In a previous paper,[1] the properties of high-

resistance-capacitance (R-C) ladder structures having lowpass and highpass configurations were discussed. In this correspondence, bandpass and band-elimination structures are considered. These R-C structures are also expected to fulfill the following two conditions: 1) the factor

,(where

is the phase shift between the input and the output, and

is the frequency at which

180°) shall be a maximum possible; and 2) the open-circuit input impedance and the short-circuit output admittance shall be simultaneously maximized.