研究目的
To design and study two microstrip antenna arrays for horizontally polarized (HP) omnidirectional application, focusing on achieving high gain and high directivity.
研究成果
The H-shaped antenna array demonstrates superior omnidirectional performance compared to the rectangular patch array, with a bandwidth of 36 MHz, maximum gain of 7.4 dBi, and cross-polarization levels below -25 dB. The array achieves high directivity and good omnidirectional characteristics at the center frequency of 2.35 GHz.
研究不足
The increased dielectric constant for better omnidirectional performance may lead to decreased bandwidth, increased losses, and matching problems. The study focuses on a specific frequency range (2.35 GHz) and may not cover broader applications.
1：Experimental Design and Method Selection:
The study involves designing two types of microstrip antenna arrays (rectangular patch and H-shaped patch) with back-to-back structure, fed by a split eight power divider. Ansoft HFSS is used for simulation and optimization.
2：Sample Selection and Data Sources:
The H-shaped antenna array is fabricated and measured to validate the simulation results.
3：List of Experimental Equipment and Materials:
Substrates with different dielectric constants, SMA connectors, and probes for feeding the patches.
4：Experimental Procedures and Operational Workflow:
The antenna arrays are designed, simulated, fabricated, and then measured for performance parameters like bandwidth, gain, and cross-polarization levels.
5：Data Analysis Methods:
The performance of the antenna arrays is analyzed based on simulation and measurement results, focusing on omnidirectional performance, gain, and directivity.
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