← 返回 JSSC 论文列表JSSC 2009第6期RF & Wireless0.12μm SiGe BiCMOS
A Spectral-Scanning Nuclear Magnetic Resonance Imaging (MRI) Transceiver
一款用于低磁场MRI诊断的集成化频谱扫描核磁共振成像收发器
0.12μm SiGe BiCMOS, 1 kHz-37MHz/250MHz(NMR), 0-0.9T(1H)
核磁共振成像收发器频谱扫描低磁场诊断集成化设计
▸支持1 kHz至37 MHz可调谐频率
▸适用于非均匀低磁场（<1 T）MRI应用
▸集成发射与接收功能于单一芯片
Abstract
An integrated spectral-scanning nuclear magnetic resonance imaging (MRI) transceiver is implemented in a 0.12 m SiGe BiCMOS process. The MRI transmitter and receiver circuitry is designed specifically for small-scale surface MRI diagnostics applications where creating low (below 1 T) and inhomogeneous magnetic field is more practical. The operation frequency for magnetic resonance detection and analysis is tunable from 1 kHz to 37 MHz, corresponding to 0–0.9 T magnetization for /49H (Hydrogen). The concurrent measurement bandwidth is approximately one frequency octave. The chip can also be used for conventional narrowband nuclear magnetic resonance (NMR) spectroscopy from 1 kHz up to 250 MHz. This integrated trans- ceiver consists of both the magnetic resonance transmitter which generates the required excitation pulses for the magnetic dipole excitation, and the receiver which recovers the responses of the dipoles.