The PS2122A from Synergy Microwave Corporation is a Analog Phase Shifter with Frequency 2.1 to 2.4 GHz, Phase Shift 90 Degree, Insertion Loss 2.1 to 2.4 dB, Control Voltage 0 to 5 V, Operating Temperature -40 to 85 Degree C. Tags: Surface Mount. More details for PS2122A can be seen below.