In this article, a broadband circularly polarized rectangular dielectric resonator antenna (CP‐RDRA) is explored and reported. The proposed antenna comprises of rectangular dielectric resonator (DR) made up of aluminum oxide placed on a Rogers RT‐5880 substrate and fed by a 50‐Ω microstrip line with a partial ground plane. Microstrip line feed is placed at the right edge of rectangular DR to excite orthogonal fields, which achieves circular polarization (CP). The proposed antenna is fabricated and characterized. The measured −10 dB impedance bandwidth and 3 dB axial bandwidth are obtained as 5.44 GHz (5.79‐11.23 GHz) and 2.93 GHz (6.08‐9.01 GHz), respectively. The peak realized gain and antenna efficiency are obtained to be 4.62 dBi and 94%, respectively, in the desired frequency band. In addition, the proposed CP‐RDRA is also realized using a new technique of glueless concept to achieve mechanical stability that also enhances the axial bandwidth without affecting the radiation characteristics. It is observed from the results that the proposed antenna can be a potential candidate for C‐band and X‐band in satellite communication systems.

中文翻译：

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使用有效无胶技术的宽带圆极化边缘馈电矩形介质谐振器天线

本文探讨并报道了宽带圆极化矩形介质谐振器天线（CP‐RDRA）。拟议中的天线包括由氧化铝制成的矩形介电谐振器（DR），该谐振器由氧化铝制成，放置在Rogers RT-5880基板上，并由带有部分接地层的50Ω微带线馈电。微带线进给位于矩形DR的右边缘，以激发正交场，从而实现圆极化（CP）。所提出的天线已完成制造和表征。测得的-10 dB阻抗带宽和3 dB轴向带宽分别为5.44 GHz（5.79-11.23 GHz）和2.93 GHz（6.08-9.01 GHz）。在所需频带中，峰值实现增益和天线效率分别为4.62 dBi和94％。此外，提议的CP‐RDRA也使用无胶概念的新技术实现，以实现机械稳定性，并在不影响辐射特性的情况下提高了轴向带宽。从结果可以看出，拟议的天线可以成为卫星通信系统中C波段和X波段的潜在候选者。