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interview
2021
Electronics Letters
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electrical performance in W-band designs. ...
Within this project framework, my research focuses on the design and synthesis of cavity-based filters for the next generation of W-band (75 -110 GHz) satellite systems. ...
doi:10.1049/ell2.12137
fatcat:bxqvk5gcdjc4fhtqhjjgxzzqmy
MTT-Sat Challenge Launches First Projects [MTT-S Society News]
2020
IEEE Microwave Magazine
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An existing GaN SSPA used in our prior work has a 1-dB output power compression point of 1 W, saturation power of approximately 2 W, and a power-added efficiency of 10%. ...
This is becoming increasingly difficult due to the saturation of communication bands owing to the large number of CubeSats in orbit. ...
doi:10.1109/mmm.2019.2963614
fatcat:ykkhot3inncw3b4dxilrcyqyri
Predicting Joint Effects on CubeSats to Enhance Internet of Things in GCC Region Using Artificial Neural Network
2021
Mobile Information Systems
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However, despite satellites' global connectivity and wide footprint, still atmospheric and dust impairments are open challenges that face satellite systems, especially at high-frequency bands in arid and ...
Satellite telecommunication systems promise to bridge digital gaps and deliver wireless communication services to any corner of the world. ...
Acknowledgments is research was funded by the Deanship of Scientific Research at Taif University, Kingdom of Saudi Arabia, Taif University Researchers Supporting Project (no. TURSP-2020/265). ...
doi:10.1155/2021/1827155
fatcat:rjecwwaktncerj7dgdgcs7mum4
Survey on Land Mobile Satellite System: Challenges and Future Research Trends
2019
IEEE Access
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This includes the classification of LMS systems, the operating frequency bands, and the representative Mobile Satellite Services (MSS) systems. ...
The research challenges and future research are further described. Such information will contribute to the understanding of satellite systems and the currently faced issues that must be addressed. ...
The operating frequency bands used in these satellite systems are also highlighted. ...
doi:10.1109/access.2019.2941900
fatcat:2bwrt2ykszaabgl5m74fxf53ge
Efficient Waveform Design for High-Bit-Rate W-band Satellite Transmissions
2011
IEEE Transactions on Aerospace and Electronic Systems
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In the EHF (Extremely High Frequency) domain, W-band (75-110 GHz) offers promising perspectives for future satellite communications, mainly in terms of large bandwidth availability for high-bit-rate transmission ...
In this work 1 , an innovative physical (PHY) layer design for broadband satellite connections operating in W-band is proposed, which is based on the Prolate Spheroidal Wave Functions (PSWFs). ...
Main issues on W-band satellite communications W-band satellite communication is a novel and very interesting field of research that needs to be deeply investigated in order to design the proper radio ...
doi:10.1109/taes.2011.5751238
fatcat:4zceoqitpzbhjjszmug5qaxvue
Space tubes - A major challenge
1982
1982 International Electron Devices Meeting
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A real challenge faces the tube community in the requirement to provide a voltage tunable Local Oscillators Sources of 1 mW output over the range of 600 to 2000 GHz. ...
U.S. companies have been involved in space communication and the exploration of the solar system since the early 1960's. ...
doi:10.1109/iedm.1982.190248
fatcat:7t7aeaqruzgy5dboh6hocn7vjy
Communication satellite power amplifiers: current and future SSPA and TWTA technologies
2015
International Journal of Satellite Communications And Networking
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We find an increase in output power from the 1993 study of >200% for Ku-band TWTAs and C-band SSPAs, and >1000% increase for C-band TWTAs. ...
A second analysis is conducted using failure records and telemetry of 16 geostationary satellites equipped with 659 amplifiers: 535 SSPAs and 124 TWTAs. ...
Tseytlin for the useful discus- ...
doi:10.1002/sat.1098
fatcat:n2jgk45mmjdhfm2knu6om4if2e
CubeSat Communications: Recent Advances and Future Challenges
[article]
2020
arXiv
pre-print
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We further present recent advances in the area of CubeSat communications, with an emphasis on constellation-and-coverage issues, channel modeling, modulation and coding, and networking. ...
Given the increasing number of space-related applications, research in the emerging space industry is becoming more and more attractive. ...
The use of RF in high-frequency bands (e.g., SHF and EHF bands) can provide a solution for high-data-rate inter-satellite links. ...
arXiv:1908.09501v2
fatcat:yc22n5bwsjbdjpgdcpfoyuhv4u
A Critical Review of Baseband Architectures for CubeSats Communication Systems
[article]
2022
arXiv
pre-print
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Small satellite communications recently entered a period of massive interest driven by the uprising space applications. ...
It is concluded that CubeSat communication systems still face many challenges, namely the development of energy-efficient high-speed modems that satisfy CubeSats requirements. ...
consumption of the entire communication system in W, and the frequency bands used. ...
arXiv:2201.09748v1
fatcat:5rpe7boqqjberd4rxbq6rtu5yq
High-Speed Satellite Mobile Communications: Technologies and Challenges
2004
Proceedings of the IEEE
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The challenges for future broadband satellite systems, therefore, lie in the proper deployments of state-of-the-art satellite technologies to ensure seamless integration of the satellite networks into ...
This paper presents an overview of the future high-speed satellite mobile communication systems, the technologies deployed or planned for deployments, and the challenges. ...
Navaie (University of Toronto, Toronto, ON, Canada) and Dr. H. Mouftah (University of Ottawa, Ottawa, ON, Canada) for their review. ...
doi:10.1109/jproc.2003.821907
fatcat:snyicgivbzfele2b7bq4hvqyuq
Signal Processing for High Throughput Satellite Systems: Challenges in New Interference-Limited Scenarios
[article]
2018
arXiv
pre-print
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All the reviewed techniques are essential in empowering satellite systems to support the increasing demands of the upcoming generation of communication networks. ...
The field of satellite communications is enjoying a renewed interest in the global telecom market, and very high throughput satellites (V/HTS), with their multiple spot-beams, are key for delivering the ...
One main approach is to consider satellite communication links at extremely high frequencies such as the W-band [6] . ...
arXiv:1802.03958v1
fatcat:zsstnxx4pjhprfews6hranzgue
System-Level Evaluation of Beam Hopping in NR-Based LEO Satellite Communication System
[article]
2022
arXiv
pre-print
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Satellite communication by leveraging the use of low earth orbit (LEO) satellites is expected to play an essential role in future communication systems through providing ubiquitous and continuous wireless ...
Then based on NR protocols, we present the first system-level evaluations of beam hopping scheme in LEO satellite system under different operating frequency bands and traffic models. ...
Section II introduces the simulation methodology used in LEO satellite communication system. ...
arXiv:2205.10721v1
fatcat:ogdmykkgtbbu3k6tvg5pnjfoqa
Sky High 5G: New Radio for Air-to-Ground Communications
[article]
2020
arXiv
pre-print
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Then we confirm the feasibility of NR A2G systems with a performance study in a range of bands from below 7 GHz to millimeter wave frequencies. ...
We also identify the major challenges associated with NR A2G communications, discuss enhancements to counteract the challenges, and point out fruitful avenues for future research. ...
In July 2018, the Electronic Communications Committee (ECC) withdrew the previous decision on the harmonized use of A2G systems in the 1900-1920 MHz band. ...
arXiv:2003.06361v1
fatcat:vykwsefqqrcchjqt6xo6upd3fi
Triple rectangular notch UWB antenna using EBG and SRR
2020
IEEE Access
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The 5G and WLAN bands are notched by using a pair of electromagnetic bandgap (EBG) structures while the satellite downlink band is notched by using two split-ring resonators (SRRs). ...
The peak gain of the UWB antenna is 3.86 dBi but it sharply decreases up to -13 dBi at stop-bands. ...
The design presented in [21] offers a WLAN band and satellite downlink band, using the step slot technique. ...
doi:10.1109/access.2020.3047401
fatcat:hmqgzgj7hncejk3w3k3kxtzr6q
Implementation and investigation of circular slot UWB antenna with dual-band-notched characteristics
2011
EURASIP Journal on Wireless Communications and Networking
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The design and analysis of an ultra wideband aperture antenna with dual-band-notched characteristics are presented. ...
A conceptual circuit model, which is based on the measured impedance of the proposed antenna, is also shown to investigate the dual-band-notched characteristics. ...
Acknowledgements The authors would like to thank the Islamic Azad University Science & Research Branch (SRBIAU) and Iran Research Institute for ICT (ITRC) for bracing this research. ...
doi:10.1186/1687-1499-2011-88
fatcat:lp5dmx4fnvhpdalgftmatfqdha
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