A dual-band rectangular dielectric resonator (DR) antenna is implemented with a multi-frequency circularly polarised (CP) response. The wide dual-band response is achieved by inserting the slots in the DR. The insertion of slots in the DR in a specific manner generates the orthogonal degenerate modes. Consequently, the multi-frequency CP response is obtained. The antenna provides the total overlapping CP bandwidth of 4.96% (13.36-14.04 GHz) in the lower band and 3.28% (14.95-15.45 GHz), 9.624% (17.11-18.84 GHz) and 0.517% (19.28-19.38 GHz) in the upper band. The antenna provides the 10 dB impedance bandwidth of 6.44% (13.36-14.25 GHz) and 28.89% (14.95-20 GHz) in the lower and upper bands, respectively. The peak gain of antenna remains >3 dBic in the passbands.

中文翻译：

---

多频圆极化双频电介质谐振器天线

具有多频圆极化（CP）响应的双频矩形介质谐振器（DR）天线得以实现。通过在DR中插入插槽来实现宽双频响应。以特定方式在DR中插入时隙会生成正交简并模式。因此，获得了多频CP响应。天线在较低频段提供的总重叠CP带宽为4.96％（13.36-14.04 GHz），在频段为3.28％（14.95-15.45 GHz），9.624％（17.11-18.84 GHz）和0.517％（19.28-19.38 GHz）。高频段。该天线在较低和较高频段分别提供6.44％（13.36-14.25 GHz）和28.89％（14.95-20 GHz）的10 dB阻抗带宽。天线的峰值增益在通带中保持> 3 dBic。