Gigahertz-bandwidth lock-in detector for high-speed interferometry and sensing applications

适用于高速干涉测量和传感应用的千兆赫带宽锁定探测器

• 批准号: 500836-2016
• 负责人: Sankey, Jack
• 金额: $ 1.82万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Engage Grants Program
• 财政年份: 2016
• 资助国家: 加拿大
• 起止时间: 2016-01-01 至 2017-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=608323
• 关键词: Gigahertz; bandwidth; lock; detector; speed

Many research environments exploit "lock-in" detection techniques to reduce noise (and data size) by removing unwanted spectral components from a signal of interest. We wish to use lock-in detection to interferometrically characterize the GHz-frequency mechanical modes of our micromechanical sensors, but there currently does not exist a commercially available lock-in detector for this range of frequencies. The state-of-the-art digital lock-in (Zurich Instruments UHFLI), which can measure signals at frequencies up to 600 MHz, costs more than $40,000 CAD (higher with options).

许多研究环境利用“锁定”检测技术，通过从感兴趣的信号中去除不需要的频谱分量来减少噪声（和数据大小）。我们希望使用锁定检测来干涉表征我们的微机械传感器的 GHz 频率机械模式，但目前不存在适用于此频率范围的商用锁定检测器。最先进的数字锁定 (Zurich Instruments UHFLI) 可以测量频率高达 600 MHz 的信号，成本超过 40,000 加元（选件价格更高）。