研究目的
Investigating the design and manufacturing techniques for 3D-printable microwave filters based on arbitrarily height-modulated substrate integrated waveguides (SIW).
研究成果
The paper presents a novel technique for designing 3D-printable arbitrarily height-modulated SIW-based filters, validated through the development of bandpass and bandstop filters. The technique allows for the integration of these filters into planar structures with 3D-printed SIW-to-microstrip transitions, offering a flexible approach to filter design and manufacturing.
研究不足
The conventional fabrication of height-modulated SIW using standard prototyping machinery is complex due to the difficulty of achieving different heights in a conventional substrate. The study proposes 3D-printing as an alternative but acknowledges the challenges in alignment and conductivity provision.
1：Experimental Design and Method Selection:
The methodology involves simulating the scattering parameters of different SIW structures by sweeping their lengths and analyzing the behavior of height modulation.
2：Sample Selection and Data Sources:
The study uses two different heights, H1 and H2, for the SIW segments to achieve desired frequency responses.
3：List of Experimental Equipment and Materials:
The study employs ANSYS HFSS for electromagnetic simulations and Advanced Design System (ADS) for optimization.
4：Experimental Procedures and Operational Workflow:
The process includes simulating SIW segments, exporting S-parameters to Touchstone files, generating MDIF files, and optimizing filter designs in ADS.
5：Data Analysis Methods:
The optimization is based on gradient methods, with subsequent truncation and tuning of variables to achieve integer values for practical implementation.
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