The TLF-155-2S from Talent Microwave Inc is a Low Pass RF Filter with Frequency DC to 15.5 GHz, Insertion Loss 1 dB, Rejection 45 dB @19.6 to 22 GHz, Upper Rejection 45 dB, VSWR 2.00:1. Tags: Module with Connector, Microstrip, Suspended Substrate Filter. More details for TLF-155-2S can be seen below.