The structure and microstructure of the (1 - x)Li2.08TiO3 + xLiF (0.11 <= x <= 0.14) ceramics were studied by X-ray powder diffraction (XRD), thermal dilatometry and scanning electron microscopy (SEM). The microwave dielectric properties of the ceramics were studied with a network analyzer. All samples exhibited single monoclinic phase. The sintering temperature was successfully reduced to about 900 C/ 2 h for the LiF-doped Li2.08TiO3 specimens. The dielectric permittivity slightly decreased, whereas the Q x f value changed little, with the increase in LiF dopant. The temperature coefficient of resonant of frequency (If) value changed from positive to negative with increasing x, and a near zero value was obtained at x = 0.13 composition. Optimized microwave dielectric properties with epsilon(r) = similar to 22.8, Q x f = similar to 63,000 Gliz and tau(f) = similar to 1.0 ppm/C for x = 0.13 composition sintered at 900 C/2 h. The XRD and back scattering SEM analysis showed that the ceramic was compatible with Ag powders after sintering at 900 C/2 h. (C) 2013 Elsevier Ltd. All rights reserved.