The AKF-1938 is a 3.78 to 3.88 GHz BAW RF filter designed for use in radar and RF transceiver applications. It provides a low insertion loss covering 100 MHz of bandwidth with a high rejection of 35 to 55 dB. The filter is available in an ultra-small module that measures 2 x 2.5 x 0.9 mm and operates over a temperature range from -40 C to +105 C.