通用硬件脉冲序列发生器的研制

Hardware Design for a General-purpose Pulse Generator Used in NMR Spectrometers

为了满足任意核磁共振脉冲序列的需要,提高脉冲序列发生器的性能和稳定性,本文提出了一种基于现场可编程逻辑器件(FPGA)和大容量高位宽静态存储器(SRAM)的硬件脉冲序列发生器,详细讨论了这种设计方案的特点,并通过一系列实验验证了其性能和可行性.

In this paper, we present the hardware design for a general-purpose pulse generator used in NMR spectrometers. The architecture of the pulse generator was significantly simplified by using a field programmable gate array (FPGA) and a synchronous static ram. This design guaranteed the flexibility and easy-to-upgrade feature of the pulse generator. Compared to the conventional designs, the new design allowed finer pulse width and faster switching time. The performance of the new pulse generator was evaluated by NMR experiments.