Abstract In this paper, the scanning rate (SR) is enhanced for substrate integrated waveguide (SIW) based periodic leaky wave antenna (LWA) with continuous beam scanning. Delay line is inserted in the SIW based periodic LWA to modify the group delay profile which in turn increase the SR of the SIW based periodic LWA. Addition of the delay line enhances the SR of the SIW LWA to approximately three times from 15.6° to 47° per GHz. The prototype of the proposed LWA is fabricated and experimentally measured. The simulated and measured results show that the proposed LWA scans the angular range from −30° to +27° within a frequency span of only 1.2 GHz from 14.8 to 16 GHz (relative bandwidth of 7.7 %).

中文翻译：

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使用延迟线进行连续波束扫描的基底集成波导周期漏波天线的扫描速率增强

摘要 本文通过连续波束扫描提高了基片集成波导（SIW）周期漏波天线（LWA）的扫描速率（SR）。在基于 SIW 的周期性 LWA 中插入延迟线以修改群延迟配置文件，从而增加基于 SIW 的周期性 LWA 的 SR。添加延迟线将 SIW LWA 的 SR 提高到大约三倍，从 15.6° 到 47°/GHz。所提出的 LWA 的原型是制造和实验测量的。模拟和测量结果表明，所提出的 LWA 在 14.8 至 16 GHz 的仅 1.2 GHz 频率跨度内扫描了 -30° 至 +27° 的角度范围（7.7 % 的相对带宽）。