The MACP-011118 from MACOM is a Directional Coupler with Frequency 5 to 1800 MHz, Coupling 16.8 to 18.2 dB, Insertion Loss 0.4 to 1.4 dB, Isolation 21 to 37 dB, Return Loss 15 to 27 dB. Tags: Surface Mount. More details for MACP-011118 can be seen below.