The CD0.5-2-20-30 from Analog Microwave Design is a Directional Coupler with Frequency 500 MHz to 2 GHz, Coupling 20 dB, Directivity 23 dB, Average Power 30 W, Peak Power 250 W. Tags: Module with Connectors. More details for CD0.5-2-20-30 can be seen below.