The CS20-02A-436/3 from Pulsar Microwave is a Directional Coupler with Frequency 800 MHz to 2.2 GHz, Coupling 20 dB, Coupling Variation ±1.25 dB, Amplitude Flatness 0.75 dB, Directivity 23 dB. Tags: Module with Connectors. More details for CS20-02A-436/3 can be seen below.