A two-dimensional (2D) periodic leaky-wave antenna (LWA) is proposed in this article. Using dielectric-filled wedge-like waveguide as medium for wave propagation, the quasi-TEM wave inside the guide is leaked through periodic rings of narrow slots, resulting in high gain frequency-dependent beam. Due to the two-dimensional nature of the antenna, along with the slots distribution, the radiation has low side lobe level (SLL) without the need to extend the length of the antenna as in the case of periodic one-dimensional (1D) LWA. The measured gain of the antenna is 20.34 dBi with SLL less than −13 dB and cross-polarization less the −28 dB. The antenna is proposed for millimeter-wave (mm-Wave) applications.

中文翻译：

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高增益周期二维泄漏波天线，向后辐射毫米波频段

本文提出了一种二维（2D）周期性漏波天线（LWA）。使用电介质填充的楔形波导作为波传播的介质，波导内的准TEM波通过窄缝隙的周期环泄漏，从而产生高增益频率相关的光束。由于天线的二维特性以及缝隙分布，辐射具有较低的旁瓣电平（SLL），而无需像周期性一维（1D）LWA那样延长天线的长度。天线的测量增益为20.34 dBi，SLL小于-13 dB，交叉极化小于-28 dB。提议将天线用于毫米波（mm-Wave）应用。