A Compensation Method for Deformed Array Antennas Considering Mutual Coupling Effect

Lou, Shunxi; Wang, Wei; Bao, Hong; Hu, Naigang; Ge, Guang-Ding; Hu, Xiangtao; Qian, Sihao; Ge, Chaoliu

doi:10.1109/lawp.2018.2869168

Cited by 16 publications

(8 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Mutual coupling is a common problem in the applications of antenna arrays [35]- [39]- [40]. It significantly affects the operation of almost all types of antenna arrays.…”

Section: A Mutual Coupling In Antenna Arraysmentioning

confidence: 99%

Taguchi-RBF Neural networks Based Optimization of Phased Array Antenna With Coupling Effects

Oureghi

Ghayoula

Amara

et al. 2023

AEM

View full text Add to dashboard Cite

In the antenna array synthesis problems, most of the works in literature utilize isotropic elements. Thus, the mutual coupling effects between the array elements are neglected. It is obvious that an array antenna synthesized by neglecting the coupling effects cannot be used in the real world applications due to the possible mismatch between the desired and realized radiation patterns. In this paper, a novel method based on neural network algorithm RBF (Radial Basis Function ) for the synthesis and model of Antipodal Vivaldi antenna with mutual coupling effect is presented. The synthesis in implementation’s method for this type of array permits to approach the appropriated radiation pattern while considering the mutual coupling between its elements. The neural network is used to estimate the array elements’ excitations. The architecture of the neural network based on the radial basis functions (RBFs) is introduced and simulation results are presented. Results show that there is an agreement between the desired specifications and the synthesized one. The proposed optimization approach offers an efficient and robust synthesis procedure.

show abstract

“…Mutual coupling is a common problem in the applications of antenna arrays [35]- [39]- [40]. It significantly affects the operation of almost all types of antenna arrays.…”

Section: A Mutual Coupling In Antenna Arraysmentioning

confidence: 99%

Taguchi-RBF Neural networks Based Optimization of Phased Array Antenna With Coupling Effects

Oureghi

Ghayoula

Amara

et al. 2023

AEM

View full text Add to dashboard Cite

show abstract

“…Meanwhile, with the development of APAA towards high performance, high frequency band, and high integration, it turns out to be a closer coupling relationship between structure design, device thermal power consumption, and electromagnetic performance. Multi-feld structural-electromagnetic-thermal coupling has become one of the key problems restricting the development of APAR [8][9][10][11][12].…”

Section: Introductionmentioning

confidence: 99%

Structural-Electromagnetic-Thermal Coupling Technology for Active Phased Array Antenna

Wang

et al. 2023

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

Active phased array antenna (APAA) is a representative of complex electronic equipment, and it plays significant roles in scenarios such as battlefield situation perception, aviation guidance, and communication. It has become the core equipment in land, navigation, and aeronautical applications. With the continuous improvement of technical changes and military requirements, the working frequency band, pointing accuracy, gain, and low sidelobe level of APAA increase, and the multi-disciplinary design contradiction between antenna electrical performance and structure and temperature becomes increasingly prominent. As a result, the electrical performance of APAA in service is prone to be affected by the external complex environments. The structural-electromagnetic-thermal (SET) coupling problem has become a key problem restricting the development of APAA. This paper has summarized the structural features and environmental loads of advanced APAA on different platforms and provided design basis and principle for antenna designer. And then the SET coupling theory of APAA has been introduced, which can be applied in both the design and manufacturing stage, as well as the performance control technology in service environment of APAA. This theory helps to analyze the impact of environmental factors, such as antenna structure deformation, radome high-temperature ablation, and feed errors, on the antenna's performance. For 128 × 768 spaceborne array antenna, in the range of 25∼85°C, the gain of antenna decreases with the increase of operating temperature and decreases by 0.015 dB with each increase of 1°C. The key design parameters in the fields of antenna manufacturing accuracy, efficient heat dissipation, and lightweight design are also analysed; for 32 × 32 rectangular planar phased array antenna, the gain of antenna decreases by 2.715 dB when the random error of installation position in x, y, and z direction reaches 1/10 of the wavelength. In addition, condition monitoring, displacement field reconstruction, and electrical performance compensation of APAA have also been touched to help engineers maintain and guarantee the antenna performance throughout its life cycle. Finally, the future research direction of SET technology of APAA has been discussed, and SET technology is extended to more fields such as antenna parameter uncertainty, high-frequency circuit electronics manufacturing, and electronic equipment performance guarantee.

show abstract

“…In Reference 27, a pattern synthesizing technique based on Least Square Method (LSM) algorithm is developed to form the desired field pattern for Equally Spaced Linear Array (ESLA). A compensation technique 28 and iterative weight‐correction method 29 based on Constraint Least‐Squares Optimization are used to recompensate the mutual coupling effects and to control the side lobe level for phase correction of conformal arrays. In Reference 30, a novel approach using Hybrid Spatial Distance Reduction Algorithm (HSDRA) with particular null's placement, is used for radiation pattern correction in 4 × 4 spherical‐shaped conformal antenna array.…”

Section: Introductionmentioning

confidence: 99%

Radiation pattern synthesis in conformal antenna arrays using modified convex optimization technique

Khan

Khattak

Asif

et al. 2022

Int J RF Mic Comp-Aid Eng

View full text Add to dashboard Cite

In this paper, a modified convex optimization technique is used for radiation pattern correction in a cylindrical-shaped conformal microstrip array antenna.The technique uses numerical simulations to optimize the amplitude and phase excitations, with the goal to decrease the Euclidean distance between the desired field pattern and the obtained (simulated/measured) field pattern while maintaining the main beam direction, null's location, and side lobe levels under control. Two prototypes of 1 Â 4 and 2 Â 4 conformal microstrip antenna array deformed from linear/planar structure to the prescribed cylindrical shape, with different radii of curvature, are studied to demonstrate the performance of the proposed technique. The proposed convex optimization model when applied to conformal antenna array possesses fast computing speed and high convergence accuracy for radiation pattern synthesis, which can be a valuable tool for engineering applications.

show abstract

A Compensation Method for Deformed Array Antennas Considering Mutual Coupling Effect

Cited by 16 publications

References 14 publications

Taguchi-RBF Neural networks Based Optimization of Phased Array Antenna With Coupling Effects

Taguchi-RBF Neural networks Based Optimization of Phased Array Antenna With Coupling Effects

Structural-Electromagnetic-Thermal Coupling Technology for Active Phased Array Antenna

Radiation pattern synthesis in conformal antenna arrays using modified convex optimization technique

Contact Info

Product

Resources

About