An Optimization Method of Five-Order SISL Microstrip Bandpass Filter Using Mesh Deformation

In this paper, the size information of a five-order microstrip bandpass filter with simplified shielded SISL structure has been designed optimally using the method of mesh deformation. There are many ways to optimise the response of a filter with simplified SISL structure, and mesh deformation is one of them. Firstly, the electromagnetic field information of the simplified SISL structure is analysed by FEM, and then the dimensions of the SISL structure are changed using mesh deformation and the design is optimised to meet the specified design specifications. An example of a Five-order SISL microstrip bandpass filter is given in this paper, and using the method of this paper, it is much faster compared to the direct optimisation of the structure in HFSS.