The BZ-17702120-131340-101315 from B&Z Technology is a RF Amplifier with Frequency 17.7 to 21.2 GHz, Gain 40 to 42 dB, Gain Flatness ±1 dB, Noise Figure 1.1 to 1.3 dB, Output Power 13 to 15 dBm. Tags: Low Noise Amplifier. More details for BZ-17702120-131340-101315 can be seen below.