17.10 A 318-to-370GHz standing-wave 2D phased array in 0.13µm BiCMOS

Hossein Jalili, O. Momeni
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引用次数: 23

Abstract

Fully integrated implementation of mm-wave/THz radiators and phased arrays presents new potentials for applications like spectroscopy, imaging, and high data-rate communication. These applications demand sufficient radiated power, wide frequency range, and variable phase shifting between sources to perform beam steering. Limited power generation capability of transistors close to the maximum oscillation frequency (fmax) of available silicon processes in addition to the poor quality factor of varactors makes realizing these requirements particularly challenging. Harmonic oscillators are often coupled together in arrays to boost the output power and steer the radiation beam [1–6]. The coupling elements along with varactors used for frequency tuning add loss and parasitics to the circuit and significantly reduce the output power, operation frequency, and tuning range at mm-wave/THz frequencies. In this work, we implemented a standing-wave (SW) structure that overcomes these challenges to achieve broadband frequency tuning, wide beam steering and high power radiation at the same time.
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17.10基于0.13µm BiCMOS的318 ~ 370ghz驻波二维相控阵
毫米波/太赫兹辐射器和相控阵的完全集成实现为光谱学、成像和高数据速率通信等应用提供了新的潜力。这些应用需要足够的辐射功率、宽的频率范围和源之间可变的相移来执行波束控制。晶体管的发电能力有限,接近可用硅工艺的最大振荡频率(fmax),再加上变阻器的质量因素较差,使得实现这些要求特别具有挑战性。谐波振荡器通常在阵列中耦合在一起,以提高输出功率并引导辐射束[1-6]。耦合元件和用于频率调谐的变容管增加了电路的损耗和寄生,并显著降低了输出功率、工作频率和毫米波/太赫兹频率下的调谐范围。在这项工作中,我们实现了一种驻波(SW)结构,克服了这些挑战,同时实现了宽带频率调谐、宽波束转向和高功率辐射。
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