The DC1602001800GH from Sainty-Tech Communications Limited is a Directional Coupler with Frequency 2 to 18 GHz, Coupling 16 dB, Coupling Variation ±0.3 to ±0.5 dB (Accuracy), Frequency Sensitivity ±0.7 to ±1.0 dB, Directivity 15 to 17 dB. Tags: Module with Connectors. More details for DC1602001800GH can be seen below.