WIDEBAND_500_kHz_1_GHz_HYBRID_AMPLIFIER

Published:2009/7/7 7:57:00 Author:May | From:SeekIC

The amplifier's input stageis a dual-gate GaAs FET, which provides low mput capacitance and hightransconductance. The dual-gate structure accepts the signal on mput 1. Input 2 controls the gain of theamplifier. The amplifier has a third input for use h senes feedback. The output feeds back to pm 3 via asingle resistor, which controls the overall power galn of the ampllfter. At 10 MHz, the output is capable ofdelivering 12 dBm into a 50-Ω load with 1 dB of signal compression. The accoupled amplifier has a gam of 37 dB at 100 MHz and 3 dB at 1 GHz.



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