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本文提出了一种4×4分布式多层振荡器网络，用于谐波注入和太赫兹波束成形。该网络通过空间功率合成解决了单个太赫兹源输出功率不足的问题，与传统的中央LO分布方案相比，降低了功耗并改善了PVT变化下的相位匹配。
applications in communication, sensing, imaging, and spectroscopy [1]. However, due to the limited power-generation capability of a single source above the device fmax [2], efficient spatial power combining from multiple coherent sources becomes necessary to generate mW level of power. To create this 2D array of distributed frequency and phase-locked sources, prior works have shown central LO-signal distribution with local harmonic upconversion [3]. However, this requires high power consumption in the LO distribution. In addition, phasematching with PVT variations across the sources at the harmonic-radiating THz frequency can be quite challenging. A small ∆θ perturbation at the fundamental frequency translates to N∆θ at the radiated Nth harmonic, thus corrupting the array
Hooman Saeidi, Suresh Venkatesh, Chandrakanth Reddy Chappidi,
Tushar Sharma, Chengjie Zhu, Kaushik Sengupta Princeton University, Princeton, NJ Integrated high-power THz arrays with beamforming ability can enable new