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A direct-conversion transmitter is developed at 6 GHz in 0.18 μm CMOS. In order to realize high efficiency quadrature generation as well as bring low deterioration to the overall phase noise, the bulk-coupled technique is adopted into a Class-C type VCO. The image rejection mixer adopts a three-stage poly-phase filter and a pair of Gilbert double-balanced mixer with current bleeding for conversion...
This letter presents a 60 GHz wideband differential driving amplifier based on multi-section coupled lines (MSCL) matching network for the first time. The impedance transforming of the proposed two-port matching network is realized in a single structure. It is suitable for millimeter wave CMOS integrated circuit design since the proposed matching network eliminates the self-resonant and defected-ground...
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