A dielectric slab waveguide based four-element leaky-wave antenna array configuration, with open-stopband suppression, operating in K $_a$ -band is presented. A one-to-four power divider using Y-junctions is developed for the feed network of the antenna array. Leaky-wave antennas are inherently directive in the plane of the length of the aperture. Owing to the array configuration, the beamwidth of the radiation pattern in the transverse plane decreases. Hence, a frequency-scanning pencil-beam radiation pattern is obtained. The array is placed above a planar metal reflector, thereby further increasing the radiation gain.

中文翻译：

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基于毫米波介质波导的漏波天线阵列

基于介电平板波导的四元漏波天线阵列配置，具有开带抑制功能，工作于 ķ $ _a $ 乐队介绍。针对天线阵列的馈电网络，开发了使用Y型结的一到四功率分配器。漏波天线固有地指向孔径长度的平面。由于阵列构造，辐射图案在横向平面中的束宽减小。因此，获得了频率扫描笔形束辐射图案。该阵列放置在平面金属反射器上方，从而进一步增加了辐射增益。