That is, {HEAD ~ the principles} of the present invention enable {TAIL ~ a circuit designer} to begin with a desired filtering circuit having the general configuration shown in FIG 1 , and convert that circuit into an improved, equivalent circuit having the configuration shown in FIG 2  
That is , { HEAD ~ the principles } of the present invention enable { TAIL ~ a circuit designer } to begin with a desired filtering circuit having the general configuration shown in FIG 1 , and convert that circuit into an improved , equivalent circuit having the configuration shown in FIG 2
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