基于传输线馈电的双频双圆极化滤波天线

IF 0.7 Q4 ENGINEERING, ELECTRICAL & ELECTRONIC Progress in Electromagnetics Research Letters Pub Date : 2022-01-01 DOI:10.2528/pierl22011402

Wei Luo, Wuquan Chen, Yi Ren

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引用次数: 0

摘要

现代卫星通信系统的上行链路和下行链路在不同的频段上运行。提出了一种新型单端口双频双圆极化(cid:12)天线。该天线的双频特性是通过激励叠片获得的。该天线在低频段支持右旋圆极化(RHCP)，在高频段支持左旋圆极化(LHCP)。馈电网络采用带线实现，天线可等效为并联电路。如果低频片工作，则高频片呈现高阻抗，反之亦然。因此，该天线具有优异的滤波性能(cid:12)。天线样机的测量结果与仿真结果吻合较好。阻抗带宽为5.80{6.10 GHz和9.20{10.64 GHz，轴向比(AR)带宽低频段为40mhz，高频段为180mhz。同时，在工作频段内，辐射方向图是稳定的。

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DUAL-BAND DUAL CIRCULAR POLARIZATION FILTER ANTENNA BASED ON TRANSMISSION LINE FEED

|The uplink and downlink of modern satellite communication systems operate on diﬀerent frequency bands. A novel dual-band dual circular polarization (cid:12)lter antenna with a single port is proposed in this paper. The dual-band characteristic of the antenna is obtained by exciting stacked patches. The antenna supports right-handed circular polarization (RHCP) at lower frequency band and left-handed circular polarization (LHCP) at higher frequency band, respectively. The feeding network is realized with a strip line, and the antenna can be equivalent to a parallel circuit. If the lower frequency patch works, the higher frequency patch presents high impedance, and vice versa. Therefore, the antenna has excellent (cid:12)ltering performance. The measurements of antenna prototype are in good agreement with the simulation results. The impedance bandwidth is 5.80{6.10 GHz and 9.20{10.64 GHz, and the axial ratio (AR) bandwidth is 40 MHz for lower band and 180 MHz for higher band, respectively. Meanwhile, the radiation pattern is stable in the operation frequency bands.

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来源期刊

Progress in Electromagnetics Research Letters ENGINEERING, ELECTRICAL & ELECTRONIC-

CiteScore

2.20

自引率

11.10%

发文量