GaN Based Wide Band C-Band Active Phased Array Antenna Design with Wide Scan Volume

Kedar, Ashutosh; Bisht, Aarti; Sreenivasulu, K.; Rao, D. Srinivas; Vishwakarma, Naveen Kr.

doi:10.1109/radar42522.2020.9114841

Cited by 10 publications

(2 citation statements)

References 5 publications

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“…Te existing general commercial electromagnetic simulation and analysis software (HFSS [184], CST [185], and ADS [186]) has a huge workload in the early modelling process and needs to apply complex loads and constraints and set boundary conditions. Also, the solution process consumes a long time, which cannot meet the demand of rapid prediction of antenna electrical performance [187][188][189]. Since the electrical performance of APAA will deteriorate under the infuence of service environment load, it is necessary to adopt appropriate electrical compensation methods to improve the electrical performance of the antenna by compensating the amplitude and phase of the excitation current of the antenna element.…”

Section: Software Tool For Performance Compensation Of Apaamentioning

confidence: 99%

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

Wang

et al. 2023

International Journal of Antennas and Propagation

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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.

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Section: Software Tool For Performance Compensation Of Apaamentioning

confidence: 99%

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

Wang

et al. 2023

International Journal of Antennas and Propagation

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“…Furthermore, a strategic overhaul in the structural dynamics of the antenna array surface might be the cornerstone in harnessing its full potential. Such optimization strategies, tailored to endure high-power operational environments, would make these systems more versatile and adaptable to the ever-evolving complexities of contemporary battlefields [15][16][17]. Echoing this sentiment, it becomes clear that the ramifications of these studies aren't insular; they have the potential to invigorate technological progress across a spectrum of defence-related industries.…”

Section: Introductionmentioning

confidence: 99%

Structural Enhancement and Thermal Deformation Analysis of Antenna Arrays in Vehicle-Mounted Phased Array Radar: A Heat Dissipation Perspective

Meng,

Yang,

Zhou

et al. 2023

IJHT

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In the evolving landscape of modern warfare, an escalating importance is being attributed to vehicle-mounted phased array radars due to their imperative role in information acquisition and mastery. A significant limitation to their performance lies in the challenges of heat dissipation and resultant thermal deformation of the antenna array surface. Current methodologies for predicting thermal deformation and techniques for heat dissipation exhibit inherent shortcomings, rendering them inadequate for varying radar systems and diverse operational environments. To address this, heat transfer characteristics of microchannels on the antenna array surface of vehicle-mounted phased array radar were investigated. A novel design paradigm for the structural optimisation of the antenna array surface was subsequently proposed. In addition, a cutting-edge thermal deformation prediction method utilising a Particle Swarm Optimization (PSO)-Genetic Algorithm (GA)-Back Propagation Neural Network (BPNN) synergy was presented, aiming to overcome the deficiencies observed in existing prediction models. The insights garnered from this research offer potential pathways for the refinement of radar antenna array structures and are poised to pave the way for future advancements in this domain.

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Phased Array Antenna for Radar Application

Kedar¹

2022

Handbook of Metrology and Applications

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GaN Based Wide Band C-Band Active Phased Array Antenna Design with Wide Scan Volume

Cited by 10 publications

References 5 publications

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

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

Structural Enhancement and Thermal Deformation Analysis of Antenna Arrays in Vehicle-Mounted Phased Array Radar: A Heat Dissipation Perspective

Phased Array Antenna for Radar Application

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