Results 51 to 60 of about 330 (175)
Four-channel GaAs multifunction chips with bottom RF interface for Ka-band SATCOM antennas
ETRI JournalReceiver and transmitter monolithic microwave integrated circuit (MMIC) multifunction chips (MFCs) for active phased-array antennas for Ka-band satellite communication (SATCOM) terminals have been designed and fabricated using a 0.15-μm GaAs ...
Jin-Cheol Jeong +2 more
doaj +1 more source
A Systems Engineering Methodology for System of Autonomous Systems: Architecture and Integration
Systems Engineering, Volume 29, Issue 2, Page 169-194, March 2026.ABSTRACT Artificial intelligence and machine learning (AI/ML) rapidly transform systems by providing autonomous capabilities. This new class of systems can become a constituent system in a system of systems (SoS) to evolve it into a system of autonomous systems (SoAS).
Mohammadreza Torkjazi, Ali K. Raz
wiley +1 more source
Spatial Filtering for Underlay Cognitive SatComs [PDF]
, 2013 Herein, we study an underlay beamforming technique for the coexistence scenario of satellite and terrestrial networks with the satellite return link as primary and the terrestrial uplink as secondary. Since satellite terminals are unique in that they always point towards the geostationary satellite, interference received by the terrestrial Base Station
Shree Krishna Sharma +2 more
openaire +1 more source
International Journal of Satellite Communications and Networking, Volume 44, Issue 1, Page 17-33, January/February 2026.In this paper, we investigate the application of signal‐to‐leakage‐plus‐noise ratio (SLNR) beamforming to low Earth orbit non‐terrestrial networks. The SLNR criterion aims at maximizing the received desired signal power for each user while minimizing the overall interference power caused by each user to all other co‐channel receivers. We show that such
M. Rabih Dakkak +3 more
wiley +1 more source
Space Weather and Low‐Altitude Drone Economy
Space Weather, Volume 24, Issue 1, January 2026.Abstract Unmanned Aerial Vehicles (UAVs) are becoming integral to the emerging low‐altitude economy, operating primarily below 3,000 m for applications such as logistics, inspection, precision agriculture, and urban air mobility. The safe and reliable operation of UAVs depends critically on communication, navigation, and surveillance (CNS) systems ...
Dabin Xue +3 more
wiley +1 more source
Transformer‐Enhanced Multi‐Satellite IRS Coordination for Next‐Generation LEO Communications
IET Communications, Volume 20, Issue 1, January/December 2026.This paper introduces a novel transformer‐enhanced framework for multi‐satellite intelligent refelecting surfaces (IRS) coordination that addresses these fundamental limitations through physics‐informed neural architectures incorporating orbital dynamics modelling, multi‐head self‐attention mechanisms for temporal dependency capture across rapidly ...
Ali Hussein Radhi +2 more
wiley +1 more source
Network Coding over SATCOM: Lessons Learned [PDF]
, 2015 Satellite networks provide unique challenges that can restrict users' quality of service. For example, high packet erasure rates and large latencies can cause significant disruptions to applications such as video streaming or voice-over-IP. Network coding is one promising technique that has been shown to help improve performance, especially in these ...
Jason Cloud, Muriel Médard
openaire +4 more sources
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.The study presents the design and development of a plasma‐based antenna array system for the UHF band. The system features an omnidirectional plasma antenna as its active radiator, a novel approach that has not been previously explored. Surrounding plasma reflectors form a reconfigurable array around the monopole plasma antenna for beam shaping and ...
Manisha Jha +5 more
wiley +1 more source
Design of a Dual‐Polarised Wide‐Band Stacked‐Patch Array for Ku Band Satcom On‐the‐Move
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.This paper presents a dual‐linearly polarised stacked 2 × 2 patch antenna array designed for SATCOM on‐the‐move in the Ku band, operating over the receive (10.7–12.75 GHz) and transmit (13.75–14.5 GHz) sub‐bands. The array is fed by two perpendicular corporate networks enabling reconfiguration of orthogonal linear polarisations, which can be combined ...
Davide Guarnera +7 more
wiley +1 more source
Multiband Radome Design for Satellite Communication Based on Particle Swarm Optimization
IET Microwaves, Antennas &Propagation, Volume 20, Issue 1, January/December 2026.We present a methodology for the automatic design, optimization and validation of wide‐angle, multiband and multilayer radomes. The approach is demonstrated through a nontrivial case study involving realistic dispersive materials and six distinct TX/RX satellite communication bands. ABSTRACT Radomes play a fundamental role in protecting antenna systems
Olga Basile +3 more
wiley +1 more source