This article presents a novel single-feed circularly polarized patch antenna for dual-band (2.6 and 3.4 GHz) applications. Details of the design procedure and design considerations of the proposed antenna are described. The novelties of the proposed antenna are counted by (i) a meaningful Jia-shaped patch used as the primary radiator; (ii) a 3D L-shaped feeding probe used to excite the stacked patches so that the near degenerate-modes are excited at the desired dual band; (iii) down-tilt beams achieved that are particularly suitable for wall-mount base-stations. The measured 3-dB axial-ratio bandwidths are 2.41–2.61 GHz and 3.25–3.42 GHz, where the maximum gains are recorded as 7.3 and 6.3 dBic, respectively. Methods for the adjustment of band ratio down to 1.18 are discussed. The overall antenna size is 100 × 100 × 12.8 mm³.

本文介绍了一种新颖的单馈源圆极化贴片天线，适用于双频（2.6和3.4 GHz）应用。描述了拟议天线的设计程序和设计注意事项的详细信息。提议的天线的新颖性可以通过以下方式计算：（i）用作主辐射源的有意义的贾形贴片；（ii）3D L形的馈电探针，用于激励堆叠的斑块，从而在所需的双波段激发近简并模。（iii）实现的下倾梁特别适合壁挂式基站。测得的3-dB轴向比率带宽为2.41-2.61 GHz和3.25-3.42 GHz，其中最大增益分别记录为7.3和6.3 dBic。讨论了将带宽比例调整到1.18的方法。天线的总尺寸为100×100×12.8 mm ³。