scholarly journals A Hybrid Tolerance Design Method for the Active Phased-Array Antenna

2020 ◽  
Vol 10 (4) ◽  
pp. 1435 ◽  
Author(s):  
Guodong Sa ◽  
Zhenyu Liu ◽  
Chan Qiu ◽  
Jianrong Tan
Keyword(s):  
Design Method ◽  
Array Antenna ◽  
Tolerance Design ◽  
Geometric Errors ◽  
Discrete Elements ◽  
Phased Array Antenna ◽  
Form Errors ◽  
Position Errors ◽  
Working Frequency ◽  
Effectiveness And Efficiency

With the increase of the working frequency of the array antenna, tolerance design has become increasingly important. The state-of-art tolerance design methods mainly deal with the position tolerance of the discrete elements. However, the geometric errors of the whole array have resulted from two aspects: (1) the position errors of the discrete elements and (2) the form errors of the continuous reflection plate. To optimize the position tolerance and flatness simultaneously, a hybrid tolerance design method is proposed. First, the relation between the performance of the array antenna and hybrid tolerances was determined based on the second order Taylor expansion. Then the expectation and variance of the performance were derived. Finally, the hybrid tolerances were optimized and the performance of the antenna was improved. Simulation results proved the effectiveness and efficiency of the proposed hybrid tolerance design method.

A Novel Region-Division-Based Tolerance Design Method for a Large Number of Discrete Elements Distributed on a Large Surface

2019 ◽  
Vol 141 (4) ◽  
Author(s):  
Guodong Sa ◽  
Zhenyu Liu ◽  
Chan Qiu ◽  
Jianrong Tan
Keyword(s):  
Phased Array ◽  
Design Method ◽  
Geometric Error ◽  
Product Performance ◽  
Tolerance Design ◽  
Geometric Errors ◽  
Discrete Elements ◽  
Sensitivity Matrix ◽  
Region Division ◽  
Main Components

The array structure is widely used in precise electronic products such as large phased array antennas and large optical telescopes, the main components of which are a large surface base and a large number of high-precision discrete elements mounted on the surface base. The geometric error of discrete elements is inevitable in the manufacturing process and will seriously degrade the product performance. To deal with the tolerance design of discrete elements, a region-division-based tolerance design method is proposed in this paper. The whole array was divided into several regions by our method and the tolerance of discrete elements was correlated with the region importance on the performance. The method specifically includes the following steps: first, the sensitivity of the product performance to geometric errors was analyzed and the statistical relationship between the performance and geometric errors was established. Then, based on the sensitivity matrix, the regional division scheme was developed, and the corresponding tolerance was optimized according to the established relationship function. Finally, the optimal tolerance was selected among the multiple solutions to achieve the best performance. Taking a large phased array as an example, a simulation experiment was performed to verify the effectiveness of the proposed method.

Research on the Conformal Phased-Array Antenna

2014 ◽  
Vol 685 ◽  
pp. 324-327
Author(s):  
Shuang Zhao ◽  
Yu Bo Yue
Keyword(s):  
Mathematical Model ◽  
Antenna Array ◽  
Phased Array ◽  
Design Method ◽  
Array Antenna ◽  
Phased Array Antenna ◽  
Conformal Antenna ◽  
Conformal Array ◽  
Design Requirements ◽  
The Mathematical Model

The mathematical model of conformal antenna array is the premise and basis of the conformal array antenna signal processing. Based on the analysis of the antenna array, a design method for adjusting the direction of the conformal array antenna is proposed. Through simulation, the pattern of antenna meets the actual needs of the project and it reaches pre design requirements.

scholarly journals Tolerance Modeling and Analysis Considering Form Defects for Spaceborne Array Antenna

2020 ◽  
Vol 10 (8) ◽  
pp. 2840
Author(s):  
Guodong Sa ◽  
Zhenyu Liu ◽  
Chan Qiu ◽  
Jianrong Tan
Keyword(s):  
Tolerance Analysis ◽  
Simulation Method ◽  
Geometric Error ◽  
Array Antenna ◽  
Analysis Method ◽  
Phased Array Antenna ◽  
Modeling And Analysis ◽  
Form Errors ◽  
Assembly Simulation ◽  
Tolerance Modeling

Tolerance analysis is becoming increasingly important for tolerance design and optimization. When dealing with electromechanical products such as the array antenna, the form errors of the assembly must be considered. Traditional tolerance analysis with form errors relies on a double loop process, which is computationally expensive. A new tolerance analysis method is proposed in this paper, which can be achieved by a single loop process. First, a new tolerance modeling method considering form errors was proposed, it can represent the geometric error of a surface feature precisely. Then an effective sampling method was developed by introducing the variance separation method. An assembly simulation method was proposed to determine the final state of the whole assembly. Finally, the tolerance analysis was achieved based on the sufficient sample. The proposed analysis method was applied to an X-band spaceborne active-phased array antenna, numerical simulation results show the effectiveness of the method.

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

2021 ◽  
Vol 2021 ◽  
pp. 1-19
Author(s):  
Haigen Yang ◽  
Linqun Zhu ◽  
Zhun Xia ◽  
Yanqing Chen ◽  
Luohao Dai ◽  
...  
Keyword(s):  
Antenna Array ◽  
Millimeter Wave ◽  
Phased Array ◽  
Electromagnetic Coupling ◽  
Random Phase ◽  
Array Antenna ◽  
Electrical Performance ◽  
Phased Array Antenna ◽  
Position Errors ◽  
Phase Errors

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 .

Application of TRIZ Contradiction Matrix in Equipment’s Combat Resilience Design

2014 ◽  
Vol 722 ◽  
pp. 149-153
Author(s):  
Sa Sa Ma ◽  
Shi Ying Yang ◽  
Ying Xin Xu ◽  
Chao Wei Zhang
Keyword(s):  
Design Theory ◽  
Phased Array ◽  
Design Method ◽  
Array Antenna ◽  
Theoretical Research ◽  
Phased Array Antenna ◽  
Analysis Problem ◽  
Design Efficiency ◽  
Improve Design ◽  
Chinese Military

Aiming at problems of lack of theoretical research and existing resources, etc., in equipment’s combat resilience design for the chinese military, a new kind of equipment’s combat resilience design theory-TRIZ contradiction maters are used to describe the technical conflict in practical problem, the conflict resolving matrix is used to analysis problem, and the principle to solve the contradiction is given at last. This theory is strongly to solve the contradiction problem. For these reasons, the equipment’s combat resilience design process is proposed in this paper, and then taking the battlefield maintenance of radar phased array antenna as an example, this paper analyses the improvement design method to introduce the design of phased array antenna by using the TRIZ conflict matrix. The results show that, TRIZ conflict matrix can effectively guide the equipment’s combat resilience design, and can indicate the direction for the equipment’s combat resilience design to improve design efficiency.

Phase Control and Calibration Characteristics of Optically Controlled Phased Array Antenna Feed Using Multiple SMFs

2011 ◽  
Vol E94-C (10) ◽  
pp. 1634-1640 ◽  
Author(s):  
Daiki TAKEUCHI ◽  
Wataru CHUJO ◽  
Shin-ichi YAMAMOTO ◽  
Yahei KOYAMADA
Keyword(s):  
Phased Array ◽  
Phase Control ◽  
Array Antenna ◽  
Antenna Feed ◽  
Phased Array Antenna
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