研究目的
Designing a slot-coupled microstrip line filter based on Defected Ground Structure (DGS) to achieve band-pass frequency response, with a focus on miniaturization, frequency selectivity, and high performance.
研究成果
The paper proposes a slot-coupled microstrip line filter based on DGS with a band-pass frequency response. The filter's performance is verified through simulation and equivalent circuit analysis, demonstrating its potential for applications requiring miniaturization, frequency selectivity, and high performance.
研究不足
The band-stop characteristic of DGS is limited, requiring more resonant units which can increase the filter volume. The design of pass filter structures is less common, necessitating changes to the DGS structure to achieve band-pass properties.
1：Experimental Design and Method Selection:
The filter is designed with a symmetrical structure consisting of a microstrip line with a slot and a DGS structure with six rectangular defects etched on a metal plate. HFSS software is used for simulation, and ADS software is used to extract the equivalent circuit of the filter.
2：Sample Selection and Data Sources:
Rogers RO4003 is chosen as the substrate in the dielectric layer. The thickness of the substrate is set to 0.8 mm, and the length and width are 24 mm.
3：8 mm, and the length and width are 24 mm.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: HFSS13.0 for simulation, ADS software for equivalent circuit extraction.
4：0 for simulation, ADS software for equivalent circuit extraction.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The filter's structure parameters are defined, and simulations are conducted to analyze frequency characteristics. The equivalent circuit is then extracted and compared with HFSS simulation results.
5：Data Analysis Methods:
The S-parameter curves from ADS and HFSS are compared to verify the correctness of the equivalent circuit.
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