一种带滤波功能的圆极化可控阵列天线

发布时间：2018-05-14 19:01

本文选题：阵列天线 + 圆极化　；参考：《微波学报》2017年05期

【摘要】：提出了一种带滤波功能的2×2圆极化可控阵列天线,采用探针对每个辐射贴片进行馈电,通过控制辐射贴片的激励相位和极化,实现整个阵列天线的圆极化特性。嵌入在阵列天线馈电网络中的耦合谐振器对保证了馈电网络在幅度响应上呈现滤波特性的同时,在相位上控制每个辐射贴片激励端口处的信号相位在-90°和90°之间变化,同时结合90°移相网络,可实现对整个阵列天线左旋圆极化(LHCP)和右旋圆极化(RHCP)的控制。实测结果表明:该阵列天线能控制辐射的圆极化特性,并获得优异的LHCP和RHCP特性;在两种极化状态下,阵列天线工作频带内均具有较为平坦的增益特性,平均增益为10.4 dBic,带外增益特性呈现较好的滤波特性,在远离通带上、下边带100 MHz处增益抑制均达到8.6 dB以上。
[Abstract]:A 2 脳 2 circularly polarized controllable array antenna with filtering function is proposed. The circular polarization characteristic of the whole array antenna is realized by controlling the exciting phase and polarization of the radiation patch. The coupled resonator embedded in the array antenna feed network ensures that the feed network presents filtering characteristics in amplitude response, while controlling the variation of the signal phase between -90 掳and 90 掳at the excitation port of each radiation patch on the phase. Combined with 90 掳phase-shift network, the LHCP and RHCP) of the whole array antenna can be controlled. The experimental results show that the array antenna can control the circular polarization characteristics of radiation and obtain excellent LHCP and RHCP characteristics. The average gain is 10.4 dBic. the out-of-band gain shows better filtering characteristics, and the gain suppression is above 8.6dB at the lower side band of 100dBic far away from the passband.
【作者单位】：宁波大学信息科学与工程学院;毫米波国家重点实验室;浙江大学信息与电子工程学院;
【基金】：浙江省自然科学青年基金项目(LQ17F010002) 宁波市自然科学基金项目(2016A610063) 宁波大学校基金项目(XYL16004)
【分类号】：TN821.1

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