研究目的
To develop compact dual/tri-band bandpass filters with controllable frequency and high selectivity for WLAN applications.
研究成果
Compact and high-selectivity dual/tri-band BPFs for WLAN applications were successfully developed, demonstrating good agreement between simulations and measurements. The designs achieved low insertion losses and high return losses within compact sizes.
研究不足
The study is limited to WLAN applications and specific frequency bands. The performance may vary with different substrate materials or thicknesses.
1：Experimental Design and Method Selection:
The design utilizes a stepped impedance resonator with a shorting stub and a uniform impedance resonator with an open stub. Full-wave simulations characterize the resonators and proposed filters.
2：Sample Selection and Data Sources:
The study focuses on designing filters for WLAN applications, with passbands centered at 2.4 GHz, 5.2 GHz, and 5.8 GHz.
3：4 GHz, 2 GHz, and 8 GHz.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Substrate with a thickness of 0.8 mm and a relative dielectric constant of 2.55 is used. Ansys HFSS software is employed for simulations.
4：8 mm and a relative dielectric constant of 55 is used. Ansys HFSS software is employed for simulations.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The design process involves initial characterization of resonators, combination to form dual/tri-band filters, and optimization using Ansys HFSS.
5：Data Analysis Methods:
The performance of the filters is analyzed based on reflection and transmission coefficients, insertion losses, and bandwidths.
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