研究目的
Investigating the design and characteristics of a millimeter-wave waveguide reflectarray antenna with a protective plastic cover that partially fills waveguides to provide additional phase correction.
研究成果
The proposed millimeter-wave waveguide reflectarray antenna design, optimized for manufacturing with laser-cutting and 3D printing, provides a good compromise between cost and technological effectiveness on one hand and electrical and mechanical characteristics on the other hand. The measured relative bandwidth is 57%, with a peak directivity of 27.6 dB.
研究不足
The measured side lobe level is higher than the theoretical one, which may be explained by limited accuracy of 3D printing and laser-cutting.
1：Experimental Design and Method Selection:
The study involves the design of a waveguide reflectarray antenna with a protective plastic cover that partially fills waveguides. The design is optimized for manufacturing with laser-cutting and 3D printing techniques.
2：Sample Selection and Data Sources:
The prototype is fabricated using a HIPS material for 3D printing of the plastic cover and perforated metal layers made with laser cutting.
3：List of Experimental Equipment and Materials:
A low-cost plastic 3D printer based on RepRap
4：4 board under 'Arduino mega 2560' control ('Marlin' firmware) is used for fabricating the prototype. Experimental Procedures and Operational Workflow:
The reflectarray prototype is assembled from 3D-printed dielectric parts and laser-cut metal layers. The performance is evaluated through numerical simulations and experimental measurements.
5：Data Analysis Methods:
The performance is assessed based on directivity, bandwidth, and radiation patterns, with comparisons made between numerical and experimental results.
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