Title :
Analysis of a grating metal structure with broad back-scattering field pattern for applications in vehicle collision avoidance system
Author :
Chou, Young-Huang ; Lin, Shew-Jon ; Chung, Shyh-Jong
Author_Institution :
Dept. of Commun. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
fDate :
1/1/2002 12:00:00 AM
Abstract :
In this paper, grating metal structures with broad and flat back-scattering field patterns are studied for possible applications in a vehicle collision avoidance system. The two-dimensional TE scattering of a planar grating structure and a curved grating structure are analyzed at a frequency of 77 GHz. For the planar structure, the method of moments and Floquet´s theorem are used to solve the induced current and the resultant back-scattering field. Based on the results of the planar structure, the scattering field of the curved grating structure is obtained by using a perturbation method. The influence on the field pattern of the curvature as well as other structure parameters, such as the width and geometry of each period in the grating structure, is investigated
Keywords :
backscatter; collision avoidance; electromagnetic induction; electromagnetic wave scattering; method of moments; periodic structures; perturbation techniques; radar theory; road vehicle radar; 77 GHz; Floquet´s theorem; broad back-scattering field pattern; curved grating structure; flat back-scattering field patterns; geometry; grating metal structure; induced current; method of moment; perturbation method; planar grating structure; structure parameters; two-dimensional TE scattering; vehicle collision avoidance system; width; Antenna arrays; Collision avoidance; Directive antennas; Frequency; Gratings; Pattern analysis; Phased arrays; Radar antennas; Radar scattering; Vehicles;
Journal_Title :
Vehicular Technology, IEEE Transactions on
