Design and Optimization of Inverted Trapezoidal Single-ridge Waveguide Slot Traveling Arrays

摘要

In order to meet the requirements of modern wireless communication, a new type of inverted trapezoidal single-ridge waveguide traveling wave slot arrays is designed and optimized by Genetic Algorithms (GA). Preliminary design is completed by transmission line theory combined with three-dimensional finite element. On this basis, Approaching ideal aperture distribution cost function is presented in GA and the pattern of slot arrays is optimized. Optimization process is completed by Matlab as leading software and HFSS as fitness calculation module, exchanging data by scripting interface. 26-elements single-ridge waveguide traveling wave slot arrays is designed to work in the X-band. The results show that the left side-lobe level decline 1.8 dB and the right side-lobe level decline 3.5dB, and the antenna performance is greatly improved compared with the existing literature.