To widen the tunable range of the single-passband microwave photon ic filter (MPF),a single-passband MPF with a wide tunable range is proposed,and it is based on a chirped phase-shifted fiber Bragg grating (PS-FBG).Firstly,the characteristics of the reflective sp ectrum of a common PS-FBG and the frequency response of the single-passband MPF based on the common PS-F BG are theoretically and experimentally studied.Then,a method of the transfer matrix is employed to analyze the effects of the value of the phase shift,the depth of the refractive index modulation and t he location of the phase shift of the chirped PS-FBG on the characteristics of the reflective spectrum a nd further on the frequency response of the single-passband MPF based on the chirped PS-FBG.The tunabilit y of the central frequency of the single-passband filter is achieved by tuning the central wavel ength of a tunable laser source. Compared with the common PS-FBG,the bandwidth of the reflective spectrum of th e chirped PS-FBG is increased so that the tunable range of the single-passband MPF is widened.Th e location of the notch in the reflective spectrum of the chirped PS-FBG is properly designed,which can ma ke the tunable range of the single-passband MPF become wider.