scholarly journals A PARETO ELITE SELECTION GENETIC ALGORITHM FOR RANDOM ANTENNA ARRAY BEAMFORMING WITH LOW SIDELOBE LEVEL

2013 ◽  
Vol 51 ◽  
pp. 407-425 ◽  
Author(s):  
Suhanya Jayaprakasam ◽  
Sharul Kamal Bin Abd Rahim ◽  
Chee Yen Leow
Keyword(s):  
Genetic Algorithm ◽  
Antenna Array ◽  
Sidelobe Level ◽  
Low Sidelobe ◽  
Array Beamforming ◽  
Elite Selection

SYNTHESIS OF UNIFORM LINEAR ANTENNA ARRAY USING GENETIC ALGORITHM WITH COST BASED ROULETTE TO MAXIMIZE SIDELOBE LEVEL REDUCTION

2011 ◽  
Vol 08 (02) ◽  
pp. 171-179
Author(s):  
T. S. JEYALI LASEETHA ◽  
R. SUKANESH
Keyword(s):  
Genetic Algorithm ◽  
Antenna Array ◽  
Radiation Pattern ◽  
Optimization Method ◽  
Adaptive Beamforming ◽  
Linear Antenna ◽  
Algorithm Optimization ◽  
Sidelobe Level ◽  
Linear Antenna Array ◽  
Sidelobe Level Reduction

This paper discusses the deployment of Genetic Algorithm optimization method for the synthesis of antenna array radiation pattern in adaptive beamforming. The synthesis problem discussed is to find the weights of the Uniform Linear Antenna array elements that are optimum to provide the radiation pattern with maximum reduction in the sidelobe level. This technique proved its effectiveness in improving the performance of the antenna array.

Ka-band SIW Slot Antenna Array with Low Sidelobe Level

2021 ◽  
Author(s):  
Tongyu Ding ◽  
Mengyu Wang ◽  
Jie Guo ◽  
Jun Xiao ◽  
Qiubo Ye
Keyword(s):  
Antenna Array ◽  
Slot Antenna ◽  
Sidelobe Level ◽  
Ka Band ◽  
Low Sidelobe

SERIES FEED FAN-BEAM ANTENNA ARRAY WITH A LOW SIDELOBE LEVEL FOR POSITIONING SYSTEM

2020 ◽  
pp. 55-65
Author(s):  
Le Minh Thuy
Keyword(s):  
Antenna Array ◽  
Radiation Pattern ◽  
Amplitude Distribution ◽  
High Gain ◽  
Impedance Bandwidth ◽  
Antenna Element ◽  
Positioning System ◽  
Sidelobe Level ◽  
Single Antenna ◽  
Low Sidelobe

In this paper, a novel antenna array at 5GHz is presented with a low sidelobe level and wide impedance bandwidth for indoor positioning applications . The antenna array has the size of 450 ×57×0.8 mm3 with the high gain of 14.5dBi and the low SLL of -18 dB at 5GHz. The series feed using Unequal Split T-Junction is proposed with the Chebyshev-amplitude distribution to improve SLL. Besides the 1800 phase and amplitude distribution, by deploying driven elements above each single antenna element, the radiation pattern and the gain of the antenna aray are significantly improved.

Performance Analysis of Linearly arranged Concentric Circular Antenna Array with Low Sidelobe Level and Beamwidth Using Robust Tapering Technique.

2021 ◽  
Author(s):  
Imteaz Rahaman ◽  
Md. Farhamdur Reza ◽  
Md. Selim Hossain ◽  
Pallab Kumar Sarkar ◽  
Md. Mamunur Rashid ◽  
...  
Keyword(s):  
Antenna Array ◽  
Conventional Technique ◽  
Sidelobe Level ◽  
Diagonal Loading ◽  
Direction Error ◽  
Low Sidelobe ◽  
Robust Techniques ◽  
False Signal ◽  
Concentric Circular Antenna Array ◽  
Circular Antenna Array

Abstract In this research, a novel antenna array named Linearly arranged Concentric Circular Antenna Array (LCCAA) is proposed concerning lower beamwidth, lower sidelobe level, sharp ability to detect the false signal, and impressive SINR performance. The performance of the proposed LCCAA beamformer is compared with geometrically identical existing beamformers using the conventional technique where the LCCAA beamformer shows the lowest beamwidth and sidelobe level(SLL) of 12.50°and -15.17 dB in equal element accordingly. However, the performance gets degraded due to looking direction error, and robust techniques- fixed diagonal loading (FDL), optimal diagonal loading (ODL), and variable diagonal loading (VDL) are applied to all the potential arrays to minimize this problem. Furthermore, the LCCAA beamformer is further simulated to reduce the sidelobe applying tapering techniques where the hamming window shows the best performance having 17.097 dB less sidelobe level compared to the uniform window. The proposed structure is also analyzed under a robust tapered (VDL-hamming) method which reduces around 69.92 dB and 48.39 dB more sidelobe level compared to conventional and robust techniques. Analyzing all the performances, it is clear that the proposed LCCAA beamformer is superior and provides the best performance with the proposed robust tapered (VDL-hamming) technique.

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