A Low-Noise CMOS Receiver Frontend for MRI

被引：11

作者：

Anders, Jens ^{[1
]}

Boero, Giovanni ^{[1
]}

机构：

[1] Ecole Polytech Fed Lausanne, Lausanne, Switzerland

来源：

2008 IEEE BIOMEDICAL CIRCUITS AND SYSTEMS CONFERENCE - INTELLIGENT BIOMEDICAL SYSTEMS (BIOCAS) | 2008年

关键词：

D O I：

10.1109/BIOCAS.2008.4696900

中图分类号：

TP18 [人工智能理论];

学科分类号：

081104 ; 0812 ; 0835 ; 1405 ;

摘要：

In this paper a novel architecture for an integrated receiver front-end for micro magnetic resonance imaging (micro-MRI) applications is described. While the chip consumes only 9mA supply current (4mA in the LNA and 5mA in the output buffer) from a 33V power supply, it has a measured input referred noise density of only 0.6 nV/root Hz. The receiver consists of a reception coil, an on-chip tuning capacitor, a low-noise amplifier, and a 50 Omega output buffer. The system is designed for operation in a B(0)-field of 7 Gamma corresponding to a frequency of 300MHz. It is implemented in a 0.35 mu m CMOS high-voltage process and occupies a chip area of 850 mu m x 500 mu m.

引用

页码：165 / 168

页数：4

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