Array pattern synthesis with null field constraints in the near-field region

2002 ◽  
Author(s):  
O.M. Bucci ◽  
F. D'Agostino ◽  
C. Gennarelli ◽  
G. Riccio ◽  
C. Savarese
Keyword(s):  
Near Field ◽  
Field Region ◽  
Pattern Synthesis ◽  
Null Field ◽  
Array Pattern

scholarly journals Experimental observation of asymmetrical microwave jets and far-field distribution generated by a dual-material system

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
B. Varghese ◽  
O. Shramkova ◽  
P. Minard ◽  
L. Blondé ◽  
V. Drazic ◽  
...  
Keyword(s):  
Near Field ◽  
Microwave Frequency ◽  
Far Field ◽  
Material System ◽  
Field Region ◽  
Edge Diffraction ◽  
Jet Behavior ◽  
Electric Field Profile ◽  
Dual Material ◽  
Plane Wave Diffraction

AbstractIn this paper, we report the experimental and numerical investigation of plane wave diffraction by an all-dielectric dual-material cuboid. Edge diffraction by a cuboid leads to the generation of a narrow, high intensity beam in the near-field region called a photonic jet. We examine the dependence of the jet behavior and orientation on the materials and dimensions of constitutive parts in the microwave frequency domain. The possibility to shift and deviate the resultant microwave jet in the near-field region of such a structure depending on the size of constitutive parts is demonstrated numerically. Experimentally, we observe a shift in the spatial position of the jet. The experimental asymmetric electric field profile observed in the far-field region is attributed to the input of multiple edge waves generated by the dual-material cuboid. The presented results may be scaled at different frequency bands such as optical frequencies for designing nanostructures enabling the focusing and deviation functionality and creation of new optical devices which would satisfy the needs of emerging nanophotonic applications.

Optimal array pattern synthesis for broadband arrays

2007 ◽  
Vol 122 (5) ◽  
pp. 2686 ◽  
Author(s):  
Shefeng Yan ◽  
Yuanliang Ma ◽  
Chaohuan Hou
Keyword(s):  
Pattern Synthesis ◽  
Array Pattern
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