研究目的
Investigating the design and feasibility of compact quad-band band-pass filters using stepped-impedance coupled-line quad-mode resonators (SICLQMRs) for wireless communication applications.
研究成果
The proposed SICLQMRs provide a compact and efficient solution for quad-band band-pass filters with controlled resonating frequencies. The design demonstrates good agreement between simulated and measured results, indicating feasibility for wireless communication applications.
研究不足
The higher insertion losses in the third and fourth passbands due to lower relative bandwidths and the need for optimization to achieve desired external Q factors.
1:Experimental Design and Method Selection:
The study employs SICLQMRs for designing compact quad-band band-pass filters, utilizing their folded structure and parallel couplings for size reduction and frequency control.
2:Sample Selection and Data Sources:
The filters are designed and simulated, then measured for performance comparison.
3:List of Experimental Equipment and Materials:
PCB with a dielectric constant of
4:65 and a thickness of 1 mm is used for filter implementation. Experimental Procedures and Operational Workflow:
The design involves determining resonator dimensions, optimizing input/output coupling structures, and conducting full-wave optimization for optimal passband responses.
5:Data Analysis Methods:
Simulated and measured S parameters are compared to validate the design.
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