研究目的
To design an ultrawideband and miniaturized spoof plasmonic antipodal Vivaldi antenna (AVA) for 2G/3G/4G/5G base station applications, achieving stable radiation pattern, high gain, and miniaturization.
研究成果
The designed broadband and miniaturized plasmonic antipodal Vivaldi antenna operates from 1.8 GHz to 6 GHz, covering 2G/3G/4G/5G communication bands. The antenna exhibits stable radiation patterns and an average gain of 7.24 dBi, with good agreement between simulated and measured results. The electrical size is reduced by 25.3 percent compared to the typical AVA.
研究不足
The study focuses on the sub-6 GHz frequency band for 5G applications, and the electrical size of the proposed antenna is slightly larger than some references. The gain decreases at frequencies higher than 5.5 GHz.
1：Experimental Design and Method Selection:
The study involves designing a modified antipodal Vivaldi antenna (AVA) by loading plasmonic metamaterials, composed of the AVA and loaded periodic slots. The methodology includes numerical simulations using CST Microwave Studio and fabrication of the proposed antenna for testing.
2：Sample Selection and Data Sources:
The antenna is designed to operate from 1.8 GHz to 6 GHz, covering 2G/3G/4G/5G frequency bands. The performance is validated through simulation and measurement.
3：8 GHz to 6 GHz, covering 2G/3G/4G/5G frequency bands. The performance is validated through simulation and measurement.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: A 50-Ω SMA connector is used to feed the antenna. The fabricated antenna is measured using a vector network analyzer (Keysight 8722ES) and an anechoic chamber operating from 600 MHz to 40 GHz.
4：Experimental Procedures and Operational Workflow:
The design process includes optimizing the antenna's dimensions and groove parameters to achieve desired performance. The fabricated antenna is then tested to validate the simulation results.
5：Data Analysis Methods:
The performance of the antenna is analyzed based on reflection coefficients, gain, and radiation patterns, comparing simulated and measured results.
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