研究目的
To design a high-performance dual circularly polarized X-band microstrip patch antenna for satellite communication, aiming for high return loss, high isolation, high gain, low cross polarization, and broad bandwidth, with potential use as a basic element in phased array antennas.
研究成果
The proposed dual circularly polarized microstrip patch antenna achieves high performance in terms of return loss, isolation, gain, and low cross polarization over the X-band, making it suitable for satellite communication. It can serve as a basic element for phased array antennas due to its compact and lightweight design. Future work should address fabrication challenges to minimize discrepancies between simulated and measured results.
研究不足
The measured results showed a frequency shift of 400MHz compared to simulations, likely due to alignment issues, bonding material variations, air gaps between layers, and thickness inconsistencies during fabrication. These factors could affect performance and need optimization for better accuracy.
1：Experimental Design and Method Selection:
The antenna design uses a stacked substrate approach with a square patch on the top layer and a 90-degree hybrid coupler on the bottom layer, employing aperture coupling through slots in the ground plane for dual circular polarization. Ansoft HFSS software was used for simulation.
2：Sample Selection and Data Sources:
The antenna was fabricated and measured, with results compared to simulations. The design includes specific materials and dimensions.
3：List of Experimental Equipment and Materials:
Dielectric substrates (Kapton with εr=3.1, TFG material with εr=2.55), air foam (εr=1.0006), branchline coupler, and fabrication tools for the prototype.
4：1, TFG material with εr=55), air foam (εr=0006), branchline coupler, and fabrication tools for the prototype.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The antenna was designed, simulated using HFSS, fabricated, and then measured for parameters like return loss, isolation, gain, cross polarization, and axial ratio over the 8-8.4GHz band.
5：4GHz band.
Data Analysis Methods:
5. Data Analysis Methods: Simulated and measured data were analyzed to evaluate performance metrics such as bandwidth, isolation, gain, and axial ratio, with comparisons made to assess discrepancies.
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
