The effect of glass addition on sintering temperature and microwave dielectric properties of Cu2ZnNb2O8 (CZN) is investigated for possible low temperature co-fired ceramic (LTCC) application. The CZN ceramic was prepared by the solid-state ceramic route. The phase formation, microstructure and elemental composition of the ceramics were studied using X-Ray Diffraction, Scanning Electron Microscopy, Transmission Electron Microscopy and Energy Dispersive Analysis. The CZN sintered at 975 degrees C/4 h has epsilon(r) = 15.2, tan delta = 0.0007 (at 5.1 GHz) and tau(f) of -98 ppm degrees C-1 and CTE = 1.9 ppm degrees C-1. The addition of LBS and LMZBS glasses lowered the sintering temperature of CZN to below the melting point of silver. The 1 wt% LBS added CZN sintered at 935 degrees C/4 h had. epsilon(r) = 14.7, tan delta = 0.001 (at 5.1 GHz), tau(f) = -19 ppm degrees C-1 and CTE = -0.6 ppm degrees C-1. The addition of 0.7 wt% LMZBS to CZN and sintered at 935 degrees C/4 h had epsilon(r) = 14.8, tan delta = 0.002 (at 5.1 GHz), tau(f) = -39 ppm degrees C-1 and CTE = -0.9 ppm degrees C-1. (C) 2012 Elsevier B.V. All rights reserved.