In this article, a highly efficient terahertz (THz) beam-steerable integrated radiator based on tunable boundary conditions is presented. The boundary conditions seen by the central slot radiator are tuned by the switched slots, and the corresponding radiation patterns can be altered. This technique enables a beam-steerable THz antenna with high radiation efficiency. In addition, the DC-THz efficiency of the harmonic voltage-control oscillator (VCO) is boosted through the 2-D harmonic boosting technique. Based on the two techniques above, the THz beam-steerable radiator has been implemented in a 130-nm SiGe BiCMOS process ( fT/fmax=300f_{T}/f_{\mathrm {max}} =300 /450 GHz). Without silicon lens, it achieves 60° scan ranges in the EE -plane, an equivalent isotropic radiated power (EIRP) of 2.2 dBm, −2.8 dBm radiation power, 0.91% DC-THz efficiency, and the tuning range of 11.5% for the supply of 1.7 V. With silicon lens, it achieves the EIRP of 21.66 dBm, 0.56-dBm radiation power, 2.22% DC-THz efficiency, and tuning range of 10.8% for the supply of 1.6 V. Among the silicon-based beam-steerable radiators over 300 GHz, it achieves state-of-the-art dc-to-THz efficiency.

中文翻译：

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基于可调谐边界条件的高效太赫兹光束可操纵集成辐射器


在本文中，提出了一种基于可调谐边界条件的高效太赫兹（THz）光束可操纵集成辐射器。中央缝隙辐射器看到的边界条件通过切换缝隙进行调整，并且可以改变相应的辐射方向图。该技术使得波束可控太赫兹天线具有高辐射效率。此外，谐波压控振荡器（VCO）的DC-THz效率通过二维谐波升压技术得到提升。基于上述两种技术，太赫兹光束可操纵辐射器已在130 nm SiGe BiCMOS工艺（fT/fmax=300f_{T}/f_{\mathrm {max}} =300 /450 GHz）中实现。在没有硅透镜的情况下，它在EE平面上实现了60°扫描范围，等效各向同性辐射功率（EIRP）为2.2 dBm，-2.8 dBm辐射功率，DC-THz效率为0.91%，调谐范围为11.5%采用硅透镜，在 1.6 V 电源电压下，其 EIRP 为 21.66 dBm，辐射功率为 0.56 dBm，DC-THz 效率为 2.22%，调谐范围为 10.8%。它具有超过 300 GHz 的可操纵辐射器，实现了最先进的直流至太赫兹效率。