研究目的
Designing a compact single-layer balanced bandpass filter using eighth-mode substrate integrated waveguide cavities with high selectivity and good stopband performances.
研究成果
The proposed balanced EMSIW BPF achieves compact size, high selectivity, and wideband DM and CM suppressions, making it suitable for modern wireless communications.
研究不足
The study focuses on a specific frequency (2.4 GHz) and may require adjustments for other frequencies. The compact size and high selectivity are achieved at the cost of potential challenges in fabrication precision.
1：Experimental Design and Method Selection:
The design utilizes eighth-mode substrate integrated waveguide (EMSIW) cavities arranged in a new configuration to achieve a compact single-layer balanced bandpass filter. The filter's operation is based on differential-mode (DM) and common-mode (CM) responses.
2：Sample Selection and Data Sources:
The substrate material used is cer-10 with a relative permittivity of 10.2 and thickness of 0.787 mm.
3：2 and thickness of 787 mm.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: Agilent N5244A network analyzer for measurement, cer-10 substrate material.
4：Experimental Procedures and Operational Workflow:
The filter is designed, fabricated, and measured to verify its performance. The layout includes an isosceles right-angled triangular patch resonator and six EMSIW cavities.
5：Data Analysis Methods:
The performance is analyzed based on simulated and measured responses, including insert loss, return loss, and bandwidth.
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