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A direct up-conversion mixer from 1MHz to 2.4GHz implemented by TSMC 0.18mum 1P6M CMOS process is demonstrated. In this design, the combination of the concepts of "active dual-gate mixer" and "passive FET mixer" is used to achieve mixing effect. With the "folded" structure, this mixer can operate at low voltage (1V) normally. As the results show, the conversion gain is...
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