An SSB signal generator performing phase shifting, used in SSB communications, is composed of an analytic signal converter, a complex coefficient filter, and a carrier frequency multiplier. For higher density integration and lower energy consumption, a narrow-band bandpass filter having an analytic signal outputting pair having a dual function of an analytic signal converter and a complex coefficient filter has been proposed. However, only basic schemes for such a filter have been presented, and its effects on the circuit configuration, element sensitivity, and image rejection ratio of approximate errors, which are problems associated with its implementation, have not been studied. In this paper, a method for constructing a narrow-band bandpass filter having an analytic signal outputting pair based on the design of a complex coefficient analog filter is presented, and effects of the amplitude and phase errors of two signals on the image rejection ratio of phase errors, the element sensitivity, and the group delay characteristics are discussed. Simulation and experimental results are presented to show the validity of the circuit construction scheme proposed. © 1999 Scripta Technica, Electron Comm Jpn Pt 3, 83(4): 52–61, 2000