研究目的
To design a triple band-notched UWB antenna to avoid interference from WLAN, WiMAX, and X-band satellite systems within the UWB frequency range.
研究成果
The presented UWB antenna successfully achieves triple band-notched function at 2.59–4.01 GHz, 4.73–6.11 GHz, and 7.68–8.40 GHz, effectively avoiding interference from WiMAX, WLAN, and X-band satellite systems. It exhibits good omnidirectional radiation patterns and performance, making it suitable for UWB applications. Future work could focus on further miniaturization and additional band rejections.
研究不足
The antenna size is moderate but may not be the smallest; slight deviations in measurements could be due to fabrication imperfections or SMA connector errors; the design focuses on specific notched bands and may not cover all potential interference sources.
1：Experimental Design and Method Selection:
The antenna was designed using an arc H-shaped slot on the radiating patch and narrow slots on the ground plane to create three notched bands. Simulations were performed using Ansoft HFSS software to optimize parameters.
2：Sample Selection and Data Sources:
A prototype antenna was fabricated on an FR-4 substrate with specific dimensions.
3：List of Experimental Equipment and Materials:
FR-4 substrate, SMA connector, Agilent N5230A vector network analyzer for measurements.
4：Experimental Procedures and Operational Workflow:
The antenna was manufactured, and return loss was measured using the vector network analyzer. Surface current distributions and radiation patterns were simulated.
5：Data Analysis Methods:
Return loss, input impedance, gain, efficiency, and radiation patterns were analyzed; equivalent circuit modeling was done using ADS 2017 software.
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