研究目的
To present a compact printed log-periodic dipole array antenna fed by a substrate integrated waveguide horn with phase and amplitude correction using metal-via arrays for improved performance in X-Band applications.
研究成果
The proposed antenna achieves high aperture efficiency and gain with good radiation characteristics, demonstrating the effectiveness of the SIW horn with metal-via arrays for phase and amplitude correction. Future work could focus on bandwidth enhancement and application to other frequency bands.
研究不足
The measured operating frequencies show a slight shift lower than simulated, and the bandwidth is limited to 527.5 MHz. The design is specific to X-Band and may not be directly applicable to other frequency ranges without optimization.
1：Experimental Design and Method Selection:
The antenna is designed with an SIW horn divided into eight sub-horns by metal-via arrays for phase and amplitude correction, feeding 18 printed LPDAs. The design is simulated using HFSS software and fabricated using standard PCB processes.
2：Sample Selection and Data Sources:
The antenna is fabricated on a RO4003 substrate with specified thickness, dielectric constant, and loss tangent. Measurements are conducted in the frequency range of 9.0 GHz to 10.5 GHz.
3：0 GHz to 5 GHz.
List of Experimental Equipment and Materials:
3. List of Experimental Equipment and Materials: RO4003 substrate (thickness 0.5 mm, dielectric constant 3.55, loss tangent 0.0029 at 10 GHz), metal vias (diameter 0.5 mm, space 0.8 mm), HFSS software for simulation.
4：5 mm, dielectric constant 55, loss tangent 0029 at 10 GHz), metal vias (diameter 5 mm, space 8 mm), HFSS software for simulation.
Experimental Procedures and Operational Workflow:
4. Experimental Procedures and Operational Workflow: The antenna is designed with specific geometry sizes (e.g., Wh=80 mm, Lh=63.7 mm), simulated for phase and amplitude properties, fabricated, and then measured for return loss and radiation patterns.
5：7 mm), simulated for phase and amplitude properties, fabricated, and then measured for return loss and radiation patterns.
Data Analysis Methods:
5. Data Analysis Methods: Simulated and measured data are compared for return loss, gain, beamwidth, side-lobe level, front-to-back ratio, and cross polarization using standard antenna measurement techniques.
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