研究目的
To propose and validate an integrated substrate gap waveguide (ISGW) bandpass filter with two transmission zeros and a wide stopband.
研究成果
The proposed ISGW filter demonstrates advantages of better controlled transmission zeros, high frequency selectivity, wider stopband, smaller footprint, and easier integration with other planar circuits.
研究不足
The measured results are slightly worse in the stopband due to implementation error and assembly process.
1:Experimental Design and Method Selection:
The filter design involves three layers of dielectric substrates for creating a substrate integrated waveguide (SIW) filter, a substrate gap layer, and a perfect magnetic conductor (PMC) layer.
2:Sample Selection and Data Sources:
The base layer uses Rogers 4003C of
3:304 mm thickness, the middle layer uses Rogers 4003C of 203 mm thickness, and the top layer uses FR4 of 6 mm thickness. List of Experimental Equipment and Materials:
A vector network analyzer (Keysight N5234A) and simulation software (HFSS) were used for analysis.
4:Experimental Procedures and Operational Workflow:
The filter was simulated, fabricated, and measured to validate its performance.
5:Data Analysis Methods:
The scattering parameters and group delay within the passband were analyzed to evaluate the filter's performance.
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