非等波纹低通滤波器的迭代设计

Nonequirippleapproximationoffiltercharacteristicscanberealizedeitheroddorderoreven orderinthesymmetricloadcase.Thispaperpresentsamethodofsynthesizingnon-equiripplelow-pass filterbasedoniterationanalysis,inwhichtherationalfractionformedofChebyshevpolynomialisused asthefiltercharacteristicfunction.Thismethodisconvenientforcomputerprog ramming,becausethe attenuationzerosandpolesofthefiltercanbedeterminedeasilyandthesynthesisprocedureissimple, too.Thegivenexamplesshowthatthemethodisofapracticalvalueinfilterdesign ramming,becausethe attenuationzerosandpolesofthefiltercanbedeterminedeasilyandthesynthesisprocedureissimple, too.Thegivenexamplesshowthatthemethodisofapracticalvalueinfilterdesign