A backward to forward scanning periodic microstrip leaky wave antenna (MLWA) is presented. The proposed antenna consists of a long rectangular patch with alternating shorting pin on each side, which connects the antenna patch and the ground plane to form periodic shorting circuits. There are two pairs of slots alternately spaced on the long patch to suppress the open stop band (OSB). The OSB problem was initially reduced by optimizing the structural parameters, and the slotting on the patch further improved it. The measured radiation pattern in the y-z plane shows that the antenna can scan electronically from 142° to 39° toward the end-fire (+z direction) when the operating frequency changes from 6 GHz to 12.9 GHz. The measured gain is greater than 5 dBi over the entire operating band.

中文翻译：

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具有双面短路针和成对缝隙的周期性微带漏泄天线

提出了一种从前向后扫描的周期性微带漏波天线（MLWA）。拟议的天线由一个长的矩形贴片组成，每个侧面上都有交替的短路针，该天线将天线贴片和接地层连接起来，形成周期性的短路电路。在长贴片上有两对交替排列的插槽，以抑制开放阻带（OSB）。最初通过优化结构参数减少了OSB问题，并且补丁上的开槽进一步改善了它。在yz平面上测得的辐射方向图表明，天线可以从142°到39°朝着端射（+ z当工作频率从6 GHz变为12.9 GHz时）。在整个工作频段内，测得的增益大于5 dBi。