The CHA2159-99F from United Monolithic Semiconductors is a RF Amplifier with Frequency 55 to 65 GHz, Small Signal Gain 18 to 20 dB pk-pk, Gain Flatness ±1 dB, Noise Figure 4 to 4.8 dB, Output Power 13 to 14 dBm. Tags: Low Noise Amplifier. More details for CHA2159-99F can be seen below.