Array-antenna decoupling surfaces for quasi-yagi antenna arrays

Wei, Changning; Wu, Ke-Li

doi:10.1109/apusncursinrsm.2017.8073094

Cited by 10 publications

(3 citation statements)

References 4 publications

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“…Increasing the isolation between closely placed antennas has always been a challenge for researchers [20][21][22][23][24][25][26][27][28][29][30]. In this study, for improving the port isolation of the proposed DPA, a wideband decoupling structure is proposed.…”

Section: Isolation Improvement and Discussionmentioning

confidence: 99%

Broadband dual‐polarised antenna with wideband decoupling structure for polarisation diversity wireless communication application

Xun

Shi

Liu

et al. 2019

IET Microwaves, Antennas & Propagation

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A broadband dual‐polarised antenna with wideband decoupling structure is presented. By using the improved dipole, the proposed antenna achieves a common impedance bandwidth of 62% ranging from 1.645 to 3.13 GHz with standing a wave ratio <1.5. For improving the port isolations of the prototype, wideband isolation enhance technique is proposed. By using this technique, an average port isolation enhancement of 6 dB is realised within a wider bandwidth than 1 GHz. The bandwidth extension and decoupling mechanism are discussed. Moreover, the radiation patterns, gain and total radiation efficiency of the proposed antenna are also studied and presented. Experimental results demonstrate that the antenna has many advantages such as high gain (8.5 ± 0.7dBi), good radiation efficiency (>90.9%) and high cross polarisation discrimination. It is very suitable for polarisation diversity wireless communication application.

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Section: Isolation Improvement and Discussionmentioning

confidence: 99%

Broadband dual‐polarised antenna with wideband decoupling structure for polarisation diversity wireless communication application

Xun

Shi

Liu

et al. 2019

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

show abstract

“…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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“…However, due to the change of medium parameters, the matching of the microstrip antenna becomes worse. In [10,11], the array-antenna decoupling surface (ADS) is proposed and applied to the antenna arrays with isolation enhancement. The ADS has the advantage that maintains the matching conditions of the original antenna, increasing the radiation gain and process conveniently.…”

Section: Introductionmentioning

confidence: 99%

Isolation Enhancement Using a Novel Array-Antenna Decoupling Surface for Microstrip Antennas

Niu¹,

Hou²,

Chen³

et al. 2018

PIER M

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A novel array-antenna decoupling surface (ADS) for mutual coupling reduction in microstrip patch antenna is proposed in this paper. The proposed ADS is composed of a group of primary reflector patches and a pair of rectangular and T-shaped secondary reflector patches. Through generating the reflected waves with equal magnitude but out of phase of the coupling waves, the isolation of the antenna elements could be significantly improved by the novel proposed ADS. Then, for verification, a two-element microstrip antenna array covered by the proposed ADS with an edge-to-edge separation of 0.11λ 0 (λ 0 is the wavelength of the operating frequency in free space) was designed and fabricated. As expected, the experimental results have demonstrated that an additional 40.4 dB isolation enhancement at the resonant frequency was achieved by the proposed ADS. Moreover, a much wider bandwidth of the isolation was also obtained than that of return loss of 10 dB. In addition, a gain improvement of 0.95 dB was achieved at 2.45 GHz by utilizing the novel ADS. Thus, the decoupling structure can be applied to multiple-input multiple-output (MIMO) systems for its simple structure and high isolation providing.

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Array-antenna decoupling surfaces for quasi-yagi antenna arrays

Cited by 10 publications

References 4 publications

Broadband dual‐polarised antenna with wideband decoupling structure for polarisation diversity wireless communication application

Broadband dual‐polarised antenna with wideband decoupling structure for polarisation diversity wireless communication application

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

Isolation Enhancement Using a Novel Array-Antenna Decoupling Surface for Microstrip Antennas

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