研究目的
Investigating the design and performance of a compact-size triple-band stacked multi-port circularly polarized microstrip antenna for satellite navigation receiver systems.
研究成果
A compact-size triple-band stacked multi-port circularly polarized microstrip antenna is successfully designed and tested. The antenna meets the system application requirements with S11 covering the necessary bands, axial ratio less than 3 dB at the center frequency, and peak gain more than 4 dBic. The design is advantageous for its compact size and ease of fabrication.
研究不足
The coupling effect between layers affects the performance, leading to spurious working frequencies. The compact size achieved by loading the substrate impacts the single layer antenna's performance.
1：Experimental Design and Method Selection:
The study focuses on designing a multi-port multi-band stacked circularly polarized microstrip antenna using truncated corner single-feed microstrip antennas placed layer by layer. Software HFSS is employed for studying the antenna.
2：Sample Selection and Data Sources:
The antenna is designed to work at three bands (GPS, BDS, and 1.66 GHz) with specific polarization requirements (RHCP for GPS and BDS, LHCP for 1.66 GHz).
3：66 GHz) with specific polarization requirements (RHCP for GPS and BDS, LHCP for 66 GHz).
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: The antenna consists of three layers of microstrip patches with substrates of dielectric constant ε = 3 and thickness T = 4 mm.
4：Experimental Procedures and Operational Workflow:
The antenna is tuned by adjusting parameters such as the length of the truncated corner (L2) and the feeding point angle (A3) to achieve desired performance.
5：Data Analysis Methods:
Simulated and measured results of S11, gain, axial ratio, and radiation patterns are analyzed to evaluate the antenna's performance.
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