A 4×4 607GHz Harmonic Injection-Locked Receiver Array Achieving 4.4pW/√Hz NEP in 28nm CMOS is beneficial for THz applications as they typically have limited available illumination power.

📋 论文概要

本文设计了一个工作在607GHz的4×4谐波注入锁定接收器阵列，采用28nm CMOS工艺，实现了4.4pW/√Hz的噪声等效功率（NEP），适用于太赫兹成像与传感应用。

💡 主要创新点

• 采用谐波注入锁定技术实现607GHz高频接收，降低本振频率要求
• 4×4阵列结构实现波束扫描与角度分辨率提升
• 低功耗低噪声设计达到极低NEP性能

🏷 关键词

📄 原文摘要

As illustrated in Fig. 18.4.4, the angular resolution of the optical setup depends on two properties: the pixel-beam-separation (PBS) angle φPBS and the half-power beamwidth (HPBW) θHPWB. For the optical setup in Fig. 18.4.1, used for all imaging experiments in this work, φPBS can be calculated from the pixel pitch of 200µm and the silicon lens’ extension length of 4.4mm (including die thickness) and is equal to 2.6°. The angular field-of-view (FoV), which is the separation between the outermost beams, is 11°. The HPBW, on the other hand, is dependent on the directivity. Measurements using both the 12mm and the 20mm lenses, combined with the 12mm lens’ simulated directivity of 22.5dB, result in an estimated directivity of 36.1dB for the 20mm lens, which corresponds to an HPBW of 2.8°. With this optical setup, the object will thus be only slightly oversampled, and the effective angular resolution is 2.8°.

👥 作者与机构

Ariane De Vroede, Patrick Reynaert