A Measurement System for the Position and Phase Errors of the Elements in an Antenna Array Subject to Mutual Coupling

Lindgren, Tore; Borg, J.

doi:10.1155/2012/526121

Cited by 5 publications

(2 citation statements)

References 16 publications

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“…ese errors may cause the antenna gain to decrease, the sidelobe level to increase, the beam width to expand, the radiation efficiency to decrease, and even affect the antenna's beam pointing, which largely determines the performance of active phased array radar [30]. e errors mentioned above are all random errors, which cannot be eliminated due to their contingency and unpredictability, and the performance of all large antenna arrays is affected by random errors such as element position and amplitude and phase changes [31].…”

Section: Error Modeling Theorymentioning

confidence: 99%

Research on Quantization Error Influence of Millimeter-Wave Phased Array Antenna

Yang

Zhu

Xia

et al. 2021

International Journal of Antennas and Propagation

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The millimeter-wave phased array antenna is a higher integration system that is composed of different subarray modules, and in actual engineering, the existing amplitude, phase errors, and structural errors will change the performance of the array antenna. This paper studies the influence of the random amplitude and phase errors of the antenna array in the actual assembly process and the actual position errors between the subarrays on the electrical performance of the antenna. Based on the planar rectangular antenna array-electromagnetic coupling model, we propose a method of verifying the effect of random errors on the phased array antenna. The simulation result shows that the method could obtain the critical value of the error generated by the antenna subarray during processing and assembly. To reduce the error factor, it is necessary to ensure that the random phase and amplitude error should not exceed 10 ° , 0.5 dB . The error in the X-direction during assembly should be ≤ 0.05 λ , and the error in the Y-direction should be ≤ 0.1 λ . When symmetrical deformation occurs, the maximum deformation should be less than 0.05 λ .

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Section: Error Modeling Theorymentioning

confidence: 99%

Research on Quantization Error Influence of Millimeter-Wave Phased Array Antenna

Yang

Zhu

Xia

et al. 2021

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

show abstract

“…In [13,14], uncertainties in the phase errors were studied based on the IA methods. Limited-time experiments were conducted in [15,16] to study the effect of mechanical errors of elements on antenna performance. However, most of them can only obtain a rough interval of the antenna performance.…”

Section: Introductionmentioning

confidence: 99%

Gain prediction and compensation for subarray antenna with assembling errors based on improved XGBoost and transfer learning

Guo

Liu

et al. 2020

IET Microwaves, Antennas & Propagation

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Large array antennas are often assembled with several subarrays, and assembling errors containing position and orientation are the key factors determining the final radiation pattern. As an important feature of radiation patterns, the antenna gain significantly influences the design of the antenna. However, little research has been conducted on the accurate prediction and detailed compensation of gain with assembling errors. In this work, the authors propose an accurate gain prediction model using an improved extreme gradient boosting (XGBoost) algorithm and the transfer learning method. Knowledge from both the simulation data and experience is converted to weights to help train the improved XGBoost model. Experimental data are then used to modify the model for complex factors, such as mutual coupling and element type. Compensation methods are proposed to provide directions to limit the degradation of the gain within a range by controlling the assembling errors. Experiments are conducted on a platform with a 3 × 3 subarray antenna. The results indicate that the proposed gain prediction model is more accurate than the model developed using artificial neural network, support vector regression, and existing XGBoost algorithms. The steps of gain compensation are also reduced with the proposed compensation methods.

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An X-Band Coupled Lined Based Channel Failure Detection Mechanism For Active Phased Arrays

Anjum

Ali

Hussain

et al. 2021

2021 International Congress of Advanced Technology and Engineering (ICOTEN)

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A Measurement System for the Position and Phase Errors of the Elements in an Antenna Array Subject to Mutual Coupling

Cited by 5 publications

References 16 publications

Research on Quantization Error Influence of Millimeter-Wave Phased Array Antenna

Research on Quantization Error Influence of Millimeter-Wave Phased Array Antenna

Gain prediction and compensation for subarray antenna with assembling errors based on improved XGBoost and transfer learning

An X-Band Coupled Lined Based Channel Failure Detection Mechanism For Active Phased Arrays

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