Front End Module
FEM is a multi-function module that allows frequency selection and swicthing signals thereby replaces the previously required diplexer, RF Switch, Low pass filter and SAW filter components for both of (900 MHz) EGSM and (1.8 GHz) DCS-1800 Frequency Band. FEM measures 8.4 mm × 5.0 mm × 1.9 mm.
With the trend of miniaturization of portable phones increasing, demand for the new FEM is on the rise as well. In developing the new component, Samsung used a 0.8 mm low temperature co-fried ceramic substrate (LTCC) in a design consisting of 13 layers and incorporating two SAW filters for minimum resistance in high frequency applications.