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A direct-conversion mixer with low flicker noise and low dc offset is presented for WLAN applications. The design consists of a folded-type active mixer with a resonant inductor in cascade with a source-driven passive mixer, operating at half the conventional LO frequency. Because of this unique topology, neither direct nor indirect flicker noise of the active mixer appears at the mixer output. Moreover,...
The next generation of wireless communication is a ubiquitous radio system concept, providing wireless access from short-range to wide-area, with one single reconfigurable and adaptive system for all envisaged radio environments. This paper presents the design approach of RCO (reconfigurable concurrent oscillator) that simultaneously generates two or more signals of different frequencies that eliminate...
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