研究目的
To design a co-designed defected ground structure (DGS) filter with slot antenna to improve band-edge selectivity, in-band impedance matching, and radiation efficiency for UWB applications.
研究成果
The proposed co-designed DGS filter with slot antenna demonstrates improved band-edge selectivity, in-band impedance matching, and radiation efficiency, making it suitable for UWB applications with a compact size.
研究不足
The study focuses on a specific antenna design for UWB applications; limitations may include the use of a particular substrate material and frequency range, with potential for further optimization in size or performance for other applications.
1：Experimental Design and Method Selection:
The study involves designing and testing a novel antenna structure that integrates a defected ground structure (DGS) and additional narrow slots with a stepped slot antenna. Numerical simulations and experimental measurements are used to validate the design.
2：Sample Selection and Data Sources:
The antenna is fabricated on an RT/Duroid 5880 substrate. Data is collected through simulations using CST Microwave Studio and measurements of reflection coefficient, gain, radiation patterns, and efficiency.
3：List of Experimental Equipment and Materials:
Substrate (RT/Duroid 5880 with relative dielectric constant of
4：2 and thickness of 787 mm), microstrip feeding line, and equipment for manufacturing and testing antennas. Experimental Procedures and Operational Workflow:
Design iterations (Type-I, Type-II, Type-III) are simulated and optimized. The final design is manufactured and tested for reflection coefficient, radiation patterns, gain, and efficiency.
5：Data Analysis Methods:
Analysis includes comparing simulated and measured results, calculating shape factor (ratio of -3 dB bandwidth to -10 dB bandwidth), and evaluating performance metrics against reference designs.
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