Accurate Recursive Inverter Formula for the Correction of Phase Variation Effect on Bandpass Filters

In this paper, the novel inverter model is proposed to consider the phase variation of conventional inverter Furthermore, the recursive formula for the proposed inverter model is derived to solve the phase variation effect, which introduces the deviation of filter characteristics on bandpass filters. Simulated results for bandpass filter with various fractional bandwidths show the validity of the proposed inverter model and the recursive formula.