Analytic design of constant delay switched-capacitor filters with amplitude selectivity

The paper gives an exposition of approximation techniques which may be used in the design of lossless discrete integrator (LDI) switched-capacitor ladder filters, with the phase response taken into consideration. Both lowpass and highpass LDI filters are treated. The paper completes the set of design techniques of this very useful class of switched-capacitor filters by allowing the filters to be designed on phase basis alone, or to possess simultaneous amplitude selectivity and passband phase linearity.