Fold Structure Based on the Design of Half-Band Filter
Lin Qi Wei · Dianzi qijian · 2010
Half-band filter is a highly efficient digital filter,a currently popular method of half-band filter design parameters was generally able to meet the requirements,but there is a high power consumption,size large,resource-consuming expense of higher deficiencies.To compensate for these shortcomings,this paper proposes a new technique based on the folded half-band filter design methods.First,the design requirements in accordance with MATLAB to produce the filter coefficients,using CSD coefficients to optimize the code right,and then folding structure,achieved through code.The design process is also used in time-multiplexed and re-timing technology.Compared with other half-band filter design,this design requires a small amount of resources for comsumption,and has an entire extraction and filtering process,which never use multipliers to the coefficient arising.It has also a lower delay time and single-clock control of a high stability,low power consumption and facilitated size.