Results 11 to 20 of about 313,766 (176)

Active Pointing Compensation of a HTS Multibeam Antenna

open access: yesInternational Journal of Aerospace Engineering
Active pointing compensation of a High Throughput Satellite (HTS) multibeam antenna via microfiber composites (MFCs) is studied in this paper. Electrical-mechanical coupling analysis of MFCs is conducted to quantitatively determine driving forces and ...
Xudong Wang, Pengpeng Wang
doaj   +2 more sources

On the sensitivity of the capacity enhancement of a TDMA system with adaptive multibeam antennas [PDF]

open access: yes, 1997
The paper presents results for the likely capacity improvement when an adaptive multibeam antenna is used in conjunction with air interface parameters akin to the DCS1800 system.
Swales, SC, Tsoulos, GV, Beach, MA
core   +1 more source

Linearity considerations in adaptive antenna array applications [PDF]

open access: yes, 1995
The use of adaptive antenna in mobile communications base stations is self-explanatory. It offers the potential of increased spectrum efficiency, extended range of coverage and reduced delay spread.
Xue, H   +3 more
core   +1 more source

Performance of the TSUNAMI (II) macrocellular field trial system using a dynamic interference source [PDF]

open access: yes, 1999
The TSUNAMI (II) project has been an investigation into the application of adaptive antenna technology for use in future generation mobile communications systems.
Howard, PA   +3 more
core   +1 more source

Reconfigurable wideband patch antenna for cognitive radio [PDF]

open access: yes, 2009
Cognitive radio communication is envisaged to be a new paradigm of methodologies for enhancing the performance of radio communication systems through the efficient utilization of radio spectrum.
AbuTarboush, HF   +14 more
core   +1 more source

Distributed Satellite Cluster Laser Networking Algorithm with Double-Layer Markov DRL Architecture

open access: yesSpace: Science & Technology, 2023
Considering the demand of distributed satellite clusters for high-speed information communication in the future, this paper establishes a laser network model based on optical multibeam antenna.
Yuanzhi He   +4 more
doaj   +1 more source

GEODA-GRUA: Adaptive Multibeam Conformal Antenna for Satellites Communications [PDF]

open access: yes, 2011
The GEODA-GRUA is one conformal adaptive antenna array designed for satellite communications. Operating at 1.7 GHz with circular polarization, it is possible to track and communicate with several satellites at once being able to receive signals in full ...
Arias Campo, Marta   +11 more
core   +1 more source

An Ultra-Wideband Ridged Biconical Multibeam Antenna

open access: yesIEEE Access, 2023
This paper presents an ultra-wideband multibeam antenna with eight radiating elements that are connected to the central cylindrical part. Each radiating element consists of a TEM horn fed by a coaxial to ridged planar waveguide transition. The connection
Mahdi Zoghi   +2 more
doaj   +1 more source

Adaptive beamforming for large arrays in satellite communications systems with dispersed coverage [PDF]

open access: yes, 2011
Conventional multibeam satellite communications systems ensure coverage of wide areas through multiple fixed beams where all users inside a beam share the same bandwidth. We consider a new and more flexible system where each user is assigned his own beam,
Larue de Tournemine, Cécile   +5 more
core   +1 more source

Double U-slots patch antenna for tri-band wireless systems [PDF]

open access: yes, 2010
File shown is the pre-print version of the published paper, with the title "Connected u-slots pathch antenna for WiMAX applications"ABSTRACT: A compact microstrip patch antenna with two U-slots shape is presented.
AbuTarboush, HF   +11 more
core   +1 more source

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