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In this paper, a quad-band, multi-standard, concurrent, low noise amplifier operating in the 0.9/1.8/2.45/3.5 GHz bands is presented. The amplifier design is based on an ultra low noise PHEMT transistor connected in the common source topology with inductive degeneration. The input matching network is based on a three-section, dual-band transformer. A feedback capacitor is inserted between the gate...
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