Multiphase filter based on FPGA (Field Programmable Gate Array) and design method thereof

The invention discloses a multiphase filter based on an FPGA (Field Programmable Gate Array) and a design method thereof. The multiphase filter comprises a filter coefficient loading module, a filtering convolution module and a filtering addition module which are arranged on the FPGA, the filter coefficient loading module is used for storing a filter coefficient and transmitting the filter coefficient to the filter convolution module in a system initialization stage, the filter convolution module is divided according to a multiphase structure and performs convolution operation on input data, and the filter addition module performs addition operation on a result of the filter convolution module according to a specified format to obtain a result; and obtaining a final output result of the multi-phase filter. The multiphase filter allows lossless real-time processing of high-sampling-rate and large-bandwidth signals at a lower sampling rate through a parallel processing mode, and has the advantages of full frequ