研究目的
To present an enhanced circular polarization (CP) near-field focused (NFF) antenna array that realizes CP and NFF simultaneously without designing a specific patch shape for CP, enhances electric field focusing gain with director patches, and achieves a smaller focal point with fewer elements.
研究成果
The paper successfully presents a CP NFF antenna array technique that achieves both CP and near-field focus performances simultaneously through excitation distribution based on maximum power transmission efficiency. Director patches enhance the near-field electric field focusing gain, and the proposed array achieves a smaller focal point with fewer elements compared to existing designs.
研究不足
The study focuses on a specific frequency (2.45 GHz) and substrate (FR4), which may limit applicability to other frequencies or materials. The design's effectiveness is demonstrated through simulation and measurement, but practical deployment challenges are not discussed.
