This letter presents the design and study of a novel aperture coupled cylindrical dielectric resonator antenna (cDRA). Unique aspects of the proposed antenna design are that proposed aperture can excite six different hybrid radiating modes (HEM_11δ, HEM_11δ+1, HEM_12δ-like, HEM_12δ, HEM_13δ, HEM_14δ) in the cDRA; first time, quad-band quad-sense circular polarization is obtained in the dielectric resonator antenna structure; and radiation characteristics (broadsided) are almost same in all the frequency bands. These features make the proposed antenna structure relevant for L1/L2 GPS bands (1.2/1.5 GHz), CNSS, wireless LAN (2.4 GHz) as well as WiMAX (2.5 GHz) applications.

中文翻译：

---

用于 GPS/CNSS/WLAN/WiMAX 应用的四频段四感圆极化介质谐振器天线

这封信介绍了新型孔径耦合圆柱形介质谐振器天线 (cDRA) 的设计和研究。提议的天线设计的独特之处在于提议的孔径可以激发六种不同的混合辐射模式（HEM _11δ, 下摆_11δ+1 , 下摆_12δ样，HEM _12δ, 下摆_13δ, 折边_14δ) 在 cDRA 中；首次在介质谐振器天线结构中获得四频四感圆极化；和辐射特性（宽边）在所有频段中几乎相同。这些特性使建议的天线结构适用于 L1/L2 GPS 频段 (1.2/1.5 GHz)、CNSS、无线 LAN (2.4 GHz) 以及 WiMAX (2.5 GHz) 应用。