研究目的
To design a wideband and wide-angle scanning phased array based on a wideband electromagnetic bandgap (EBG) structure.
研究成果
The proposed wideband EBG based dipole antenna and the linear phased array composed of such elements demonstrate the ability to scan up to 75° with a maximum gain reduction less than 4dB over the operating frequency band of 5 to 6.1GHz, achieving a fractional bandwidth of 19.82%.
研究不足
The difference in main beam direction at different frequencies due to phase error from the feed network, which could be mitigated by using phase shifters and power dividers.
1：Experimental Design and Method Selection:
The design involves a linear dipole array organized along the H plane, utilizing a wideband EBG structure for enhanced bandwidth and beamwidth.
2：Sample Selection and Data Sources:
Simulated results of an infinite array and a 1×20 finite linear dipole array are used to evaluate performance.
3：List of Experimental Equipment and Materials:
The design includes a dipole antenna fed by a coaxial cable, with additional shorting pins for current balance and a cover layer for wideband tuning.
4：Experimental Procedures and Operational Workflow:
The array's performance is evaluated through simulations using periodic boundary conditions and actual measurements of a fabricated array.
5：Data Analysis Methods:
Performance metrics include bandwidth, scan angle, VSWR, and gain reduction.
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