Cascade Integrator Comb(CIC) filter is the main part of the next generation High Frequency (HF) radar. This paper describes the key points of CIC theory in the Digital Down Conversion (DDC) module of a radar receiver,...Cascade Integrator Comb(CIC) filter is the main part of the next generation High Frequency (HF) radar. This paper describes the key points of CIC theory in the Digital Down Conversion (DDC) module of a radar receiver, and takes advantage of the high flexibility and high density feature of Field Programmable Gate Array (FPGA) for putting forth to design the CIC filter by using FPGA. This paper provides particular insight into design by FPGA, which has advantages in high speed operation and simply structure. Some important and practical applications are given in this paper. The simulation result proves the validity and veracity. Because we can adjust the parameters freely according to our need, the CIC filter can be adapted to the next generation HF radar. Key words FPGA - DDC - CIC filter - HF radar CLC number TN 47 Foundation item: Supported by the 863 High Technology Project of China(2001AA631050)Biography: MA Zhi-gang(1978-), male, Ph. D candidate, research direction: software radio and EDA design.展开更多
文摘Cascade Integrator Comb(CIC) filter is the main part of the next generation High Frequency (HF) radar. This paper describes the key points of CIC theory in the Digital Down Conversion (DDC) module of a radar receiver, and takes advantage of the high flexibility and high density feature of Field Programmable Gate Array (FPGA) for putting forth to design the CIC filter by using FPGA. This paper provides particular insight into design by FPGA, which has advantages in high speed operation and simply structure. Some important and practical applications are given in this paper. The simulation result proves the validity and veracity. Because we can adjust the parameters freely according to our need, the CIC filter can be adapted to the next generation HF radar. Key words FPGA - DDC - CIC filter - HF radar CLC number TN 47 Foundation item: Supported by the 863 High Technology Project of China(2001AA631050)Biography: MA Zhi-gang(1978-), male, Ph. D candidate, research direction: software radio and EDA design.
