Journal of the Korean Institute of Telematics and Electronics (대한전자공학회논문지)

The Institute of Electronics and Information Engineers (대한전자공학회)
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A Study on the Elimination of Integrator in DM Filters

DM 필터에서의 적분기제거에 관한 연구

  • Shin, Jae Ho (Dept. of Elec. Eng., Myong Ji Univ.) ;
  • Lee, Chong Kak (Dept. of Elec. Eng., Seoul National Univ.)
  • 신재호 (명지대학교 전자공학과) ;
  • 이종각 (서울대학교 전자공학과)
  • Published : 1986.03.01
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Abstract

To eliminate the requirement of multiplications in nonrecursive filter realization, the use of a delta modulation(DM) has been studied by several researchers. However, the structure of DM filters inevitably contains an intergrator that is cascaded with the arithmetic unit to operate convolution summation. In this paper we porpose a method to determine the coefficients that may be used for implementation of a DM filter without an integrator. Also, we obtain the condition by which one can exclude the response errors due to the elimination of the integrator. By computer simulations it is shown that the performance of the proposed filter is very good, providing that the condition is satisfied.

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