便携式磁共振多源射频脉冲发生器设计

刘颖, 袁斌华, 章浩伟

Design of a Portable Magnetic Resonance Multi-source RF Pulse Generator

LIU Ying, YUAN Binhua, ZHANG Haowei

图8 (a)频率为63.87 MHz，峰峰值为401 mV的射频脉冲信号；(b)频率为63.87 MHz，峰峰值为205 mV的射频脉冲信号；(c) 4通道快速频率调制，从1 MHz快速调制到2 MHz；(d) 4通道快速相位调制，从相位0快速调制到相位π；(e)频率为63.88 MHz，峰峰值为206 mV的双通道射频硬脉冲波形；(f)频率为63.88 MHz，峰峰值为206 mV的双通道5-Sinc射频软脉冲波形

Fig. 8 (a) RF pulse waveform at 63.87 MHz with 401 mV peak-to-peak; (b) RF pulse waveform at 63.87 MHz with 205 mV peak-to-peak; (c) 4-channel fast frequency modulation from 1 MHz to 2 MHz; (d) 4-channel fast phase modulation from phase 0 to phase π; (e) Dual-channel RF hard pulse waveform at 63.88 MHz with 206 mV peak-to-peak; (f) Dual-channel 5-Sinc RF soft pulse at 63.88 MHz with 206 mV peak-to-peak waveforms