龙伯透镜天线具有高增益、低副瓣和宽带特性, 可以实现多波束, 进行大角度扫描等优点, 主要应用于卫星通信、电子对抗等领域。但因其体积大、重量大和球形结构不易固定等缺点, 在实际应用中受到很大的限制。本文基于光学变换原理设计了一种新型的全介质平面龙伯透镜天线, 半径为60 mm, 厚度为20 mm, 在15 GHz时, 天线增益为23 dB, 半功率波束宽度为12°, 第一副瓣电平低于-23 dB。同时设计了平面和圆弧馈源阵列, 在70°范围内实现了较好的多波束覆盖。

Luneburg lens antennas with high gain, low sidelobe and broadband properties, can achieve multi-beam, large scanning angle, etc. They have extensive applications in satellite communications, electronic warfare, etc. However, its bulky and heavy shape limits the practical application. A new type of all-dielectric Planar Luneburg lens has been proposed, based on the principle of optical transform, with a radius of 60 mm, a thickness of 20 mm. At 15 GHz, the antenna gain is 23 dB, the half-power beam width 12°, the first side lobe level is below -23 dB. Also the planar and circular feed arrays are designed, achieving a good multi-beam performance in about 70° range.