A New Beamforming Technique for the Synthesis of Uniform Circular Antenna Arrays Using Reduced Number of Antenna Elements

Alnaggar, Lamia Mohammed; Abd-Elnaby, Mustafa M.; Hussein, Amr H.

doi:10.1109/access.2021.3091439

Cited by 6 publications

(2 citation statements)

References 33 publications

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“…The most popular and effective method for providing adaptive array beamforming is the well-known phased array antenna (PAA), which is an array of antenna elements controlled by signals with well-defined phase relations between those elements [28].…”

Section: Architecture Of the Proposed Modelmentioning

confidence: 99%

Beamforming Array Antenna Technique Based on Partial Update Adaptive Algorithms

A. Shubber,

M. Jamel,

K. Nahar

2023

Int. j. electr. comput. eng. syst. (Online)

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The most important issues for improving the performance of modern wireless communication systems are interference cancellation, efficient use of energy, improved spectral efficiency and increased system security. Beamforming Array Antenna (BAA) is one of the efficient methods used for this purpose. Full band BAA, on the other hand, will suffer from a large number of controllable elements, a long convergence time and the complexity of the beamforming network. Since no attempt had previously been made to use Partial Update (PU) for BAA, the main novelty and contribution of this paper was to use PU instead of full band adaptive algorithms. PU algorithms will connect to a subset of the array elements rather than all of them. As a result, a common number of working antennas for the system's entire cells can be reduced to achieve overall energy efficiency and high cost-effectiveness. In this paper, we propose a new architectural model that employs PU adaptive algorithms to control and minimize the number of phase shifters, thereby reducing the number of base station antennas. We will concentrate on PU LMS (Least Mean Square) algorithms such as sequential-LMS, M-max LMS, periodic-LMS, and stochastic-LMS. According to simulation results using a Uniform Linear Array (ULA) and three communications channels, the M-max-LMS, periodic LMS, and stochastic LMS algorithms perform similarly to the full band LMS algorithm in terms of square error, tracking weight coefficients, and estimation input signal, with a quick convergence time, low level of error signal at steady state and keeping null steering's interference-suppression capability intact.

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Section: Architecture Of the Proposed Modelmentioning

confidence: 99%

Beamforming Array Antenna Technique Based on Partial Update Adaptive Algorithms

A. Shubber,

M. Jamel,

K. Nahar

2023

Int. j. electr. comput. eng. syst. (Online)

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“…Secondly, reasonable suppression of the radiation side lobes should be performed along with planning of the multimode operation of arrays. In Alnaggar et al, 54 an analytical beamforming technique for UCA array synthesis using a reduced number of antenna elements has been introduced. The motivation has been to minimize the complexity of the feeding network in static antenna arrays, whereas, in adaptive antenna arrays, to reduce the number of active components.…”

Section: Introductionmentioning

confidence: 99%

Optimized planar printed UCA configurations for OAM waves and the associated OAM mode content at the receiver

Ilić,

Vojnović,

Savić

et al. 2023

Int J Communication

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SummaryUtilization of planar printed uniform circular antenna arrays (UCA) to generate the orbital angular momentum (OAM) carrying waves in the millimeter‐wave (mmWave) frequency band is advantageous from the viewpoints of easy signal modulation and mode reconfiguration, low cost, low profile, and straightforward integration with the existing broadband wireless infrastructure. The OAM mmWave UCA are highly promising as the enablers of very high transmission data rates required by hybrid 5G/6G optical and wireless communication systems by complementing and enhancing other technologies currently in use. Therefore, we here contribute a detailed electromagnetic analysis of important constraints of such antenna arrangements aimed at short‐range multimode OAM wave transmission. We investigate (i) the required antenna array dimensions and optimized UCA arrangements for a particular link range and (ii) the corresponding mode structure of OAM waves in the plane of receiving arrays. Four relatively simple antenna configurations operating in the 60‐GHz band are compared. Theoretical assumptions based on ideal OAM modes are critically assessed and, using state‐of‐the‐art numerical electromagnetic analysis, compared to realistically generated OAM waves. The proposed “cyclic transmission setup” resulted in much lower unwanted field components in the region of receiving arrays. RMS magnitudes of unwanted modes are on average about 64% of the received mode, in comparison with 80% (up to 94%) for sequential transmission. The observed mode impurities and mode mixing effects at the receiver indicate the need to dedicate more attention to the system‐level design, the development of efficient receiving arrays, the MIMO processing, and the stream separation.

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Synthesis of concentric circular antenna array for reducing the sidelobe level by employing sine cosine optimization algorithm

Thadikamalla,

Amara

2024

Int J Numerical Modelling

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The sine cosine algorithm (SCA), a meta‐heuristic optimization method, is used in this study to provide a precise linear and elliptical antenna array design for synthesizing the ideal far‐field radiation pattern in the fifth‐generation (5G) communication spectrum. The wireless communication system will undergo dramatic changes thanks to the forthcoming 5G technology, which offers exceptionally high data rates, increased capacity, reduced latency, and outstanding service quality. The most important component of 5G communications is an accurate antenna array design for an optimum far‐field radiation pattern synthesis with a suppressed sidelobe level (SLL) value and half power beam width (HPBW). While long‐distance communication necessitates a low HPBW, the entire side lobe area needs a suppressed SLL to prevent interference. The SCA is used in this case to the optimal feeding currents applied to each array member in the design examples of the concentric circular antenna arrays (CCAA) discussed in this article. It shows the litheness and attainment of the propound algorithm named SCA, chosen CCAAs with three rings and varying amounts of components or antenna array sets those are stated as follows: Set I (4, 6, 8 elements), Set II (8, 10, 12 elements), Set III (6, 12, 18 elements), Set IV (8, 14, 20 elements) with and without the center element are amalgamate. Apply the PSO, Jaya, and SCA optimization algorithms for all four Sets of antenna arrays and compare the attained results; the SLL values achieved by the SCA technique are contrasted with those of other current optimization techniques. The outcomes of all examinations reveal that the SCA algorithm achieved a superior SLL reduction over other optimization techniques.

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A New Beamforming Technique for the Synthesis of Uniform Circular Antenna Arrays Using Reduced Number of Antenna Elements

Cited by 6 publications

References 33 publications

Beamforming Array Antenna Technique Based on Partial Update Adaptive Algorithms

Beamforming Array Antenna Technique Based on Partial Update Adaptive Algorithms

Optimized planar printed UCA configurations for OAM waves and the associated OAM mode content at the receiver

Synthesis of concentric circular antenna array for reducing the sidelobe level by employing sine cosine optimization algorithm

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