新型双频双极化磁电偶极子天线

Novel Dual-Frequency Dual-Polarized Magnetoelectric Dipole Antenna

设计了一款新型的双频、正交双线极化、宽带磁电偶极子天线。该天线采用两对磁电偶极子正交放置实现了双线极化。为实现双频工作,其电偶极子设计为包含上层大振子和下层小振子的双层结构,并且上层大振子为空心结构以减少对下层小振子的电磁辐射遮挡。最终设计和加工了一只天线样品,测试表明该天线拥有两个宽带工作频段,其VSWR<2阻抗带宽分别达到58.3%(3.4~6.2 GHz)和47.5%(8.5~13.8 GHz)。同时具有良好的定向方向图和稳定增益,两个频段内增益分别为7.6±0.5 dBi和9.5±1.3 dBi。

A new type of dual-frequency, orthogonal dual-line polarized,wideband magneto-electric dipole antenna is designed.The antenna uses two pairs of magnetoelectric dipoles orthogonally placed to achieve dual-line polarization. This realizes dualfrequency operation, and its electric dipole is designed as a double-layer structure including an upper large vibrator and a lower small vibrator, and the upper large vibrator is a hollow structure to reduce electromagnetic shielding of the lower small vibrator. An antenna sample was designed and processed. The test showed that the antenna has two wideband operating frequency bands, and its VSWR<2 impedance bandwidth reached 58.3%(3.4~6.2 GHz)and 47.5%(8.5~13.8 GHz), respectively. It has a good directional pattern and stable gain. The gains in the two frequency bands are 7.6±0.5 dBi and 9.5±1.3 dBi respectively.