 23, Iss 20, p 8451 (2023)
A pattern reconfigurable antenna, composed of eight elements, is proposed for energy harvesting applications. Pattern reconfigurable antennas are a promising technique for harvesting from different wireless sources. The radiation pattern of the propo
Externí odkaz:
https://doaj.org/article/4ef65e130afb45208f55768a19bb210f
Publikováno v:
IEEE Access, Vol 10, Pp 73601-73609 (2022)
A millimeter-wave (mm-wave) antenna with enhanced gain for new 5G networks is introduced in this work. A rectangular slot antenna operating at the fundamental mode of the desired frequency band is utilized in this study. The antenna gain is improved
Externí odkaz:
https://doaj.org/article/b07e81e1a1a244c5a288ffbd5b5b4852
Tunable Filtenna With DGS Loaded Resonators for a Cognitive Radio System Based on an SDR Transceiver
Autor:
Ahmed A. Ibrahim, Hesham A. Mohamed, Alan Rodrigo Diaz Rizo, Ramon Parra-Michel, Hassan Aboushady
Publikováno v:
IEEE Access, Vol 10, Pp 32123-32131 (2022)
This paper introduces the design of a filtenna for cognitive radio systems. Four varactor diodes, which are inserted in the bandpass filter, are used to achieve the desired tunability. The proposed bandpass filter is integrated with a wideband monopo
Externí odkaz:
https://doaj.org/article/cc91728c9df74d7083abec124b2ede26
Publikováno v:
Micromachines, Vol 14, Iss 5, p 1006 (2023)
This paper presents a single-substrate microstrip rectenna for dedicated radio frequency energy harvesting applications. The proposed configuration of the rectenna circuit is composed of a clipart moon-shaped cut in order to improve the antenna imped
Externí odkaz:
https://doaj.org/article/b6226ea32b024d3cbf7d451f8ae2bbe4
Autor:
Sara Yehia Abdel Fatah, Ehab K. I. K. I. Hamad, Wael Swelam, A. M. M. A. Allam, Mohamed Fathy Abo Sree, Hesham A. Mohamed
Publikováno v:
IEEE Access, Vol 9, Pp 29555-29564 (2021)
In this paper, single-layer ultra-Wide Band (UWB) microstrip patch antennas loaded with asymmetrical U-shaped slot in both microwave and millimeter wave applications are presented. These novel antennas cover a fractional bandwidth around 40% in both
Externí odkaz:
https://doaj.org/article/d68c1bf7856f418b835a057c82b195a1
Publikováno v:
IEEE Access, Vol 9, Pp 156566-156580 (2021)
The Theory of Characteristic Modes (TCM) provides a natural and systematic approach for designing Multiple-Input Multiple-Output (MIMO) antennas with high efficiency and uncorrelated antenna patterns. Recent progress in the growing field of MIMO ante
Externí odkaz:
https://doaj.org/article/44cbd4bcba3642bea57fbf218ee84b64
Publikováno v:
IEEE Access, Vol 8, Pp 143723-143733 (2020)
This paper presents the design and analysis of a new compact quad-band metamaterial absorber (MMA). The proposed structure is constructed as an array of 12 × 13 unit cells, each one is based on a combination of interlaced I/square resonators support
Externí odkaz:
https://doaj.org/article/a12b5f8454af479fab2dc03403221aef
Publikováno v:
Micromachines, Vol 14, Iss 3, p 527 (2023)
In this work, a spectrum-sensing monopole antenna was used to operate in different frequency bands for cognitive radio applications. The proposed antenna consists of a folded monopole antenna with a partial ground plane, and it can be used for variou
Externí odkaz:
https://doaj.org/article/d33921cb0ebe4cb49f5c812b391c5503