The Radio Booster is a high performance InGaP HBT MMIC amplifier utilizing a Darlington configuration with an active bias circuitry. The active bias circuitry provides stable current over temperature and process variations. The Radio Booster designed to run directly from a 5V microusb supply, does not require a dropping resistor as compared to typical Darlington amplifiers. The Radio Booster is a high linearity gain block for applications that require small in size with minimal number of external components. It is internally matched to 50 Ω at input and output.