一种具有相位带自动跟踪和频率扫描功能的便携式相位域磁感应层析成像收发器。

A Portable Phase-Domain Magnetic Induction Tomography Transceiver with Phase-Band Auto-Tracking and Frequency-Sweep Capabilities.

机构信息

School of Electrical and Computer Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea.

School of Mechanical, Aerospace and Nuclear Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Korea.

出版信息

Sensors (Basel). 2018 Nov 7;18(11):3816. doi: 10.3390/s18113816.

DOI:10.3390/s18113816

PMID:30405069

原文链接:https://pmc.ncbi.nlm.nih.gov/articles/PMC6263522/

Abstract

This paper presents a portable magnetic induction tomography (MIT) transceiver integrated circuit to miniaturize conventional equipment-based MIT systems. The miniaturized MIT function is enabled through single-chip transceiver implementation. The proposed MIT transceiver utilizes a phase-locked loop (PLL) for frequency sweeping and a phase-domain sigma⁻delta modulator with phase-band auto-tracking for a full-range fine-phase resolution. The designed transceiver is fabricated and verified to achieve the measured signal to noise and distortion ratio (SNDR) of 101.7 dB. Its system-level prototype including in-house magnetic sensor coils is manufactured and functionally verified for four different material types.

摘要

本文提出了一种便携式磁感应断层成像（MIT）收发集成电路，用于使传统基于设备的 MIT 系统小型化。通过单芯片收发器的实现，实现了小型化的 MIT 功能。所提出的 MIT 收发器利用锁相环（PLL）进行频率扫描，以及具有相位带自动跟踪的相位域 sigma-δ 调制器实现全范围精细相位分辨率。所设计的收发器已被制造和验证，可实现 101.7dB 的测量信号噪声和失真比（SNDR）。其包括内部磁传感器线圈的系统级原型已被制造并针对四种不同的材料类型进行了功能验证。