Progress on the FPGA based phase measurement system

Our research paper A high precision phase measurement system implemented in FPGA with phase interpolator has been published on the journal of Review of Scientific Instruments. The link is 10.1063/5.0078340.

In this work, the phase interpolator in Xilinx transceiver is used to generate a slight frequency difference for the DDMTD. The accuracy is guarrantted partly by the high quality integrated dedicated PLL inside the transceiver. An averaging measurement method is used to improve the linearity. Results are reported in this paper.

In 2024, this new method and system has been authorize a patent of invention in China.

我们的研究工作在 Review of Scientific Instruments 发表。该论文介绍了基于Xilinx FPGA高速收发器内部相位内插模块产生微小频率差从而实现DDMTD的方法。收发器内部高质量的PLL能有效提升系统测量精度。此外，本文提出了一种通过可控平均测量来消除内插模块的非线性的方法。

基于该新方法及系统设计的中国发明专利已经在2024年得到授权。