Investigation and design of a slottedwaveguide antenna with low 3Dsidelobes

[摘要] ENGLISH ABSTRACT: An investigation into the cause of undesired sidelobes in the 3D radiationpattern of slotted waveguide arrays is conducted. It is hypothesized thatthe cross-polarization of the antenna is at fault, along with the possibilitythat an error is made when designing a linear array. In investigating andfinding a solution to the problem, the 'Z-slotis introduced in conjunctionwith polarizer plates. The base components are used by a custom optimizationalgorithm to design reference and solution antennas. Results of theantennas are then compared to ascertain the cause and possible solutionsfor the unwanted sidelobes. The generic nature of the process may be usedto characterize other arbitrary aperture configurations and to design largerantennas.

[发布机构] Stellenbosch University