Design of FIR filter based on FPGA

Abstract

The filter designed by the analog circuit has a big problem. It is extremely convenient to design the FIR filter in the FPGA. In the article we will introduce the whole process of the entire FIR filter from design, verification, simulation to implementation. This paper mainly explains the FIR filter principle and filter coefficient calculation, and simulates the linear filter with the sampling rate of 1Mhz, the passband is 120Khz, and the order is 15th order. Finally, the experimental verification is carried out through the FPGA board, and the corresponding The design of the required FIR filter.