研究目的
To propose ultra-wideband harmonic rejection bandpass and bandstop frequency-selective surfaces (FSS) based on L-C lumped elements with detailed analysis and equivalent circuit models to explain the operating principles and parasitic effects.
研究成果
The study successfully proposes ultra-wideband harmonic rejection bandpass and bandstop frequency-selective surfaces based on L-C lumped elements. Detailed analysis and equivalent circuit models are provided to explain the operating principles and parasitic effects. The proposed designs exhibit the largest harmonic suppression bandwidth and are suitable for low frequency operation.
研究不足
The proposed structure is more suitable for low frequency operation due to the parasitic capacitor associated with the lumped inductor at high frequencies and the change of the component’s value with frequency.
1：Experimental Design and Method Selection:
The study employs parallel and series combinations of LC resonant circuits to achieve bandpass and bandstop responses, respectively. Equivalent circuit models are used to analyze the operating principles and parasitic effects.
2：Sample Selection and Data Sources:
The study uses simulated and measured data from fabricated prototypes to validate the proposed designs.
3：List of Experimental Equipment and Materials:
Taconic TLY-5-0200-R1/R1 material is used as the substrate material. Nylon spacers and microwave capacitors and inductors with high self-resonant frequency are employed.
4：Experimental Procedures and Operational Workflow:
The study involves simulation using CST Microwave Studio and Agilent Advanced Design System (ADS), fabrication of prototypes, and measurement using the free space method in an anechoic chamber.
5：Data Analysis Methods:
The study compares simulated and measured results to validate the proposed designs and analyzes the effects of parasitic components and frequency on performance.
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