Constructing Bernstein-Bezier triangular interpolating curve surface interpolating a series of arbitrary disordered data points is of considerable importance for the design and modeling of surfaces with a variety of c...Constructing Bernstein-Bezier triangular interpolating curve surface interpolating a series of arbitrary disordered data points is of considerable importance for the design and modeling of surfaces with a variety of continuity information. In this article. a kind of simple and reliable algorithm that can process complex field triangular grid generating is presented, and a group of formulae for determining triangular curved surface with wholly C1 continuity are given. It can process arbitrary non-convex boundary and can be used to construct surfaces inner holes.展开更多
A novel artificial magnetic conductor（AMC） metasurface is proposed with ultra-wideband 180？phase difference for radar cross section（RCS） reduction. It is composed of two dual-resonant AMC cells, which enable a br...A novel artificial magnetic conductor（AMC） metasurface is proposed with ultra-wideband 180？phase difference for radar cross section（RCS） reduction. It is composed of two dual-resonant AMC cells, which enable a broadband phase difference of 180°±30°from 7.9 GHz to 19.2 GHz to be achieved. A novel strategy is devised by dividing each rectangular grid in a chessboard configuration into four triangular grids, leading to a further reduction of peak bistatic RCS. Both fullwave simulation and measurement results show that the proposed metasurface presents a good RCS reduction property over an ultra-wideband frequency range.展开更多
文摘Constructing Bernstein-Bezier triangular interpolating curve surface interpolating a series of arbitrary disordered data points is of considerable importance for the design and modeling of surfaces with a variety of continuity information. In this article. a kind of simple and reliable algorithm that can process complex field triangular grid generating is presented, and a group of formulae for determining triangular curved surface with wholly C1 continuity are given. It can process arbitrary non-convex boundary and can be used to construct surfaces inner holes.
基金Project supported by the National Natural Science Foundation of China(Grant Nos.61372034 and 61501499)
文摘A novel artificial magnetic conductor（AMC） metasurface is proposed with ultra-wideband 180？phase difference for radar cross section（RCS） reduction. It is composed of two dual-resonant AMC cells, which enable a broadband phase difference of 180°±30°from 7.9 GHz to 19.2 GHz to be achieved. A novel strategy is devised by dividing each rectangular grid in a chessboard configuration into four triangular grids, leading to a further reduction of peak bistatic RCS. Both fullwave simulation and measurement results show that the proposed metasurface presents a good RCS reduction property over an ultra-wideband frequency range.
