南京信息工程大学学报2019，Vol.11Issue(1)：1-7,7.DOI:10.13878/j.cnki.jnuist.2019.01.001
全向及定向圆极化天线的小型化研究
Miniaturization techniques for omnidirectional and unidirectional circularly polarized antennas
摘要
Abstract
This paper introduces two miniaturized antennas for either omnidirectional or unidirectional radiation.These two antenna designs are based on the manipulation of two electric and magnetic radiators. First, omnidirectional CP antennas have broad radiation coverage and can avoid the polarization mismatch problem, which are suitable for device-to-device (D2D) and satellite communications.Two horizontally placed electric and magnetic radiators excited with equal amplitude and 90 degree phase difference can produce omnidirectional CP pattern.This paper will present a 28 GHz compact wheel-shaped omnidirectional CP antenna.The entire antenna is printed on a dielectric disk with the diameter of only 4 mm.It has broad bandwidth and good electrical characteristics, which is ideal for compact 5G mobile terminals.Second, unidirectional CP antennas have high directivity and can avoid polarization mismatch problem, which have been widely used in satellite mobile terminals. Two orthogonally placed electric and magnetic radiators excited with equal amplitude and phase produce unidirectional cardioid-shaped radiation pattern.This paper will introduce an electrically small unidirectional CP antenna, which organically combines two metamaterial-inspired electric and magnetic radiator into a compact entity.This antenna is ideal for satellite communication and wireless power transfer applications.关键词
圆极化天线/全向辐射方向图/定向辐射方向图/天线小型化Key words
CP antenna/omnidirectional/unidirectional/miniaturized antennas分类
信息技术与安全科学引用本文复制引用
蔺炜..全向及定向圆极化天线的小型化研究[J].南京信息工程大学学报,2019,11(1):1-7,7.基金项目
Australian Research Council under Grant DP160102219 （）
UTS Early Career Researcher Grant (PRO17-4544) （PRO17-4544）
