Design of a LTCC Low Pass Filter

In this paper, the main work is focused on the design, simulation and fabrication of 2012-type low pass filter(LPF) using the technology of low temperature co-fired ceramic(LTCC). The three-order and -type LPF with 130MHz cut-off frequency and 260MHz out-band rejection is successfully implemented using two kinds of green tape with relative permittivity of 14 and relative permeability of 60 respectively. The measured results agree well with the simulated data and the design process is proved to be effective and reasonable.