The CPL-1020-20 from Taylor Microwave, Inc. is a Directional Coupler with Frequency 1 to 2 GHz, Coupling 20 ± 1.25 dB, Coupling Variation ±1.25 dB, Frequency Sensitivity ± 0.60 dB, Directivity 20 dB. Tags: Module with Connectors. More details for CPL-1020-20 can be seen below.