The MRF21045L from NXP Semiconductors is a RF Transistor with Frequency 2110 to 2170 MHz, Gain 15 dB at 15 MHz, Power 45 W, P1dB 45 W, Supply Voltage 28 V. More details for MRF21045L can be seen below.
450 Watt, 50 Volt, 3.1 to 3.5 GHz, GaN RF IMFET
15 Watt, 50 Volt, DC to 4 GHz, GaN RF Transistor
15W, 300 MHz to 1.215 GHz, GaN RF Input-Matched Transistor
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