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本文提出了一种215GHz的8×8辐射器-振荡器阵列，采用基于分布式耦合的多功能网络实现鲁棒耦合，在宽频率范围内实现亚纳秒同步，并利用高方向性喇叭天线封装和玻璃超表面提高EIRP和辐射效率。该阵列实现了25.5dBm的平均EIRP和12.9%的连续频率调谐范围，为太赫兹传感与成像提供了高功率、宽带宽的解决方案。
Abstract A 215GHz 8×8 radiator-oscillator array with robust coupling achieving 25.5dBm average EIRP over a 12.9% continuous frequency tuning range. The proposed coupling scheme, based on distributed coupling through multi-functional networks, achieves robust 2D- scalable coupling over a wide frequency range with sub-nanosecond synchronization. A high-directivity horn-antenna radiation package with a glass superstrate is proposed to achieve a high EIRP and radiation efficiency. THz waves are key enablers for novel sensing and imaging solutions for which wide bandwidth, high power, and low phase-noise are required. However, low-cost silicon-based THz radiators fall short of delivering the needed performance due to the limited fT/fMAX of transistors and the low Q-factor of passives. In addition, the weak non-linearity of CMOS FETs leads to low power generation in harmonic radiators. Coupled-oscillator arrays are
Ahmed Elmenshawi1, Sriram Muralidharan2, Mona M. Hella1
Rensselaer Polytechnic Institute, Troy, NY, 2Oso Semiconductor, Berkeley, CA