The AS2140N325 from Anatech Electronics is a Band Stop Filter with Stopband Frequency 2.11 to 2.17 GHz, Bandwidth 60 MHz, Insertion Loss 1.5 to 2.5 dB, Rejection 30 dB, VSWR 1.50:1. Tags: Module with Connectors, Notch Filter. More details for AS2140N325 can be seen below.