scholarly journals Analytical Phasing of Arbitrarily Oriented Arrays Using a Fast, Analytical Far-Field Calculation Method

2018 ◽  
Vol 66 (6) ◽  
pp. 2911-2922 ◽  
Author(s):  
Hossein Mehrpour Bernety ◽  
Suresh Venkatesh ◽  
David Schurig
Keyword(s):  
Calculation Method ◽  
Far Field ◽  
Field Calculation

scholarly journals Thinning and Weighting of Planar/Conformal Arrays Considering Mutual Coupling Effects

2016 ◽  
Vol 2016 ◽  
pp. 1-10 ◽  
Author(s):  
You-Feng Cheng ◽  
Wei Shao ◽  
Ran Zhang ◽  
Xiao Ding ◽  
Meng-Xia Yu
Keyword(s):  
Mutual Coupling ◽  
Differential Evolution Algorithm ◽  
Far Field ◽  
Field Calculation ◽  
Sidelobe Suppression ◽  
Sparse Arrays ◽  
Low Sidelobe ◽  
Key Points ◽  
Element Pattern ◽  
Synthesis Approach

Based on an improved active element pattern (AEP) technique, a novel effective method for sidelobe suppression considering mutual coupling (MC) in planar and conformal sparse arrays is proposed in this paper. A thinning and weighting process that includes the thinning module, optimization module, and far-field calculation module is presented, and three key points, namely, the modified AEP modeling, far-field calculation of planar and conformal thinned arrays, and modified thinning strategy, are highlighted. As an effective optimization algorithm, the differential evolution algorithm (DEA) is adopted in order to achieve low sidelobe. Several numerical examples are shown to validate the consistency and effectiveness of the proposed synthesis approach. With the first use of the AEP technique for the synthesis of sparse arrays, the planar and conformal microstrip arrays with the desired array filling factor are studied to obtain the expected sidelobe level (SLL).

A fast and flexible library-based thick-mask near-field calculation method

2015 ◽  
Author(s):  
Xu Ma ◽  
Jie Gao ◽  
Xuanbo Chen ◽  
Lisong Dong ◽  
Yanqiu Li
Keyword(s):  
Calculation Method ◽  
Near Field ◽  
Field Calculation

scholarly journals Synthetic electric field calculation method of three-coil structure to resist the seawater flow vibration

AIP Advances ◽  
2018 ◽  
Vol 8 (11) ◽  
pp. 115007
Author(s):  
Kehan Zhang ◽  
Xinyi Zhang ◽  
Haibing Wen ◽  
Zhengchao Yan ◽  
Baowei Song
Keyword(s):  
Electric Field ◽  
Calculation Method ◽  
Field Calculation ◽  
Coil Structure ◽  
Electric Field Calculation

The lift force on a spherical body in a rotational flow

1987 ◽  
Vol 183 ◽  
pp. 199-218 ◽  
Author(s):  
T. R. Auton
Keyword(s):  
Shear Flow ◽  
Lift Force ◽  
Spherical Body ◽  
Inviscid Fluid ◽  
Far Field ◽  
Rotational Flow ◽  
Field Calculation ◽  
Sphere Surface ◽  
Secondary Velocity

This paper concerns the flow about a sphere placed in a weak shear flow of an inviscid fluid. The secondary velocity resulting from advection of vorticity by the irrotational component of the flow is computed on the sphere surface, and on the upstream axis. The resulting lift force on the sphere is evaluated, and the result is confirmed by an analytical far-field calculation. The displacement of the stagnation streamline, far upstream of the sphere, is calculated more accurately than in previous papers.

Fast extreme ultraviolet lithography mask near-field calculation method based on machine learning

2020 ◽  
Vol 59 (9) ◽  
pp. 2829
Author(s):  
Jiaxin Lin ◽  
Lisong Dong ◽  
Taian Fan ◽  
Xu Ma ◽  
Rui Chen ◽  
...  
Keyword(s):  
Machine Learning ◽  
Calculation Method ◽  
Extreme Ultraviolet ◽  
Near Field ◽  
Field Calculation ◽  
Extreme Ultraviolet Lithography ◽  
Ultraviolet Lithography
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