The CHA6251-QKB from United Monolithic Semiconductors is a 3-Stage GaN power amplifier MMIC that operates from 17 to 21.5 GHz. It delivers an output power of 37 dBm (~5 W) with a gain of more than 30 dB and a power-added efficiency (PAE) of 42%. This amplifier is manufactured using a GaN-on-SiC HEMT process. It requires a DC supply of 14 V and consumes 125 mA of current. This RoHS-compliant amplifier is available in a 24-lead QFN package that measures 4 x 4 mm and it is ideal for space and other wide range of microwave applications.
