Horn Antenna Aperture Field Based On Hamilton Architecture And Symplectic Algorithm

Horn antenna is a kind of aperture antenna widely used in microwave band. After ridged it becomes to UWB antenna, which is used in identification and imaging, concealing and anti-concealing, remote sensing, underground object detection and short distance wireless communication with high baud rate due to its a good many inherent strongpoint. Furthermore, horn antenna is also the main part of microwave energy application apparatus. The conventional horn antenna aperture field solution method always introduces various approximate or assumptive condition in the analysis, and the accuracy is lowered, so new method should be adopted for improving the calculating accuracy.Begin from the perfect application of Hamilton system in mechanics and recur to the libration issue of single freedom degree spring-sliding block system, this thesis describes the form and meaning of Hamilton system and also introduces the symplectic arithmetic which is used to resolve Hamilton mate equation group. Based on this, Hamilton mate equation group is deduced. After dispersing the aperture field by FEM.the Hamilton synthesis operator array simplifies to Hamilton array, and the dispersing process keep the system's symplectic structure. The calculus of variations equation turns to FEM equation group and solve the equation group to gain the electromagnetic value. A real calculation example is given to show the actual process. Other correlative literature and the electromagnetic simulation software Ansys Emax also give the numerical value of the same issue, comparing these two kind of value with the value gotten in this thesis, the result validates the correctness and feasibility of the method used in this thesis, in the end error analysis is made.Use rectangle waveguide aperture as array element and arrange them seasonally in the x and y axis and establish equation according to the continuity of field on the aperture. After dispersing, Hamilton operator array turns to Hamilton array. Seeking Main eigenvalue by Hamilton adjoint symplectic child space iteration method and use the eigenvector expansion to express actual field. The analysis take into account the coupling effect between array element and consider the whole plane array as a boundary. With this way the field value is general, namely it includes all field models thus matches the really value better.