Current-conveyor-based wide-band current driver for electrical impedance tomography
Current-conveyor-based wide-band current driver for electrical impedance tomography
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DOI：
10.1088/1361-6579/ab0c3c
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发表时间：
2019-03-01
影响因子：
3.2
通讯作者：
Odame, K. M.
中科院分区：
文献类型：
--
作者：
Rao, A. J.;Murphy, E. K.;Odame, K. M.
目的：介绍一种用于电阻抗断层成像（EIT）的宽带集成电流驱动器。该应用程序主要用于前列腺癌和乳腺癌检测，这需要在高达10 MHz的频率下对组织进行询问，同时实现低谐波失真和高精度。方法：电流驱动器基于电流传送带架构，可以在100hz - 10mhz的频率范围内提供1.2 mA的峰值交流电流。采用CMOS 0.18 μ m工艺制造，电源电压3.3 V，核心面积0.26 mm(2)。主要结果：在峰值电流为1.2 mA时，测量到的谐波失真为
Objective: In this paper a wide-band integrated current driver for electrical impedance tomography (EIT) is presented. The application is primarily for prostate and breast cancer detection which require the tissue to be interrogated at frequencies up to 10 MHz while achieving low harmonic distortion and high accuracy. Approach: The current driver is based on current conveyor architecture and can deliver 1.2 mA of peak to peak ac current between frequencies of 100 Hz-10 MHz. It is fabricated in CMOS 0.18 mu m technology with a power supply of 3.3 V, and occupies a core area of 0.26 mm(2). Main results: The measured harmonic distortion for a peak current of 1.2 mA is