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This paper presents a low-power low-IF RF frontend for 2.4GHz wireless sensor networks (WSN) in 0.18μm RF CMOS technology. The RF frontend consists of a variable gain low noise amplifier (VG-LNA), a quadrature passive mixer and a divide-by-two circuit which generates the differential quadrature LO signals for quadrature balanced mixer. The effect of the input parasitic capacitance on the inductively...
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