研究目的
To design and analyze a dual-band microstrip antenna array operating at 28 GHz and 38 GHz for 5G applications, focusing on improving gain through array configurations and defected ground structure techniques.
研究成果
The designed dual-band microstrip antenna arrays successfully operate at 28 GHz and 38 GHz for 5G applications, with gain increasing as the number of elements in the array increases. The six-element array achieves the highest gains of 7.47 dBi at 28 GHz and 12.1 dBi at 38 GHz, demonstrating the effectiveness of array configurations and DGS techniques in enhancing antenna performance. Future work could involve physical prototyping and testing to validate simulations and explore further optimizations.
研究不足
The study is based on simulations using CST Microwave Studio, which may not fully capture real-world effects such as manufacturing tolerances, environmental factors, or mutual coupling in physical implementations. The design focuses on specific frequencies (28/38 GHz) and substrate materials, limiting generalizability to other bands or materials. Practical aspects like cost, size constraints, and integration into 5G systems are not addressed.
1：Experimental Design and Method Selection:
The study involves designing single, two, four, and six-element microstrip antenna arrays using a triangular-shaped slot on the ground plane (defected ground structure, DGS) to enhance bandwidth and gain. The design is based on microstrip antenna theory and array principles, with simulations performed using CST Microwave Studio software.
2：Sample Selection and Data Sources:
The antennas are designed on a Rogers Duroid 5880 substrate with specific dielectric properties. No external datasets are used; all data is generated from simulations.
3：List of Experimental Equipment and Materials:
Substrate material (Rogers Duroid 5880 with εr=
4：2, tan δ=0009, thickness=575 mm), microstrip feed lines (50 ? impedance), and simulation software (CST Microwave Studio). Experimental Procedures and Operational Workflow:
Design parameters are calculated using equations for patch width, length, and effective permittivity. Arrays are constructed with specified spacings between elements (e.g.,
5：75 mm for two elements). Simulations are run to measure return loss (S11) and gain at 28 GHz and 38 GHz. Data Analysis Methods:
Results are analyzed through simulated return loss and gain plots, with comparisons made between different array configurations to evaluate performance improvements.
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