研究目的
To design circularly-polarized (CP) simultaneous transmit and receive (STAR) antennas and reduce the mutual coupling (MC) between them using a novel W shaped parasitic strip.
研究成果
The novel W shaped parasitic strip effectively designs CP microstrip antennas and significantly reduces MC between them. The designed antennas achieve a 30 MHz 10-dB impedance bandwidth, 16 MHz 3-dB AR bandwidth, and a peak CP gain of 5.08 dBic. The technique reduces MC from ?7 dB to ?50 dB, restores the radiation pattern to that of an isolated antenna, and improves CP gain and efficiency. The study demonstrates the potential of the W shaped parasitic strip in enhancing the performance of closely spaced CP antennas.
研究不足
The study focuses on a specific frequency (1.65 GHz) and antenna configuration. The effectiveness of the W shaped parasitic strip may vary with different frequencies or antenna designs. The practical implementation may face challenges related to fabrication tolerances and material properties.
1：Experimental Design and Method Selection:
The study employs a novel W shaped parasitic strip to design CP microstrip antennas and reduce MC between them. The design involves optimizing the parasitic strip's dimensions to achieve desired CP performance and MC reduction.
2：Sample Selection and Data Sources:
The antennas are designed to operate at 1.65 GHz, with specific dimensions and spacing to achieve the desired performance metrics.
3：65 GHz, with specific dimensions and spacing to achieve the desired performance metrics.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The antennas and parasitic strip are printed on a substrate with specific dielectric properties. The study uses simulation tools like Ansoft HFSS for design optimization.
4：Experimental Procedures and Operational Workflow:
The design process involves parameter optimization of the parasitic strip to achieve CP radiation and MC reduction. The performance is evaluated through simulation and measurement of S parameters, radiation patterns, and AR.
5：Data Analysis Methods:
The study analyzes the antenna performance through simulation and measurement results, comparing parameters like impedance bandwidth, AR bandwidth, CP gain, and MC reduction.
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