研究目的
Investigating the design and performance of a balanced substrate integrated waveguide (SIW) filter with compact size, low insertion loss, and wide bandwidth.
研究成果
The proposed balanced SIW filter demonstrates compact size, low insertion loss, and wide bandwidth, making it suitable for modern communication systems requiring balanced bandpass filters.
研究不足
The study focuses on a specific frequency (3.5 GHz) and may not cover broader frequency ranges or different substrate materials.
1:Experimental Design and Method Selection:
The study proposes a balanced SIW filter by etching transverse slots on the top surface of SIW to achieve compact size and low loss. The resonators operate at TE20δ mode for DM and TE10δ and TE30δ modes for CM operation.
2:Sample Selection and Data Sources:
A prototype is designed at
3:5 GHz with specific dimensions and parameters. List of Experimental Equipment and Materials:
The filter is designed on a dielectric substrate with relative permittivity εr =
4:15, loss tangent of 0028, and thickness h = 27 mm. Full-wave simulation is done by CST. Experimental Procedures and Operational Workflow:
The design procedure involves obtaining initial dimensions, fixing slot widths, and optimizing performance in CST.
5:Data Analysis Methods:
The performance is evaluated based on insertion loss, return loss, and bandwidth.
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