研究目的
To propose a novel method for reconfiguring the polarization of a dielectric resonator antenna with beam steering performance, suitable for RFID reader applications.
研究成果
The liquid DRA achieves continuous beam steering in a narrow angle range during liquid injection, with polarization reconfiguration from LHCP to LP to RHCP. This enhances performance for RFID reader applications by mitigating polarization mismatching and multipath interference.
研究不足
The beam steering is limited to a narrow angle range (e.g., from +10° to -10°), and the method relies on liquid pumping, which may introduce practical challenges in real-world applications such as leakage or pump reliability.
1：Experimental Design and Method Selection:
The experiment involves a liquid dielectric resonator antenna (DRA) with a 3-D printed container divided into two zones. Liquid (ethyl acetate solution) is pumped between zones to alter the dielectric properties, enabling polarization reconfiguration and beam steering. The design is based on the truncated corner DRA principle from reference [7].
2：7].
Sample Selection and Data Sources:
2. Sample Selection and Data Sources: The antenna is the sample, with liquid volume changes controlled by a pump. Data on standing wave ratio (SWR), axial ratio (AR), and radiation patterns are collected at 2.4 GHz.
3：4 GHz.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: A 3-D printed container, ethyl acetate solution, a pump for liquid control, pipes for liquid and air in/out, and measurement equipment for SWR, AR, and radiation patterns.
4：Experimental Procedures and Operational Workflow:
Liquid is injected into the left zone (STATE 1 for LHCP), pumped to the right zone (STATE 2 for LP), and then to full right zone (STATE 3 for RHCP). Radiation patterns are measured in different planes (e.g., φ=0° and φ=90°) during the process.
5：Data Analysis Methods:
SWR and AR are analyzed to verify polarization states; 2-D and 3-D radiation patterns are used to observe beam steering and polarization changes.
独家科研数据包，助您复现前沿成果，加速创新突破
获取完整内容
