研究目的
To design a recon?gurable feeding network for a quad-polarization-agile antenna that can exhibit two orthogonal linear polarizations and two orthogonal circular polarizations by switching PIN diodes.
研究成果
A new polarization-agile antenna with a quad-mode recon?gurable feeding network has been designed, capable of generating two orthogonal circular polarizations and two orthogonal linear polarizations. Experimental results confirm good performance in S-parameters, ARs, gains, and radiation patterns, making it suitable for antenna polarization diversity applications in wireless communication systems.
研究不足
The isolation between the two output ports is only around 6 dB, which might affect the antenna’s polarization performance.
1：Experimental Design and Method Selection:
The design involves a recon?gurable feeding network with PIN diodes to switch between four transmission modes.
2：Sample Selection and Data Sources:
The antenna and feeding network are designed and fabricated for operation at 930 MHz.
3：List of Experimental Equipment and Materials:
PIN diodes (SMP1340-079LF), dc bias circuits, inductors, resistors, and dc-blocking capacitors are used.
4：Experimental Procedures and Operational Workflow:
The feeding network is integrated with a dual-polarized aperture-coupled antenna, and its performance is measured in terms of S-parameters, phase differences, and radiation patterns.
5：Data Analysis Methods:
The performance is analyzed based on measured insertion loss, return loss, and phase differences between output ports.
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