The GRF4100 from Guerrilla RF is a RF Amplifier with Frequency 100 MHz to 3.8 GHz, Gain 16.5 dB, Noise Figure 3.4 dB, Output Power 22.5 dBm, Output Power 0.18 W. Tags: Surface Mount, Gain Block, Driver Amplifier. More details for GRF4100 can be seen below.