A leaky-wave antenna made of cavity-backed-slot radiating elements with open-stopband suppression is presented. The cavity-backed slots are seriesly fed by a strip. The bandwidth of the unit cell of the array is enhanced by a recently-proposed technique that uses a matching stub. The open-stopband effect is mitigated by misaligning the stub with respect to the slot. An array is designed and fabricated. The array is built using an aluminum set of cavities filled with 3D printed material to support the substrate where the feed and slots are etched. The measurement of the prototype shows the overall good performance of the array. The array is able to scan its beam from $-{70}^{\circ }$ to 50${}^{\circ }$ in the 2.8–4.4 GHz frequency range, keeping good matching even at the broadside frequency. The gain is stable over the band.

介绍了一种由具有开阻带抑制功能的背腔缝隙辐射元件制成的漏波天线。背腔槽由条带串联馈送。最近提出的使用匹配短截线的技术增强了阵列单位单元的带宽。通过使短截线相对于槽错位，可以减轻开阻带效应。设计并制作了一个阵列。该阵列是使用一组填充有 3D 打印材料的铝制空腔构建的，以支撑蚀刻进料和槽的基板。样机的测量表明该阵列的整体性能良好。该阵列能够从以下位置扫描其光束$-{70}^{\circ }$ 到 50${}^{\circ }$在 2.8-4.4 GHz 频率范围内，即使在宽边频率下也能保持良好匹配。增益在整个频带内是稳定的。