A Multi-Level Optimization Method Using PSO for the Optimal Design of an L-Shaped Folded Monopole Antenna Array

Nguyen, Tuan Hung; Morishita, Hisashi; Koyanagi, Yoshio; Izui, Kazuhiro; Nishiwaki, Shinji

doi:10.1109/tap.2013.2288785

Cited by 29 publications

(9 citation statements)

References 27 publications

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“…Using the particle swarm optimization (PSO) procedure [40], the parameters of the proposed MA can be optimized to generate different absorption effects. As shown in figure 2, the optimized bilayer cross-shaped MA demonstrates resonance points at 3.05 GHz (S-band), 5.996 GHz (C-band), 9.89 GHz (X-band), 15…”

Section: Unit Cell Design Of the Flexible Mamentioning

confidence: 99%

A flexible metamaterial absorber with temperature-insensitive design at microwave frequencies

Li,

Lu,

et al. 2023

Smart Mater. Struct.

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Developing a metamaterial absorber (MA) with both flexibility and temperature insensitivity continues to be a challenge in the field of radar stealth. In this paper, we propose a compensation method for designing flexible and temperature-insensitive MA. This method is revealed through the relationship between the square resistance of the resistive film, the permittivity of the substrate, and the temperature. Importantly, the compensation method is applicable to both the MA in the plane state and the bending state. By utilizing the benefits of the compensation mechanism and the flexible designability of the bilayer cross-shaped structure, the flexible MA proposed in this paper can achieve temperature-insensitive absorption across a broad frequency range. Experimental results indicate that the absorption peaks achieve an absorptivity greater than 90% within the frequency of 7.2–9.4 GHz, exhibiting excellent temperature stability from 25 °C to 300 °C. In comparison to previous studies on flexible MAs, this design offers a distinct advantage in high-temperature environments and provides valuable guidelines for the design of integrated multi-functional absorbers in practical applications.

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Section: Unit Cell Design Of the Flexible Mamentioning

confidence: 99%

A flexible metamaterial absorber with temperature-insensitive design at microwave frequencies

Li,

Lu,

et al. 2023

Smart Mater. Struct.

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“…Due to the ability to perform multiple functions in a limited space, multifunctional antenna arrays are widely used in modern wireless systems for communication, detection, positioning and remote sensing [1], [2], [3], [4]. The strategy of interleaving multiple aperiodic subarrays on a shared aperture provides a new approach for realizing multifunction in antenna systems.…”

Section: Introductionmentioning

confidence: 99%

Interleaved concentric rings array based on subarray element excitation-matching

Li,

Gu,

et al. 2023

Third International Conference on Signal Image Processing and Communication (ICSIPC 2023)

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Interleaved antenna arrays are widely used in radar tracking, navigation, wireless communications, and location, etc. In order to make use of a given antenna aperture of concentric rings array (CRA) efficiently, an interleaved method for interlacing uniform CRA is proposed in this paper based on Subarray element Excitation-Matching (SEM). Due to Fourier-Bessel transform mapping between array factor and uniform CRA antenna excitation, in our method, the array factor of CRA is first calculated and its sidelobe region is then amended accordingly to meet user-defined sidelobe level threshold. In the next steps, the updated antenna element excitation coefficients are acquired with 2-D fast Fourier transform (FFT) and cubic interpolation method. Finally, with a careful exploration of the excitation distributions, the antenna positions of thinned subarrays are deliberately chosen in an alternating manner, which ensures that a similar pattern can be achieved with different thinned subarrays. The performance of the proposed interleaved CRA design method is evaluated by numerical simulation.

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“…For situations where a fixed IASR array is required to be expanded for better performances, the natural problem is how to properly arrange additional antenna elements involving tradeoffs among interested factors of merit. Although many researches on multiobjective array design have been conducted to fulfill specific requirements [17]- [20], these works mainly focus on the synthesis of phased arrays different from the interferometric arrays addressed in our work. The second aspect is that stateof-the-art design methods (including MOPSO, NSGA-II, and NNIA) have been implemented and compared on this design problem as a benchmark.…”

Section: Introductionmentioning

confidence: 99%

Expansion Design of Interferometric Aperture Synthesis Arrays Based on Multi-Objective Optimization

Zhu

Peng

2019

IEEE Access

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This paper presents a study on expansion design of thinned arrays in interferometric aperture synthesis radiometers. The design problem deals with how to properly employ a limited number of antenna elements around a fixed array to fulfill performance requirements of interest, such as angular resolution, peak sidelobe level, and array redundancy. These factors of merit are grouped and discussed within the framework of multi-objective design. Three state-of-the-art optimizers based on multi-objective particle swarm optimization, non-dominated sorting genetic algorithm II, and non-dominated neighbor immune algorithm are implemented for specific design examples. A comparative analysis is performed to point out the features and performances of the above-mentioned search methods. INDEX TERMS Expansion design, interferometric aperture synthesis (IAS), multi-objective optimization, thinned interferometric arrays.

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A Multi-Level Optimization Method Using PSO for the Optimal Design of an L-Shaped Folded Monopole Antenna Array

Cited by 29 publications

References 27 publications

A flexible metamaterial absorber with temperature-insensitive design at microwave frequencies

A flexible metamaterial absorber with temperature-insensitive design at microwave frequencies

Interleaved concentric rings array based on subarray element excitation-matching

Expansion Design of Interferometric Aperture Synthesis Arrays Based on Multi-Objective Optimization

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