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

Sensors

ChanSam Park¹  Byungjoo Oh¹  Kyeonghwan Park¹  JaeJoon Kim¹  HeeYoung Chae¹  Hungsun Son²  Jiyun Jeon² 

[1] 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;

关键词: magnetic induction tomography;    phase-domain sigma–delta modulator;    phase-locked loop;    transceiver integrated circuit;    phase-band auto-tracking;   

DOI  :  10.3390/s18113816

来源: DOAJ

【 摘 要 】

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.

【 授权许可】

Unknown