When a leaky rectangular waveguide is used to realize the coverage of radio wave in the small confined spaces, there will be a shadow region, which influences the coverage performance. In this paper, the traditional leaky rectangular waveguide is improved according to the principle of the equivalent circuit, by cutting interdigital slots in the upper wall and adding uniserial metal vias between the upper and lower walls of the rectangular waveguide. Thus, the right/left-handed transmission line property is introduced to the periodic leaky-waveguide (LWG), realizing the broadside radiation with relatively high gain (15.7 dBi), good cross polarization (−50 dB), and narrow half-power beamwidth (10.9°) at 6.97 GHz and providing a method for a uniform coverage of the radio wave in rooms without a shadow region.

中文翻译：

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具有宽边辐射特性的右/左手泄漏矩形波导管

当使用泄漏矩形波导实现在狭窄密闭空间内对无线电波的覆盖时，会出现阴影区域，从而影响覆盖性能。在本文中，根据等效电路原理，对传统的泄漏矩形波导管进行了改进，方法是在矩形波导管的上壁上切开叉指槽，并在上下壁之间增加无用的金属通孔。因此，右/左手传输线特性被引入到周期性泄漏波导（LWG）中，从而实现了具有较高增益（15.7 dBi），良好的交叉极化（-50 dB）和窄半功率的宽边辐射6.97 GHz时的波束宽度（10.9°），并提供了一种在没有阴影区域的房间内均匀覆盖无线电波的方法。