Beamforming and signal tracking issues in adaptive antenna arrays' signal processing

Anton, Alberto; Martínez, Raquel; Salas, Miguel Ángel

doi:10.1049/cp.2009.1163

Cited by 4 publications

(5 citation statements)

References 8 publications

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“…Because of the reliability issues with mechanical scanning, electronic scanning of the antenna beam must be used. In [43] algorithms for tracking LEO satellites using adaptive antennas are considered. However, in that investigation, simple cross-dipole antennas are used which do not meet the system level link budget requirements for high data rates and consumer grade connectivity needs.…”

Section: B Reasons the New System Is Attractive To Customersmentioning

confidence: 99%

Systems Engineering of a Terabit Elliptic Orbit Satellite and Phased Array Ground Station for IoT Connectivity and Consumer Internet Access

Sturdivant

Chong

2016

IEEE Access

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Systems engineering of a satellite based data communication baseline concept is presented to achieve terabit per second throughput. It uses a constellation of five Molniya satellites and one dimension electronic scanning phased array ground terminals. The result is a baseline concept that meets customer needs for internet of things (IoT) data connectivity and for consumer high data rate internet access. Molniya orbit satellites provide the benefits of available bandwidth, lack of interference with other satellite links, and less crowded orbital paths. A drawback is that they are not geostationary since they have highly elliptical orbits. This requires ground station terminals with the ability track the satellites as they pass overhead during their orbit. However, since Molniya satellites with a properly selected eccentricity pass along the same path at nearly constant elevations relative to a fixed position on the Earth, simple and low-cost single axis scanning antennas can be used for the consumer ground terminal. This is a distinct advantage compared with competing low earth orbit constellations. The proposed solution leverages advances in semiconductor technology and low-cost antenna laminate substrate materials for an affordable phased array tracking ground terminal antenna. This paper presents link budget trade studies, system concept, orbital dynamics simulation results, and ground station component trade study.

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Section: B Reasons the New System Is Attractive To Customersmentioning

confidence: 99%

Systems Engineering of a Terabit Elliptic Orbit Satellite and Phased Array Ground Station for IoT Connectivity and Consumer Internet Access

Sturdivant

Chong

2016

IEEE Access

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“…They can produce multiple beams to simultaneously support different satellites. Multibeam antennas create narrow beams limited to a fixed number of scan directions that the system switches back and forth from [11]- [13]. A single multi-column array may be driven by a feed network to produce multiple beams from a single aperture.…”

Section: Introductionmentioning

confidence: 99%

A review: Performance of multibeam dual parabolic cylindrical reflector antennas in LEO satellites

Mohamed Sanad,

Noha Hassan

2024

ITU J-FET

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The characteristics of multibeam dual parabolic cylindrical reflector antennas are summarized in this article. They can generate an arbitrary number of beams with arbitrary tilt angles for each beam. They can be remotely controlled to cover any arbitrary area, of any shape and size, even if the antenna was mounted on a quasi-stationary platform. Their performance in Low-Earth Orbit (LEO) satellites and ground stations (terminals) have been presented. A simple beam tracking technique was developed. For any specific satellite orbit, the orientation of the ground-station antenna could be adjusted such that its beams are parallel to the satellite's beams and directed toward them. The ground-station antenna can simultaneously communicate with multiple satellites in different orbits. A single antenna can cover the whole mm-band (17.8-30 GHz), which is one of the most widely used bands in LEO satellites. The overall size of a mm-wave antenna, generating 20-24 dB gain, is 14.8x10.4x3.7 cm3 and its weight is 0.37 kg.

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“…The adaptive beamforming algorithms work efficiently, and the characteristic performances of different algorithms are almost identical under ideal conditions. However, nonideal cases due to the highly dense complex communication environments, bring trade‐offs in accordance with implementation costs and complexities [3, 22]. The performance characteristics of the systems are highly dependent on which adaptive beamforming is used in a particular scenario.…”

Section: Introductionmentioning

confidence: 99%

Computer‐aided experimental studies for adaptive beamforming algorithms and array processing in engineering education

Salas‐Natera,

Zorkun,

Rodríguez‐Osorio

2024

Comp Applic In Engineering

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Smart antenna and digital antenna systems are considered as a crucial technology for current and future communication systems supporting 5G/6G and nonterrestrial‐networks communications. Based on the information of the received signal/s, smart antenna systems toward the radiation pattern to the desired direction/s. This technique is known as adaptive beamforming. The theories and the applications of adaptive beamforming are taught in engineering educational courses. This paper proposes a set of real‐time interactive experiments for adaptive beamforming algorithms in antenna array processing subject. The proposed experiments can be performed with the computer‐aided experimental studies tool prepared in the MATLAB® environment. The users can easily make comparisons and can perform trade‐offs between different types of adaptive beamforming algorithms, scenarios, and antenna architecture. This is used as a teaching tool for a graduate course on adaptive beamforming algorithms.

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Beamforming and signal tracking issues in adaptive antenna arrays' signal processing

Cited by 4 publications

References 8 publications

Systems Engineering of a Terabit Elliptic Orbit Satellite and Phased Array Ground Station for IoT Connectivity and Consumer Internet Access

Systems Engineering of a Terabit Elliptic Orbit Satellite and Phased Array Ground Station for IoT Connectivity and Consumer Internet Access

A review: Performance of multibeam dual parabolic cylindrical reflector antennas in LEO satellites

Computer‐aided experimental studies for adaptive beamforming algorithms and array processing in engineering education

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