研究目的
Investigating the design and performance of horn antennas in substrate integrated waveguide (SIW) at millimeter wave frequencies, specifically at 38 GHz.
研究成果
The study successfully designed SIW horn antennas with excellent reflection characteristics at 38 GHz. Geometry modifications did not significantly change the reflection factor. The antennas achieved calculated gains of 7.1 dBi to 7.5 dBi, with measured gains slightly lower. The work demonstrates the potential of SIW technology for millimeter wave applications.
研究不足
The measured reflection factors show shifted minima to higher frequencies compared to calculated values, and the predicted gain values from measurement are smaller than the calculated gains.
1：Experimental Design and Method Selection:
The study involves designing SIW horn antennas with transitions from rectangular waveguide to SIW, optimizing the transition structure for reflection characteristics, and modifying horn geometry to study its effects.
2：Sample Selection and Data Sources:
Uses Rogers RT/Duroid 5880 substrate with specific parameters for SIW design.
3：List of Experimental Equipment and Materials:
Includes ANSYS Electromagnetics Suite HFSS R2019 for simulation, ZVA67 vector network analyzer for measurement, and a standard gain antenna SAR-2309-28-S2 from Sage Millimeter for gain prediction.
4：Experimental Procedures and Operational Workflow:
Involves simulation of antenna designs, fabrication of prototypes, and measurement of reflection and transmission factors.
5：Data Analysis Methods:
Comparison of simulated and measured reflection factors and gain prediction through S21 measurement comparison.
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