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A wide-band variable-gain LNA, RF VGA and a mixer implemented in 50 GHz 0.5 ??m SiGe BiCMOS technology for DVB-H tuner front-end is presented. The LNA uses the distribution structure with a fixed gain stage to get 20 dB variable gain and low noise. The LNA achieves 600 MHz bandwidth with less than 6 dB noise figure and +3-dBm of IIP3 at max gain. The RF VGA is carefully designed to get 30 dB variable...
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