中图分类号： TN911.3
文献标识码： A
DOI：10.16157/j.issn.0258-7998.201039
中文引用格式： 王仁智，孔雅，张春泽. 一种支持任意码率的高斯低通滤波器设计[J].电子技术应用，2021，47(7)：61-63，68.
英文引用格式： Wang Renzhi，Kong Ya，Zhang Chunze. Design of a Gaussian low pass filter with arbitrary bit rate[J]. Application of Electronic Technique，2021，47(7)：61-63，68.

Design of a Gaussian low pass filter with arbitrary bit rate

Abstract： GMSK(Gaussian filtered minimum shift keying) modulation technology has high spectrum modulation efficiency, which is suitable for aerospace high bit rate telemetry. Gaussian low pass filter is the key unit of GMSK modulation technology. The design principle of Gaussian low pass filter was introduced, a Gaussian low-pass filter with arbitrary bit rate and low resource consumption was implemented in Xilinx FPGA, with LUT look-up table method and XOR operation used. Arbitrary rate switching function was achieved without using DSP48E1s resources and less LUT resources through the simulation and implementation results.

Key words : FPGA；GMSK；low pass filter；telemetry