| 摘要: |
| 设计和制作了一种实现宽角波束扫描的1×3超宽带双锥线极化阵列天线，可以应用于无人机上实现空地宽带通信。由于无人机平台安装尺寸受限，通过用椭球形阵子代替传统锥形阵子，并切割椭球振子外部轮廓使其安装在250 mm×130 mm×90 mm的空间内，实现了低剖面、小型化等特点。仿真结果表明，该阵列天线在0.8~2.4 GHz的频带范围内电压驻波比均小于2.5，在±45°波束扫描范围内的4个波束的最低增益均超过了2 dBi，满足实际的应用需求。 |
| 关键词: 无人机 空地宽带通信 超宽带 双锥阵列天线 宽波束扫描 |
| DOI：10.20079/j.issn.1001-893x.230131005 |
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| 基金项目: |
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| Development of an Ultra-wideband Biconical Line Array Antenna with Low VSWR and Wide Angle Beam |
| HU Zhenwei,WU Di,LIN Min,ZHU Weiping |
| (College of Communication and Information Engineering,Nanjing University of Posts and Telecommunications,Nanjing 210000,China) |
| Abstract: |
| A 1×3 ultra-wideband biconical array antenna for beam-steering applications is designed and fabricated,which can be applied to unmanned aerial vehicle(UAV) to realize air-ground broadband communication.Due to the limited installation size on the UAV,the low-profile and miniaturization characteristics are achieved by using an elliptical array instead of a traditional conical array and by cutting the outer contour of the elliptical oscillator the antenna is fit in a space of 250 mm×130 mm×90 mm.The simulated results show that the proposed antenna achieves an impedance bandwidth of 0.8~2.4 GHz with voltage standing wave ratio(VSWR)＜2.5，and the minimum gain of the four beams with an beam scanning range ±45° is not less than 2 dBi,which meets practical application requirements. |
| Key words: UAV air-ground broadband communication ultra-wideband biconical line array antenna wide beam scanning |
