Design of Analog Linear Circuits, Fractional Order Systems and Bioimpedance Measurements Techniques

模拟线性电路、分数阶系统和生物阻抗测量技术的设计

• 批准号: RGPIN-2019-03911
• 负责人: Maundy, Brent
• 金额: $ 2.04万
• 依托单位: University of Calgary
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2022
• 资助国家: 加拿大
• 起止时间: 2022-01-01 至 2023-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=764670
• 关键词: Design; Analog; Linear; Circuits; Fractional

My research is in the design of analog linear circuits and fractional order systems, including bioimpedance measurement techniques. It is divided into two main areas aimed at: A) Continuing the design and development of new circuits capable of performing mathematical functions using analog circuits. Several of these functions include filtering, amplification, multiplication, oscillators, and general signal processing; B) Continuing the development and exploration of fractional order systems and bio-impedance measurement methods. The two areas are linked by the common thread of being processed in the analog domain with one being integer order and the other being fractional order. Bio-impedance measurement is often modeled using fractional systems, but is processed in the analog domain. Research area A: In the analog processing of signals is filter design which, in the last several years my colleagues, students, and I have made use of two port network concepts to generate novel single and fully differential active filters using the power of symbolic math. The flexibility of this method is relatively new and previously unknown filters have been designed, tested, and implemented in silicon and shown to work. Note: this work is not meant to replace conventional filter design using standard building blocks, but there is a need to formulate a circuit theoretic approach that systematically shows what types of single or fully differential filters that can be built around the simplest possible one or two-transistor core. The advantages to be gained are low power consumption, miniaturization, and simplicity of design. Research area B: In the area of fractional order systems, modelling, and bio-impedance measurement methods my research looks at the following subject areas: 1)Bioimpedance measurement techniques, 2)Design and implementation of portable impedance analyzers, 3)Use of fractional capacitors in filter structures and modelling of supercapacitors and, 4)Modelling of fruits and food characterization. In the subareas of bioimpedance measurement techniques and analysis, our research aims to develop new means and measurement of bioimpedance in general. Already we have developed low-cost monitoring devices using indirect measurement techniques that can be used for monitoring physiological changes in tissues, agriculture, and food characterization and a provisional patent has been granted to my group for a low cost bioimpedance analyzer. In the subarea of fractional (super)capacitors and their modelling this element has been used by our group to produce unusual asymmetric characteristics in filters not available through commercial capacitors. More recently, we have been working on advanced techniques to model supercapacitors and better predict their behavior under charging and discharging conditions.

我的研究是设计模拟线性电路和分数秩序系统，包括生物阻抗测量技术。它分为两个主要领域：a）继续使用模拟电路执行数学功能的新电路的设计和开发。其中几个功能包括过滤，扩增，乘法，振荡器和一般信号处理； b）继续开发和探索分数秩序系统和生物阻抗测量方法。这两个区域通过在模拟域中处理的共同线程链接，一个区域是整数顺序，另一个是分数顺序。生物阻抗测量通常是使用分数系统建模的，但在模拟域中进行处理。 研究区域A：在模拟过程中，信号是过滤器设计的，在过去的几年中，我的同事，学生和我使用了两个端口网络概念来利用符号数学的力量生成新颖的单个和完全差异的活动过滤器。该方法的灵活性相对较新，并且以前未知的过滤器已在硅中设计，测试和实现并显示出可行。注意：这项工作并不是要使用标准构建块替换传统的过滤器设计，但是有必要制定一种有系统地显示哪些类型的单一或完全差分过滤器的电路理论方法，这些滤镜可以围绕最简单的一或两种轨道核心构建。要获得的优点是低功耗，小型化和设计的简单性。 Research area B: In the area of​​ fractional order systems, modelling, and bio-impedance measurement methods my research looks at the following subject areas: 1)Bioimpedance measurement techniques, 2)Design and implementation of portable impedance analyzers, 3)Use of fractional capacitors in filter structures and modelling of supercapacitors and, 4)Modelling of fruits and food characterization.在生物阻抗测量技术和分析的亚地区，我们的研究旨在开发新的手段和测量生物阻抗。我们已经使用间接测量技术开发了低成本监测设备，这些技术可用于监测组织，农业和食品表征的生理变化，并且已授予我小组的临时专利，以提供低成本的生物浪费分析仪。在分数（超级）电容器及其建模的子区域中，我们组已使用该元素在无法通过商业电容器获得的过滤器中产生异常的不对称特征。最近，我们一直在研究高级技术，以建模超级电容器，并更好地预测其在充电和放电条件下的行为。